1st Semester Review-Plummer

Match

Match the following

• Group 18

• Group 1

• Group 2

• Groups 3-12

• Group 17

Noble Gases

Alkali Metals

Alkaline Earth Metals

Transition metals

Halogens

• Noble Gases

• Alkali Metals

• Alkaline Earth Metals

• Transition metals

• Halogens

Match

Match the following

• Elements

• Molecules

• Compounds

• Mixture

Contain only one type of atom

at least 2 atoms combined together

At least 2 DIFFERENT atoms combined together

2 or more substances that are NOT chemically combined

• Contain only one type of atom

• at least 2 atoms combined together

• At least 2 DIFFERENT atoms combined together

• 2 or more substances that are NOT chemically combined

Multiple Choice

This periodic table shows elements 1 and 2 if element 1 has an atomic number of 19 what is the atomic number of element 2 ?

• 20

• 28

• 30

• 34

Match

Match the following

• Located in the nucleus; have a positive charge; and a mass of 1 amu

• Located outside of the nucleus; have a negative charge; and a mass of 1/2000th of an amu

• located in the nucleus; have no charge; and no charge

Protons

electrons

neutrons

• Protons

• electrons

• neutrons

Multiple Choice

Which of the following is a compound

• water

• hydrogen

• nitrogen gas

• oxygen

Multiple Choice

Which of the following is a compound and a molecule

• $$O_2$$  

• $$H_2$$  

• Ca

• CH

Multiple Choice

elements are placed in the periodic table based on the number of

• neutrons

• electrons

• protons

• protons + neutrons

Reorder

Put the following in order

• reactants

• --> (yields)

• products

1

2

3

• 1
• 2
• 3

Multiple Choice

The number of atoms of each element must be equal on both sides of a reaction.

• True

• False

Multiple Choice

Methane + $$2O_2$$   --> $$CO_{2\ }$$  + $$2H_2O$$   

what is the chemical formula for methane based on this equation? (hint: remember that the number of atoms of each elements has to match on both sides)

• $$C_2H_4$$  

• $$CH_4$$  

• $$CH_4O$$  

• $$CH_2$$  

Multiple Choice

which of the following is not an example of a chemical change?

• Burning wood

• sawing wood

• baking a cake

• digesting food

Multiple Choice

which of the following is not an example of a physical change?

• Mixing and pouring concrete

• Melting ice

• burning wood

• tearing paper

Match

Match the following

• Periods

• Groups

• Families

Horizontal rows on the periodic table

vertical columns on the periodic table

The specific names for the group of elements within a vertical column on the periodic table

• Horizontal rows on the periodic table

• vertical columns on the periodic table

• The specific names for the group of elements within a vertical column on the periodic table

Multiple Choice

The following image represents

• Einstein Model

• Bohr's Model

• Roy's Model

• The Model

Multiple Choice

Elements are organized on the

• periodic table

• element table

• hypothesis

• experiment table

Multiple Choice

As we go from left to right on the periodic table - elements tend to become more __.

• +

• o/neutral

• +/-

• -

Multiple Choice

All of the following are an example of a subatomic particle except

• valence

• proton

• neutron

• electron

Multiple Choice

As we go from right to left on the periodic table electronegativity decreases

• true

• false

Multiple Choice

When people make inferences they are not using their senses such as: (smell/taste/hearing).

• true

• false

Multiple Choice

These elements are described as: shiny and great conductors of heat + electricity

• metalloid

• non metals

• metals

• halogens

Multiple Choice

The following are also called semiconductors.

• metalloids

• halogens

• metal

• non metal

Multiple Choice

Groups on the periodic table go from left to right and are organized by the number of electrons that are in the outside shell

• false

• true

Multiple Choice

Matter is made of elements, elements are made of ____s the smallest and are subatomic.

• matter

• elements

• protons

• atoms

Multiple Choice

Protons and ___ take up the atomic mass

• neutrons

• electrons

• valence

• variation

Multiple Choice

What is located in the nucleus of an atom?

• protons and neutrons

• protons and electrons

• electrons and neutrons

Multiple Choice

How is the Periodic Table arranged?

