9X4 Atomic Structure review

9X4 Atomic Structure review

Open Ended

name the three main parts that make up a atom

and now let's dig a bit deeper...

Multiple Choice

Which part of the atom has a positive charge + ?

• proton

• neutron

• electron

Multiple Choice

Which part of the atom has a negative charge - ?

• proton

• neutron

• electron

How do we know what the atom is made of?

We need to travel back 100 years...

To JJ Thompson's plum pudding model of the atom

Can you see how it is different from the diagram we saw earlier?

So how did we get from there to our current understanding?

By shooting alpha particles at it.....

see

https://phet.colorado.edu/sims/html/rutherford-scattering/latest/rutherford-scattering_en.html