Atoms

All matter is made of what 

• energy 

• atoms 

• electrons 

• compounds 

What is at the center of every atom?

• an electron

• a compound

• a molecule

• a nucleus

The positive particles of an atom are 

• electrons 

• positrons 

• neutrons 

• protons 

Particles in an atom that are neutral and have no charge are 

• negatrons 

• electrons 

• neutrons 

• protons 

In an atom, what is the number of protons equal to?

• the number of electrons

• the number of neutrons

• the number of molecules

• the number of nuclei

True or False? Neutrons have a negative charge

• True

• False

Which of the following is a negatively charged subatomic particle?

• Electron

• Proton

• Neutron

• Quark

Where are electrons of an atom found?

• Nucleus

• Electron Cloud

• Some are in the nucleus and some in the electron cloud.

• They are moving everywhere.

Most of the mass in an atom is concentrated in the...

• electrons

• nucleus

• protons

• empty space

What do protons, electrons and neutrons make?

• element

• compound

• atom