• alphabetical order

• atomic number

• the year the element was discovered

• Albert Einstein decided how to arrange it.

Multiple Choice

What is located on the horizontal rows on the Periodic Table?

• families

• groups

• periods

Multiple Choice

In which direction would you find groups/families?

• horizontal

• vertical

Multiple Choice

How many different types of atoms make up an element?

• 1

• 2

• 3

Multiple Choice

How are symbols for elements written?

• numbers

• pictures

• letters

Multiple Choice

What is the symbol for carbon?

• Ca

• C

• Na

Multiple Choice

H is the symbol for____.

• Helium

• Hydrogen

• Iron

Multiple Choice

What is the charge of a proton?

• positive

• negative

• neutral

Multiple Choice

What is the charge of a neutron?

• positive

• neutral

• negative

Multiple Choice

Negative is the charge for _____.

• protons

• neutrons

• electrons

Multiple Choice

What is a subscript found in a formula?

• letter

• number that tells how many atom are needed

• star

​Chemistry Unit Review

Atoms, Periodic Table, Formulas, and Changes

​Parts Of The Atom

Multiple Choice

The small area in the center of an atom where most of the atom's mass is concentrated.

• neutron
• proton
• electron
• nucleus

Multiple Choice

A subatomic atomic particle that has a positive charge.

• neutron
• proton
• electron
• nucleus

Multiple Choice

A subatomic atomic particle that has a negative charge.

• neutron
• proton
• electron
• nucleus

Multiple Choice

A neutral atomic particle that is located in the atom's nucleus.

• neutron
• proton
• electron
• nucleus

Multiple Choice

The number of protons in an atom of an element.

• atomic number
• atomic mass
• electron shells
• valence number

Multiple Choice

Protons and neutrons are located in an atoms __________________.

• nucleus
• electron shell
• cell
• house

Multiple Choice

Electrons are located in _____________

• a neutron
• a proton
• the nucleus of an atom
•  a cloud orbiting the nucleus of an atom

Multiple Choice

An element's atomic mass is made up of ____________.

• the total number of protons, neutrons and electrons in an atom
• the total number of protons and neutrons in an atomic nucleus 
• the total number of electrons in the electron shell of an atom
• the total number of protons in an atom

Multiple Choice

What number indicates an electron?

• 1
• 2
• 3
• 4

Multiple Choice

Oxygen’s atomic number is 8. This means that an oxygen atom must have

• 8 electrons
• 8 protons
• 8 neutrons
• a mass number of 8

Multiple Choice

 What is the mass number of this element?

• 5
• 27
• 32
• 59

Multiple Choice

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Multiple Choice

What is the atomic mass of "F"

• 9
• 18
• 17
• 19

Multiple Choice

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Multiple Choice

Name the element

• Boron

• Carbon

• Nitrogen

• Oxygen

Multiple Choice

Electrons in the outermost orbital.

• Protons
• Neutrons
• Valence Electrons
• Isotopes

​The Periodic Table

​The GROUP an atom is in tells you the number of VALENCE ELECTRONS and how it will REACT

​

The PERIOD an atom is in tells you how many ENERGY LEVELS an atom has.​

Multiple Choice

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

Multiple Choice

The yellow atoms are called 

• metals
• nonmetals
• metalloids
• noble gases

Multiple Choice

How many Valance electrons does Iodine Have?

• 6
• 16
• 7
• 17

Multiple Choice

The period for Bromine is ___________.

• 3
• 2
• 4

Multiple Choice

Beryllium is in group number______.

• Group 2
• Group 3
• Group 4
• Group 7

Multiple Choice

Group 18 elements are known as the _____ _____ and have full valence shells.

• royal gases.
• supreme solids.
• noble gases.
• legit liquids.

Multiple Choice

Elements in the same ________ are more chemically similar.

• group
• period
• club
• table

Multiple Choice

The majority of elements on the periodic table are

• man made.
• nonmetals.
• metals.
• gases.

Multiple Choice

Which elements have the most similar chemical properties?

