Benchmark 1 Review

Benchmark 1 Review

What does an atom even look like?

Adding/ removing electrons makes IONS

Isotopes: Number of PROTON stays the same but he number of NEUTRON changes

Multiple Choice

Protons are found in the ___________________.

• Electron Cloud

• Energy Shells

• Nucleus

• Randomly distributed, no set place

Multiple Choice

All the mass of the atom is coming from the sum of________________.

• Proton

• Proton and Electron

• Proton and Neutron

• Neutron and Electron

Multiple Choice

Neutrons work as a _____________. They keep the nucleus from falling apart.

• force of attraction

• glue

Multiple Choice

When the number of PROTONS AND ELECTRONS IS not the SAME

• Isotope

• Neutral Atom

• Ion

• Element

Fill in the Blanks

If the number of proton is staying the same and the number of neutron is changing?

Multiple Choice

Zirconium (Zr) has an atomic number of 40 and an atomic mass of 91.224. Which answer gives the correct amount of protons, neutrons and electrons?

• 40 protons, 40 neutrons, 40 electrons

• 40 protons, 40 neutrons, 51 electrons

• 40 protons, 51 neutrons, 40 electrons

• 40 protons, 52 neutrons, 40 electrons

Periodic Table

• Study the concept map on the next slide and take notes if needed.

Fill in the Blanks

Mendeleev arranged the periodic table using ___________ ____________. (Two Words all lower case)

Multiple Choice

How did Moseley rearrange the periodic table?

• mass number

• physical and chemical properties

• number of neutrons

• atomic number

Multiple Choice

All the members of the same row/ period will have

• same electrons

• same properties

• same number of shells

• same properties

Multiple Choice

All the members of the same column/ family will have

• similar properties

• same number of shells around the nucleus

• same number of neutrons

• same melting and boiling point

Multiple Select

Which of the following pairs shows the LARGEST atomic size element FIRST?

• Ge, Ni

• Si, Ar

• Rb, I

• Hg, Ba

Multiple Choice

Which elements are in the same period?

• A & F
• F, B & D
• E & D
• F & B

Multiple Choice

_____________ has the largest atomic radius

• Onganesson (118)

• Francium (87)

• Hydrogen (1)

• Fluorine (9)

Multiple Choice

What is group 18 called?

• Noble Gas

• Valence Group

• Period

• Most Reactive

Multiple Choice

Which group on the periodic table is the least reactive?

• Group 1

• Group 2

• Group 17

• Group 18

Multiple Choice

An ion with a positive charge is a(n) __________________.

• Anion

• Cation

Multiple Choice

Is the element shown in this image an ion, isotope or normal atom?

• atom
• isotope
• cation (+ ion)
• anion (- ion)

Multiple Choice

Adding or subtracting neutrons (charge = 0, mass = 1) makes the element change into an...

• ion
• mixture
• isotope
• neutral atom

Multiple Choice

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Multiple Choice

Which elements have the most similar chemical properties?

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

Multiple Choice

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

Multiple Choice

Non-metals are

• malleable
• heat conducting
• not ductile
• expensive

Multiple Choice

A metalloid can

• act as a metal
• act as a non-metal
• act as a metal or a non-metal
• has properties that can't be determined

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

• 19

• 18.9984

Multiple Choice

All metals have the following properties

• good conductors of heat and electricity

• dull

• poor conductors of heat and electricity

• conduct electricity under special conditions

Multiple Choice

Which atom has the largest atomic radius?

• potassium
• rubidium 
• francium
• cesium

Multiple Choice

Which of the following will have a larger radius than Zinc?

• Gallium
• Aluminum
• Magnesium
• Strontium

Multiple Choice

In which group would an element that is very reactive most likely be located?

• 1

• 5

• 15

• 18

Multiple Choice

Two elements that have similar physical and chemical properties are most likely in the same...

• period

• row

• group

Physical and Chemical Changes

• Study the concept map. Take notes and answer questions.

Multiple Select

which one is not an indicator of a chemical change

• formation of gas

• formation of a solid (precipitate)

• formation of liquid

• change of color

• change in temperature

Multiple Choice

Stanley left an ice cube on his kitchen counter. An hour later, Stanley observed that the ice cube melted. Which statement best describes this change?

• Ice melting is a physical change because a new substance is created.
• Ice melting is a chemical change because a new substance is created.
• Ice melting is a chemical change because it may be reversed.
• Ice melting is a physical change because it may be reversed.

Multiple Choice

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Multiple Choice

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Multiple Choice

A change that does not result in a new substance.

• Physical Change
• Chemical Change 

Multiple Choice

When two substances are mixed, they might form a new substance.  Which of the following would indicate that a new substance has been formed?

• The temperature of the mixture decreases.
• The volume of the mixture increases.
• The mass of the mixture increases.
• One of the substances dissolves.

Multiple Choice

How does a positively charged ion form?

• An atom loses an electron
• An atom gains an electron
• An atom gains a proton
• An ionic compound dissolves

Multiple Choice

How does a positively charged ion form?

• An atom loses an electron
• An atom gains an electron
• An atom gains a proton
• An ionic compound dissolves

Multiple Choice

What charge does a potassium (K) ion have?

• +1
• -1
• +2 
• -2

Multiple Choice

What charge does a bromine (Br) ion have?

• -1
• -2
• -3
• -4

Multiple Choice

Nitrogen has ____ valence electrons and wants ____ more to fill its outer shell.

• 3;5
• 5;3
• 5;5
• 3;3

Multiple Choice

How many electrons are needed in the outer energy levels of most atoms to be stable?

• 2
• 4
• 6
• 8

Multiple Choice

Beryllium will ____ valence electrons when forming an ionic bond.

• lose 4
• gain 4
• lose 2
• gain 2

Multiple Choice

A cation is a ____ ion.

• negative
• positive
• neutral
• ficticious

Multiple Choice

A anion will be a ____ ion.

• negative
• positive
• neutral
• ficticious

Multiple Choice

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

Multiple Choice

What do atoms that form positive ions tend to do?

• Tend to lose electrons 
• Tend to lose protons
• Tend to gain electrons
• Tend to gain protons

Multiple Choice

If an atom has an equal number of protons and electrons it is a...

• Positive ion
• Negative ion
• Isotope
• Neutral atom

Multiple Choice

If an atom gains an electron it is a(n)

• Positive ion

• Negative ion

• Isotope

• Neutral Atom

Multiple Choice

Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)

• H₃SO₄
• HSO₄
• H₄S₃O
• H₂O

Multiple Choice

How many atoms are present if there is no subscript following the element symbol?

• 0

• 2

• only 1

• 1 million

Multiple Choice

A subscript is the small number below the element symbol that tells the number of _______ of that element.

• atoms

• valence electrons

• protons

• elements

Multiple Choice

How many Hydrogen atoms in 3(NH₄)₂CrO₄?

• 4

• 2

• 8

• 24

Multiple Choice

How many Oxygen atoms are in Al₂(SO₄)₃?

• 4

• 12

• 7

• 24

Multiple Choice

How many Nitrogen atoms are in (NH₄)₂CrO₄?

• 1

• 2

• 8

• 16

Multiple Choice

How many Hydrogen atoms are in 4H₂O?

• 6

• 8

• 2

• 4