Protons, Neutrons, Electrons

What is the lightest subatomic particle?

(a)  

• electron

• proton

• neutron

What vocabulary word completes the missing box in the table?

• electron cloud

• nucleus

• atom

• electron

Tags

NGSS.MS-PS1-1

A neutron has what charge?

• Positive

• Negative

• It has no charge (it is neutral)

How many protons does krypton have?

• 84

• 36

• 48

• 8

How many electrons does oxygen have?

• 8

• 16

• 2

• 15

Tags

NGSS.MS-PS1-1

How many neutrons are in magnesium?

• 12

• 24

• 25

• 36

Tags

NGSS.MS-PS1-1

How many electrons does helium have?

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS1-1

An electron has what charge?

• Positive

• Negative

• It has no charge (it is neutral)

Tags

NGSS.MS-PS2-3

How do you find the number of neutrons in an atom?

• It's the same as the atomic #

• It's the same as the mass number

• Subtract the atomic # from the mass number

• Add the mass number and the atomic #

How many electrons are in Potassium

• 19

• 39

• 20

• 58

Tags

NGSS.MS-PS1-1