• K and Na
• K and Ca
• K and Cl
• K and S

Multiple Choice

What period and group is Silver (Ag)? 

• Period 2, Group 1
• Period 3, Group 16
• Period 5, Group 11
• Period 2, 14

Multiple Choice

The elements in this group have 5 valence electrons and include elements N, P, and As.

• Group 5
• Group 1
• Group 18
• Group 15

Multiple Choice

Which of the following is not a property of metals?

• brittle
• malleable
• lustrous
• conductive

Multiple Choice

Rows on the period table are called _____ while columns are called _____.

• groups, families
• groups, periods
• periods, groups
• families, groups

Multiple Choice

How many electrons do atoms need to be stable?

• 1
• 2
• 6
• 8

Multiple Choice

An outermost electron of an atom that participates in chemical bonding is called a(n)____________. They have the most energy of all electrons in an atom.  

• valence electron
• head electron
• available electron
• master electron

Multiple Choice

What color are the metals on this periodic table?

• green
• yellow
• blue

Multiple Choice

What color are the metalloids on this periodic table?

• blue
• yellow
• green

Multiple Choice

What color are the nonmetals on this periodic table?

• blue
• yellow
• green

Multiple Choice

Which Period would this element be found on just by looking at the shells/levels?

• 1
• 2
• 3
• 4

Multiple Choice

Which of the following determines the identity of an element..."what it is"?

• valence electrons
• neutrons
• protons
• energy levels

Multiple Choice

Which of the following determines the reactivity of an element..."what it does"?

• valence electrons
• neutrons
• protons
• energy levels

​Chemical Formulas And Reactions

Multiple Choice

In a chemical formula, this is used to represent the number of each atom being represented. 

• An Exponent
• The Coefficient
• A Molecule
• The Subscript

Multiple Choice

Two or more atoms bonded together. 

• A Molecule
• The Coefficient
• The Subscript
• An Atom Party

Multiple Choice

This appears before a chemical formula; it represents how many molecules there are. 

• An Atom
• The Subscript
• A Molecule
• The Coefficient

Multiple Choice

How many hydrogen atoms are in this chemical formula: 

• 4 hydrogen atoms
• 1 hydrogen atom
• 2 hydrogen atoms
• 3 hydrogen atoms

Multiple Choice

How many molecules are in this chemical formula?

• 4 Molecules
• 6 Molecules
• 2 Molecules
• 5 Molecules

Multiple Choice

How many Iron (Fe) atoms are in this chemical formula?

• 2 iron atoms
• 6 iron atoms
• 5 iron atoms
• 4 iron atoms

Multiple Choice

How many molecules are in this chemical formula?

• 5 molecules
• 4 molecules
• 2 molecules
• 10 molecules

Multiple Choice

In this image, the information in red is called the_______.

• Product
• Reactant
• Chemical Subscript
• Yield

Multiple Choice

In this image, the information to the right of the arrow (in black) is called the_______.

• Product
• Reactant
• Chemical Subscript
• Equation

Multiple Choice

The law of conservation of mass states that....

• Matter can be created
• Matter can be destroyed
• Matter can neither be created or destroyed
• E=mc²

Multiple Choice

Is this balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!
• No!

Multiple Choice

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2
• 6
• 1
• 4

Multiple Choice

If 5 grams of hydrogen gas reacts with 20 grams of oxygen gas, how much water will be produced?
2H₂ + O₂ --> 2H₂0
5g         20g            ?

• 5 grams 
• 20 grams
• 25 grams
• 15 grams

Multiple Choice

Why is the following chemical equation not balanced?
H_{2 +} O₂ → H₂O

• each side of the equation has a different number of oxygen atoms
• each side of the equation has a different number of hydrogen atoms
• each side has the same mass

Multiple Choice

What is the total number of atoms present in 5Na₃PO₄

• 5
• 40
• 55
• 60

Multiple Choice

You know you a chemical reaction has occurred if 

• there is a precipitate.
• there is a color change.
• there is a temperature change.
• All of these answers are evidence.

Multiple Choice

Which is an example of a chemical reaction?

