Atomic Theory

Who was the early philosopher who developed the original idea of an atom?

• Pythagoras

• Socrates

• Democritus

What does "atomos" mean?

• Invisible

• Uncuttable

Which philosopher received more recognition even though he was wrong?

• Aristotle

• Democritus

Why couldn't Aristotle or Democritus "prove" their ideas. 

Dalton believed that atoms were "indivisible."  This means they 

• could not be cut into smaller parts.

• couldn't be seen.

What did J.J. Thompson discover?

According to JJ Thompson, are atoms indivisible?

• Yes, they cannot be divided into smaller parts.

• No, they can be divided into smaller parts.

Why was JJ Thompson's model called the "Plum Pudding Model" ? 

 

What did Ernest Rutherford's Gold Foil experiment discover? 

• Atoms

• Electrons

• A Positively charged nucleus.

Tags

NGSS.HS-PS1-8

Why was Rutherford's model called the "Nuclear Model"?

• Because atoms are like blueberries muffins. With the blue berries being the electrons and the dough being the positively charged particles.

• Because all atoms have a nucleus.