Unit 2: Atoms

This particle is found in the nucleus and has no charge

• Neutron
• Proton
• Electron

Tags

NGSS.HS-PS1-8

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

The first person to ever talk about an atom was

• Democritus

• Rutherford

• Dalton

• JJ Thomson

All matter is made of what?

• energy 
• atoms 
• electrons 
• compounds 

How did Rutherford discover the nucleus?

• Cathode tube ray experiment

• Gold Foil Experiment

• Planetary Model

• Plum Pudding Model

Who stated that all atoms of the same element are excacty alike?

• Democritus
• Dalton
• Thomson
• Bohr

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Thomson

• Ernest Rutherford
• John Dalton
• Democritus

What contribution did John Dalton make to atomic theory? 

• He discovered that every atom was positively charged. 
• He discovered that every element consisted of one type of atom.  
• He discovered that atoms had nuclei. 
• He discovered that atoms could be divided into smaller parts.