• paper cut into small pieces
• chocolate melting in a pan
• flour and sugar mixed in a bowl
• cookies baking in an oven

Multiple Choice

In the following equation, what are the reactants?
CaO + 3 C → CaC₂ + CO

• CaO + 3 C
• CaC₂ + CO
• 3 C → CaC₂
• the stuff on the outside

Multiple Choice

In the following equation, what are the products?
HCl + Zn → H₂ + ZnCl₂

• HCl + Zn
• H₂ + ZnCl₂
• Zn → H₂
• the stuff on the outside

Multiple Choice

30 g of NaCl was broken into 20 g of Na and some Cl₂. How much Cl₂ was produced?

• 10 g
• 20 g
• 30 g
• 2 g

Multiple Choice

45 g of H₂O₂ was broken into 30 g of H₂O and O₂ gas. How much O₂ gas was made?

• 15 g
• 75 g
• 3 g
• 30 g

Multiple Choice

Which is an example of a heterogeneous mixture?

• sugar water

• brass

• table salt

• salad

Multiple Choice

A pure substance that cannot be broken down into any other substances

• atom

• element

• compound

• mixture

Multiple Choice

Smallest and basic particle of a pure substance

• element

• atom

• compound

• mixture

Multiple Choice

A pure substance made of two or more elements chemically combined in a set ratio

• element

• atom

• compound

• mixture

Multiple Choice

A combination of two or more substances that are not chemically combined

• element

• atom

• compound

• mixture

Multiple Choice

A mixture in which different materials can be easily distinguished

• heterogeneous mixture

• homogeneous mixture

• chemical formula

• molecule

Multiple Choice

Shows the elements in the compound and the ratio of atoms

• heterogenous mixture

• homogenous mixture

• chemical formula

• molecule

Multiple Choice

A group of atoms bonded together

• chemical formula

• chemical bond

• molecule

• solution

Multiple Choice

A mixture that forms when one substance dissolves another

• molecule

• solution

• pure substance

• compound

Multiple Choice

Matter that always has exactly the same composition

• molecule

• solution

• pure substance

• Chemistry

Multiple Choice

The study of the properties of matter and how matter changes

• Changeology

• Chemistry

• Mastery

• Biology

Multiple Choice

What is CO2 an example of?

• Element

• Compound

• Atom

• Mixture

Multiple Choice

Lemonade consists of several substances that are NOT chemically combined, so lemonade is classified as

• pure substance

• a compound

• a mixture

• an element

Multiple Select

What are examples of chemical formulas?

• H2O

• C12H22O11

• Salad

• Milk

• Lemonade

Multiple Choice

CO2, NaCl, and HCl may all be classified as

• compounds and pure substances.

• elements and pure substances.

• elements and molecules.

• elements and compounds.

Multiple Choice

The chemical formula of glucose is C6H12O6, so it is classified as a(n)

• element.

• mixture.

• solution.

• pure substance.

Multiple Choice

One difference between mixtures and pure substances is that

• mixtures can be physically separated.

• mixtures are made of one type of atom.

• pure substances have no chemical bonds.

• pure substances can be physically separated.

Multiple Choice

Suppose you have a container filled with iron and sand. You can separate the iron from the sand if you ____________ so this is a _________.

• use a magnet; mixture

• melt the sand; mixture

• add baking soda; chemical compound

• dissolve the sand in water; solution

Multiple Choice

In the classification of matter, how would we classify air?

• pure mixture

• pure substance

• homogeneous mixture

• heterogeneous mixture

Multiple Choice

The table lists the chemical formulas or symbols of a few common substances. Which two substances are compounds?

• aluminum and iron

• iron and sodium chloride

• carbon dioxide and aluminum

• sodium chloride and carbon dioxide

Multiple Choice

Ms. Roberts asked Tim to put the label "compound" on the correct jar in the picture. Which of the four substances is a compound?

• chlorine

• nitrogen

• sodium

• water

Multiple Choice

Water, H2O, is made up of different elements, hydrogen and oxygen. Is this type of combination a mixture or a pure substance?

• Because water is composed of two separate elements, it is a mixture.

• Because water can be heated and fairly easily turned to steam, it is a mixture.

