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

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.

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