Unit 2 Atoms Review

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the mass number defined as?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the atomic number of this atom?

• 1
• 3
• 4
• 7

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NGSS.HS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

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NGSS.HS-PS1-8

What is the atomic number of Barium, Ba? (enlarge the periodic table)

• 20

• 38

• 56

• 88

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NGSS.MS-PS1-1

An element has the mass number 12 and atomic number 6. The number of neutrons in it is:

• 6

• 10

• 4

• 8

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NGSS.MS-PS1-1

Atoms of the same element which have a different number of neutrons are called _________________.

• ions

• isotopes

• quarks

• molecules

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NGSS.HS-PS1-8

Which subatomic particle has a negative charge in the atom?

• proton

• neutron

• electron

• quark

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NGSS.MS-PS1-1

How many neutrons does C-14 [atomic #6] contain? (tap to enlarge the image)

• 6

• 7

• 14

• 8

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NGSS.HS-PS1-8

The number in Kr-84 represents what about Krypton?

• The number of electrons

• The number of protons

• The mass number

Tags

NGSS.MS-PS1-1