Elements and Atoms Review

The center of an atom is called the

• nucleus

• proton

• neutron

• quark

The particles in the center of the atom are

• protons

• neutrons

• protons and neutrons

• electrons

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NGSS.MS-PS1-1

The particles found in energy levels or shells are

• protons

• neutrons

• protons and neutrons

• electrons

A(n) _______________ is the basic unit of matter.

• cell

• molecule

• atom

• organ

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NGSS.MS-PS1-1

What is the atomic number?

• 19

• 39

• 58

• 40

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NGSS.MS-PS1-1

How many protons are in potassium?

• 39

• 20

• 19

• 86

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NGSS.MS-PS1-1

How many neutrons are in sodium?

• 11

• 23

• 12

• 34

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NGSS.MS-PS1-1

How many electrons are in Sodium?

• 23

• 11

• 12

• 34

Tags

NGSS.MS-PS1-1

What is the atomic mass of sodium?

• 11

• 12

• 23

• 34

Tags

NGSS.MS-PS1-1

How many oxygen atoms are there?

• 1

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1