Atom

Subatomic particles that have a negative charge

• electrons

• protons

• quarks

• neutrons

Which particles are located in the nucleus? 

• Protons & Electrons 
• Electrons & Neutrons 
• Protons & Neutrons 

An atom has 25 protons and 30 neutrons. How many electrons are needed to make the atom neutral?

• 0

• 25

• 30

• 35

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

What is this subatomic particle that has no charge?

• Electron

• Neutron

• Proton

• Megatron