The center of an atom is known as the

• nucleus

• electron cloud

• neutron cloud

• mass circle

Protons have this type of charge

• positive
• negative
• neutral - no charge

A particle that orbits around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

What does the nucleus of an atom contain?

• Electrons and neutrons

• Protons and neutrons

• Neutrinos and positrons

• Electrons and megatrons

Tags

NGSS.MS-PS1-1

This subatomic particle has basically no mass

• protons
• neutrons
• electrons
• protons and neutrons

The atomic number of an atom is the number of 

• protons in its electron cloud
• protons in its nucleus
• neutrons in its nucleus
• electrons and neutrons in the nucleus

An atom with atomic number 6 would have how many protons?

• 6
• 12
• 3
• cannot be determined 

The two areas of an atom are the 

• nucleus and electron cloud
• proton cloud and nucleus
• inside and outside
• mass and volume

How many atoms are in this molecule?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

Which letter represents a proton?

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1