• Because water is composed of elements found in the periodic table, it is a pure substance.

• Because water molecules all have a consistent ratio of hydrogen to oxygen, it is a pure substance.

Multiple Choice

What is a force of attraction between two atoms?

• mixture

• compound

• chemical bonding

• chemical property

Multiple Choice

What chart is used to organize the elements by atomic number?

• Atomic Table

• Periodic Table

• Kitchen Table

Multiple Choice

What is an atom?

• Smallest particle of a substance

• Raw materials made of only one kind of atom

Multiple Choice

What is a compound?

• Substances with molecules that have atoms from different elements

• Two or more atoms joined together

Multiple Choice

What is a neutron?

• Particle in an atom with a POSITIVE charge

• Particle in an atom with a NEGATIVE charge

• Particle in an atom with a NO charge

Multiple Choice

What is a proton?

• Particle in an atom with a POSITIVE charge

• Particle in an atom with a NEGATIVE charge

• Particle in an atom with a NO charge

Multiple Select

Which particles are located in the nucleus?

• Electrons

• Neutrons

• Protons

Multiple Choice

The number of protons is also equal to which number?

• Atomic Number

• Phone Number

• Prime Number

Multiple Choice

Which element has 11 protons?

• Sodium

• Magnesium

• Potassium

• Calcium

Multiple Choice

What makes up an atom?

• Protons, Neutrons, Electrons

• Aluminum, Carbon, Neon

• Solid, Liquid, Gas

• Metals, Non-metals, Metalloids

Multiple Choice

What particle is located in the nucleus and has a positive charge?

• Protons

• Electrons

• Neutrons

Multiple Choice

Which particle is located in the nucleus and has a neutral charge?

• Protons

• Electrons

• Neutrons

Multiple Choice

What particle is found OUTSIDE orbiting the nucleus?

• Protons

• Electrons

• Neutrons

Multiple Choice

An atom is the smallest unit of matter.

• Agree

• Disagree

Multiple Choice

The chemical formula for water is — 

• HO
• H₂O
• H₂O₂
• OH

Multiple Choice

What does number 2 represent in the carbon atom? 

• electron
• neutron
• proton
• nucleus

Multiple Choice

You should NEVER wear safety goggles when working with chemicals.

• Agree

• Disagree

Multiple Choice

How many protons are in one atom of Boron?

• 10
• 11
• 5
• 6

Multiple Choice

This model represents an element in the Periodic Table. Which element does this atomic model represent?

Multiple Choice

Substances that are made up of ONLY one type of atom (element) or compound.

• Heterogeneous mixture

• Pure substance

• Suspension

• Homogeneous mixture

Multiple Choice

A substance that contains only one type of atom is a(n)

• compound
• element
• heterogeneous mixture
• homogeneous mixture

Multiple Choice

The particle diagram shown is a:

• pure substance

• mixture

Multiple Choice

What is matter?

• Anything that has mass and occupies space
• Anything that has mass
• Anything that is made of air
• ALL of them 

Multiple Choice

Which of the following chemical formulas represents a compound? 

• C₃
• O₂
• CH₃CHO
• H₂

Multiple Choice

Which statement best describes an element?

• made from mixture 
• thousands in the world
• pure, made of only one atom
• can be separated 

Multiple Choice

Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –

• a gas at room temperature.
• made of two different elements.
• given off by green plants.

Multiple Choice

What is the term for combining 2 or more atoms together?

• atoms
• elements
• molecules
• compounds

Multiple Choice

Are these molecules also compounds?

• YES
• NO

Multiple Choice

Which of the following atomic symbols is written correctly?

• ee
• hE
• C
• CL

Multiple Choice

What is at the center of every atom?

• nuclear

• nucleus

• electron

• molecule

Multiple Choice

An electron of an atom...

• lives inside the nucleus and has a neutral charge.

• circles the nucleus and has a positive charge.

• lives inside the nucleus and has a negative charge.

• circles the nucleus and has a negative charge.

Multiple Choice

A subscript...

• the number of protons in an atom.

• the number of molecules present.

