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

The particles that are found in the nucleus of an atom are

• neutrons and electrons
• electrons only
• protons and neutrons
• protons and electrons

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

• electrons
• nucleus
• protons
• empty space

Which of the following determines the type of element that an atom makes?

• size of the nucleus
• number of protons
• how much the atom weighs
• number of neutrons