Atomic Structure Practice

What is the number of protons that the element in this image contains?

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• the mass #

Tags

NGSS.MS-PS1-1

How many electrons does Oxygen have?

• 16

• 8

• 15.99

• O

Tags

NGSS.MS-PS1-1

• Protons + Electrons
• Atomic Number - Mass
• Mass - Atomic Number 

Tags

NGSS.MS-PS1-1

Which subatomic particle has a negative charge in the atom?

• proton

• neutron

• electron

• quark

Tags

NGSS.MS-PS1-1

If an atom has 10 electrons, how many protons does it have?

• 0

• 1

• 10

• 5

Tags

NGSS.MS-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?

• 1
• 3
• 4
• 7

Tags

NGSS.MS-PS1-1

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

An element has the mass number 12 and atomic number  6. The number of neutrons in it is:

• 6
• 10
• 4
• 8

Tags

NGSS.MS-PS1-1