The Atom

What is at the center of every atom?

• An electron
• A compound
• A molecule
• A nucleus

Tags

NGSS.HS-PS1-8

Which two particles make up the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Molecules and Compounds
• Neutrons and Electrons

Tags

NGSS.MS-PS1-1

The particles with no charge in an atom are the _______.

• electrons
• neutrons
• protons
• protons and neutrons

Tags

NGSS.MS-PS1-1

The positively charged particles of an atom are the ________.

• electrons
• protons
• neutrons
• protons & neutrons

Tags

NGSS.MS-PS1-1

The negatively charged particles of an atom are the ______.

• electrons
• protons
• neutrons
• protons & neutrons

Tags

NGSS.MS-PS1-1

A neutron has this charge

• negative
• positive
• neutral

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

• Proton
• Neutron
• Electron
• Quark

Tags

NGSS.MS-PS1-1

What number indicates an electron?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS2-3

What is the mass number?

• the number of protons
• the sum of the number of protons and the number of neutrons in the nucleus of an atom 
• the number of electrons
• the number of neutrons

Tags

NGSS.HS-PS1-8

What is the atomic number?

• number of protons
• number of neutrons