Atomic Number and Atomic Mass

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the mass number defined as?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

Tags

NGSS.HS-PS1-8

What is the atomic number of this atom?

• 1
• 3
• 4
• 7

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

The fluorine atom has an atomic number of

• 19

• 9

Tags

NGSS.MS-PS1-1

What is the mass number and atomic number ?

• Mass number = 7, atomic number = 14

• Mass number = 14, atomic number = 7

Tags

NGSS.MS-PS1-1

Which particle has a positive charge?

• electron
• orbital
• proton
• neutron

Choose the particle that has no charge.

• nucleus
• neutron
• proton
• electron

The mass of one proton is greater than the mass of one...

• neutron
• electron

Tags

NGSS.MS-PS1-1

Which subatomic particle has a negative charge in the atom?

• proton

• neutron

• electron

• quark

Tags

NGSS.HS-PS1-1