• shows the number of atoms of a specific element in a compound.

• the number an element is on the periodic table.

Multiple Choice

How many different elements are present in H₂COCH₂

• 5

• 4

• 3

• 2

Multiple Choice

Calculate the number of Oxygen atoms in Al(OH)₃

• 1

• 2

• 3

• 4

Multiple Choice

The ______ are numbers found on the lower right-hand side of an element symbol.

• Coefficient

• Exponent

• Multiplier

• Subscript

Multiple Choice

How many NEUTRON are there in this Hydrogen?

• 2

• 1

• 0

Multiple Choice

What makes up the nucleus?

• Protons + Neutrons

• Electrons+ Protons

• Neutrons + Electrons

Multiple Choice

What are three subparticles of an atom?

• Proton, Neutron, Electron

• Hydrogen, Oxygen, Helium

• One Oxygen and two Hydrogen. $$H_2O$$  

Multiple Choice

How many different elements are present in H₂COCH₂

• 5

• 4

• 3

• 2

Multiple Choice

Calculate the number of Oxygen atoms in Al(OH)₃

• 1

• 2

• 3

• 4

Multiple Choice

How many atoms are there TOTAL in H₂SO₄ ?

• 6

• 5

• 7

• 3

Multiple Choice

What does the subscript in a chemical formula tell you?

• How many molecules are present

• How many atoms are present

• How many elements are present

• How many neutrons are present

Multiple Choice

How many elements are in this chemical formula? $$NaHCO_3$$  

• 1

• 2

• 3

• 4

Multiple Choice

NaCl is the chemical formula for salt. Is NaCl considered a compound or an element?

• element

• compound

• both

• neither

Multiple Choice

What charge does an atom have when it GAINS electrons?

• Positive

• Negative

• Neutral

Multiple Choice

What subatomic particle has most likely been changed in an ion?

• The number of electrons

• The number of protons

• The number of neutrons

Multiple Choice

Sodium has an atomic number of 11, how many protons does this atom have?

• 22
• 11
• 12
• 2

Multiple Choice

How many elements are in C₆H₁₂O₆?

• 1
• 3

• 24

• 48

Multiple Choice

How many Hydrogen atoms are in Water?

• 1
• 2
• 3
• 4

Multiple Choice

What term is used for the joining of atoms to form new substances?

• valence electrons
• physical bonding
• energy level
• chemical bonding

Multiple Choice

How many valence electrons are in the element Carbon?

• 2 electrons

• 6 electrons

• 4 electrons

• 8 electrons

Multiple Choice

What happens in an ionic bond?

• Atoms gain or lose electrons and bond through charge.

• Atoms share valence electrons.

• Atoms connect through similar affinities (e.g. both hydrophobic)

Multiple Choice

What happens in a covalent bond?

• Atoms gain or lose electrons and bond through charge.

• Atoms share valence electrons.

• Atoms connect through similar affinities (e.g. both hydrophobic)

Multiple Choice

Carbon and other nonmetals are found in which area of the periodic table?

• in the bottom rows

• on the left-most side

• on the right side

• in the middle columns

Multiple Choice

The order of the elements in the periodic table is based on what?

• atomic mass

• the number of protons in the nucleus

• the electric charge of the nucleus

• the number of neutrons in the nucleus

Multiple Choice

How many neutrons does this isotope have?     ⁸⁹ ₃₆Kr

• 53
• 36
• 89
• 125

Multiple Choice

Which of the following is a Replacement Reaction?

• 4Na + O2 > 2Na2O

• HCl + NaOH > H2O + NaCl

• 2H2 + O2 > 2H2O

• H2O2 > H2 + O2

Multiple Choice

What is the atomic weight of H2O?

• 33

• 12

• 24

• 18

Multiple Choice

Where is the mass of the atom?

• In the shells

• The valence electrons

• The nucleus

• The electrons

Multiple Choice

Which part of the atom takes up the most space? (What makes up most of the volume of an atom?)

