Atomic Theory JC Science

This particle is found in the nucleus and has no charge

• Neutron
• Proton
• Electron

This particle is found in the nucleus and has a positive charge

• Electron
• Proton
• Neutron

This is a negatively charged particle found outside the nucleus

• Electron
• Proton
• Neutron

This contains most of the mass of an atom

• Electron Cloud
• Nucleus
• Electron

All matter is made of what?

• energy 
• atoms 
• electrons 
• compounds 

The first person to ever talk about an atom was

• Democritus
• Rutherford
• Dalton

This is the simplest of all atoms and contains only one proton and one electron

• Oxygen
• Hydrogen
• Water

Contributes basically no mass to an atom.

• protons
• neutrons
• electrons
• protons and neutrons

The atomic number for Oxygen is 8, so

• there are 8 protons in the atom
• the atomic mass is less than 8
• the mass of the atom is 8
• the atom is decaying

What are the two types of charge in an atom?

• Positive and Negative
• Neutral and Negative
• Positive and Neutral