Atomic Structure Pre Assessment

Which two subatomic particles are in the nucleus?

• Protons and Neutrons

• Protons and Electrons

• Neutrons and Electrons

Protons have a ___________ charge.

• positive

• negative

• neutral

Electrons have a ____________ charge.

• positive

• negative

• neutral

Neutrons have a ___________ charge.

• positive

• negative

• neutral

Neutral means there is _______ charge

• a positive

• a negative

• no

Tags

NGSS.MS-PS2-3

Which subatomic particle has the least mass?

• protons

• neutrons

• electrons

Most of an atom is made up of...

• energy

• protons

• empty space

• nucleus

Atoms have the same number of -

• neutrons and protons

• protons and electrons

• electrons and neutrons

What is the mass number of sodium (Na) if the atom has 12 neutrons?

• 23

• 22

• 1

• 24

What is the mass number of Oxygen (O) if the atom has 7 neutrons?

• 8

• 15

• 16

• 1