• The Electrons

• The Protons

• The Neutrons

• The Nucleus

Multiple Choice

The Nucleus of an atom is made up of:

• protons and electrons

• protons and neutrons

• electrons and neutrons

• electrons

Multiple Choice

The atomic number of boron is 5. Boron-11 has an atomic mass of 11. It contains:

• 5 protons and 6 electrons.

• 6 protons and 5 neutrons.

• 5 electrons and 6 protons.

• 5 protons and 6 neutrons.

Multiple Choice

Which of the following equation is balanced?

• Na + O2 > Na2O

• 4Na + 2O2 > Na2O

• Na + 4O2 > 2Na2O

• 4Na + O2 > 2Na2O

Multiple Choice

Which of the following equation is balance?

• N2 + H3 > NH3

• N2 + 3H2 > 2NH3

• 3N2 + 2H3 > NH3

• 2N2 + H3 > 3NH3

Multiple Choice

Which of the following equation is balance?

• Ca + O2 > CaO

• N2 + O2 > NH3

• H2O + NaCl > HCl + NaOH

• K + Cl2 > KCl

Multiple Choice

Which of the following compounds is expected to have a pH of 12?

• HCl

• H2O

• LiOH

• H2SO4

Multiple Choice

Which of the following is an acid?

• NaCl

• CH4

• KOH

• HCl

Multiple Choice

Which group on the periodic table is composed of all gases?

• 1

• 3

• 16

• 18

Multiple Choice

Atomic number of an element is equal to:

• the number of electrons in the nucleus

• the number of protons in the nucleus

• the number of neutrons in the nucleus

• the number of electron shells

Multiple Choice

Which would be the expected pH level for a strong acid?

• pH level of 14

• pH level of 10

• pH level of 7

• pH level of 2

Multiple Choice

Using the periodic table, how many Protons does one Carbon atom have?

• 2

• 4

• 6

• 12

Multiple Choice

Which element has 11 protons in its nucleus?

• Cu

• B

• Na

• C

Multiple Choice

How many electrons does an atom of Chlorine have?

• 1

• 3

• 17

• 35

Multiple Choice

Which of the following compounds contain an ionic bond?

• HCl

• NH3

• CH4

• NaCl

Multiple Choice

Which of the following compound contain a covalent bond?

• Li2O

• NaCl

• NH3

• MgCl2

Multiple Choice

The model represents which of the following element?

• Nitrogen

• Silicon

• Argon

• Chlorine

Multiple Choice

Which of the following is true for Covalent Bonds?

• Electrons are transferred from one atom to another.

• Electrons are shared between atoms.

• They are the bonds that form between metals and non-metals.

• There is electrostatic attraction.

Multiple Choice

What type of bonds form between metals and a non-metal?

• Covalent bonds

• Ionic bonds

• Nuclear bonds

• Polar bonds

Multiple Choice

How many valence electrons does Oxygen have?

• 2

• 4

• 6

• 8

Multiple Choice

Which of the following elements have 5 valence electrons?

• Boron

• Carbon

• Iodine

• Nitrogen

Multiple Choice

Which of the following element could this Dot diagram represent?

• Carbon

• Iodine

• Sodium

• Nitrogen

Multiple Choice

Kool-Aid can be used to tie dye shirts by just mixing it with hot water to make a hot Kool-Aid solution.

In the Kool-Aid solution, the Kool-Aid is the___ and the water is the ___.

• element / compound

• atom / molecule

• reactant / product

• solute / solvent

Multiple Choice

This salad dressing is a ___ mixture. So it ___ a solution.

• homogeneous / is not

• heterogeneous / is not

• heterogeneous / is

• homogeneous / is

Multiple Choice

This tea, without the lemon, is a ___ mixture so it

___ a solution.

• homogeneous / is

• heterogeneous / is

• homogeneous / is not

• heterogeneous / is not

Multiple Choice

The solubility of a solute tells us ___.

• how much solute dissolves in a given amount of solvent

• how much solvent dissolves in a given amount of solute

• how fast a solvent dissolves in a given amount of solute

• how fast a solute dissolves in a given amount of solvent

Multiple Choice

The solubility of sodium chloride (NaCl) in 100 mL of H₂O at 20⁰C is about ___.

