Atoms and Elements

What is the name of this element?

• K
• Potassium
• 39.098
• 19

Tags

NGSS.MS-PS1-1

What is the atomic mass of this element? 

• Potassium
• K
• 19
• 39.098

Tags

NGSS.MS-PS1-1

What is the atomic number of this element? 

• 19
• Potassium
• 39.098
• K

Tags

NGSS.MS-PS1-1

What is the chemical symbol of this element? 

• Potassium
• K
• 39.098
• 19

An atom has 54 protons, 54 electrons, and 131 neutrons. What is the atomic number of the atom?

• 54
• 77
• 131
• 185

Tags

NGSS.MS-PS1-1

The protons in an atom’s nucleus have what kind of charge?

• positive
• negative
• neutral
• no charge

What kind of charge do neutrons have?

• positive 
• negative
• neutral
• -3

How many protons does this atom have?

• 4

• 5

• 9

• 13

Tags

NGSS.MS-PS1-1

How many neutrons are in this atom?

• 9

• 18

• 19

• 10

• 28

Tags

NGSS.MS-PS1-1

What is the atomic number of an element with three protons?

• 2

• 1

• 3

• 6