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 atomic number of this atom?

• 1
• 3
• 4
• 7

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

• 11
• 5
• 6
• 16

Tags

NGSS.MS-PS1-1

Atoms have no electric charge because they...

• Have an equal number of charged and non-charged particles

• Have neutrons in their nuclei

• Have an equal number of electrons and protons

• Have an equal number of neutrons and protons

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Elements in the same ________ are more chemically similar.

• group
• period
• club
• table

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

A proton is....

• A negatively charged subatomic particle
• A positively charged subatomic particle
• A neutrally charged subatomic particle
• The only subatomic particle located in the nucleus

Tags

NGSS.HS-PS1-8

• 10
• 2
• 8
• 18

• 17
• 18
• 7
• 3