• 43 g/100 mL

• 50 g/ 100 mL

• 25 g/100 mL

• 37 g/100/mL

Multiple Choice

What is the solubility of sugar in 100 mL of water at 80⁰C?

• 40 g/100 mL

• 350 g/100 mL

Multiple Choice

If you wanted to dissolve 250 g of sugar in 100 mL of water, the water would have to be at least

___.

• 10⁰C

• 25⁰C

• 35⁰C

• 45⁰C

Multiple Choice

Which salt is the most soluble in 100 mL of water at 100⁰C?

• Ce2(SO4)3

  cerium sulfate

• NaCl

  sodium chloride

• KClO3

  potassium chlorate

• KCl

  potassium chloride

• K2Cr2O7

  potassium dichromate

Multiple Choice

Which salt is the least soluble in 100 mL of water at 100⁰C?

• Ce2(SO4)3

  cerium sulfate

• NaCl

  sodium chloride

• KClO3

  potassium chlorate

• KCl

  potassium chloride

• K2Cr2O7

  potassium dichlorate

Multiple Choice

Which salt is the most soluble in 100 mL of water at all temperatures?

• CaCl2

  calcium chloride

• NaNO3

  sodium nitrate

• KNO3

  potassium nitrate

• KCl

  potassium chloride

• K2Cr2O7

  potassium dichromate

Multiple Choice

If you wanted to dissolve about 45 g of potassium chloride in 100 mL of water, the water would have to be at least ___ ⁰C.

• 20

• 30

• 40

• 50

Multiple Choice

How much potassium nitrate, KNO₃, will dissolve in 200 mL of water at 10⁰C?

• 20

• 30

• 40

• 50

Multiple Choice

When the solvent in a solution CAN dissolve more solute, the solution is ___.

• unsaturated

• saturated

• supersaturated

Multiple Choice

When the solvent in a solution CANNOT dissolve more solute and some solute settles on the bottom of the container, the solution is ___.

• unsaturated

• saturated

• supersaturated

Multiple Choice

This solution of potassium nitrate and water is a(n)

___ solution because there is no KNO₃ on the bottom.

• saturated

• unsaturated

• supersaturated

Multiple Choice

This solution of potassium nitrate and water is a(n)

___ solution because there is KNO₃ on the bottom.

• saturated

• unsaturated

• supersaturated

Multiple Choice

This solution of sucrose (table sugar) and water is a(n)

___ solution because there are crystals in the solution. This is how rock candy is made!

• saturated

• unsaturated

• supersaturated

Multiple Choice

The pH of a solution depends on the amount H⁺/H₃O⁺ ___ in the solution.

• atoms

• ions

• molecules

• elements

Multiple Choice

The the lower the pH of a substance, the ___ H⁺/H₃O⁺ ions it has in it and the ___ OH^- ions it has in it.

• more/less

• less/more

Multiple Choice

The the higher the pH of a substance, the ___ H⁺/H₃O⁺ ions it has in it and the ___ OH^- it has in it.

• more/less

• less/more

Multiple Choice

The the pH scale goes from ___ to ___.

• 0 - 20

• 5 - 25

• 0 - 14

• 1 - 50

Multiple Choice

Bases have a pH of ___.

• 0 to less than 7

• 5 to 14

• more than 7 to 14

• 1 to 14

Multiple Choice

Acids have a pH of ___.

• 0 to less than 7

• 5 to 14

• more than 7 to 14

• 1 to 14

Multiple Choice

Substances with a of 7 like water are neutral meaning that they have ___.

• more H+ ions than OH- ions

• less H+ ions than OH- ions

• equal amounts of H+ ions and OH- ions

Multiple Choice

H₃O⁺ is called the ___ ion.

• hydrogen

• hydroxide

• hydronium

• hydro

Multiple Choice

OH^- is called the ___ ion.

• hydrogen

• hydroxide

• hydronium

• hydro

Multiple Choice

Blue litmus paper turns ___ in acids.

• green

• red

• purple

• pink

Multiple Choice

Red litmus paper turns ___ in bases.

• green

• brown

• blue

• pink