Atomic Structure 2021

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 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

How many electrons does the first shell hold?

• 1

• 2

• 4

• 8

Tags

NGSS.MS-PS1-1

The central region of an atom where its neutrons and protons are located is the

• nucleus

• electron cloud

• core

• center

Tags

NGSS.MS-PS1-1