The Chemistry of Life II

What is the atomic mass (mass number) defined as?

• the number of protons

• the number of protons and neutrons

• the number of neutrons

• the number of protons and electrons

An element has the atomic mass (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

Which subatomic particle has a negative charge in the atom?

• proton

• neutron

• electron

• quark

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_{What particle is found in the nucleus and has no charge?}

• electron
• neutron
• proton
• atom

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_{Number of protons that an atom has}

• Atomic symbol
• Atomic Number
• Atomic Mass
• Mass Number

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NGSS.MS-PS1-1

If an atom has 10 electrons, how many protons does it have?

• 0

• 1

• 10

• 5

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NGSS.MS-PS1-1

What charge do protons have?

• Positive

• Negative

• Neutral

What is the Atomic Number of this Element

• 7

• 3

• 4

• 1

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NGSS.MS-PS1-1

What is the Atomic Mass Number of the element mentioned above

• 12

• 6

• C

• 16

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NGSS.MS-PS1-1

What is the number of protons in Magnesium atom ?

• 12

• 24

• 23

• 8

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NGSS.MS-PS1-1