Physical Science Unit 9 Review

These subatomic particles have a positive charge.

• electrons

• neutrons

• protons

How many protons are in an atom of aluminum?

• 13

• 26.982

• 27

• 14

Tags

NGSS.MS-PS1-1

How can you determine the number of neutrons an atom has?

• Neutrons = Atomic Number

• Neutrons = Mass Number

• Neutrons = Protons + Atomic Number

• Neutrons = Mass Number - Protons

Where are electrons located in an atom?

• Nucleus

• Outside the atom

• Electron cloud

These subatomic particles have a negative charge.

• electrons

• neutrons

• protons

Tags

NGSS.MS-PS2-3

How many neutrons are in an Iodine - 127 isotope?

• 127

• 74

• 53

• 126.904

This scientist discovered the nucleus of the atom.

• Thomson

• Bohr

• Rutherford

• Einstein

Where are neutrons located in an atom?

• nucleus

• outside the atom

• electron cloud

These subatomic particles have no charge.

• electrons

• neutrons

• protons

How many electrons are in a neon atom?

• 10

• 20

• 21

• 20.180

Tags

NGSS.MS-PS1-1