Atomic Number, Atomic Mass, Mass Number

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?

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

What is the atomic number of this nucleus?

• 1
• 3
• 4
• 7

Tags

NGSS.HS-PS1-8

What is the mass number of this nucleus?

• 1
• 3
• 4
• 7

Tags

NGSS.HS-PS1-8

What is the atomic number of this atom?

• 1
• 3
• 4
• 7

Tags

NGSS.HS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the atomic number of this atom?

• 4
• 5
• 9
• none of the above

Tags

NGSS.HS-PS1-1

What is the mass number of this atom?

• 4
• 5
• 9
• none of the above

Tags

NGSS.MS-PS1-1

What is the atomic number of Nickel? (enlarge the periodic table)

• 58.69

• 28

• 59

• 87

Tags

NGSS.HS-PS1-1

How many protons are in a sodium atom? (tap to enlarge the periodic table)

• 12 protons

• 3 protons

• 11 protons

• 23 protons

Tags

NGSS.MS-PS1-1