Atomic Models

Goal:
Cite evidence from theories to construct a model of the atom that includes the mass, charge, and relative location of the subatomic particles.

Agenda:
Warmup
The Size of Atoms

How Do We Learn About Something So Small?
Models Card Sort
Socrative Exit Ticket

Warmup
I will pass back your exit tickets from yesterday. Flip them over. On the back draw a particle and formula model for the following:

1. If the penny and zinc turned into gold.
2. If the penny and zinc did not turn into gold. 

Then take the Socrative quiz. 

The Size of Atoms

Watch this video and consider the following questions:

• What do atoms look like?
• How big are atoms?

How Do We Learn About Something So Small?
Play with the simulation below. Knowing that alpha particles are positively charged, what can we infer about the Rutherford Atom?



Models Card Sort

1. Take out all of the pictures of atomic models. Put the pictures of the atomic models in the order you think they were discovered. What criteria did you use to put them in this order.
2. Take out all of the evidence cards. Match the pieces of evidence to the model they support. 
3. Take out all of the claim cards. Match the claims to the evidence.
4. Take a photo.

Socrative Exit Ticket

Teacher's question: How did our understanding of the atom change with new evidence? What did scientists discover?