Pre-Test
Three subatomic particles.
What are protons, neutrons, and electrons?
Which science thought of the atomic theory?
What is Dalton?
What did JJ Thomson find?
The electron
What did Rutherford find?
That protons were in a central location called the nucleus
How are Rutherford's findings different from JJ Thomson?
JJ thought it was just positive juice, where Rutherford located the positive charge in the nucleus
What are the four parts of the atomic theory?
1. Everything is made of atoms
2. Elements of the same kind have identical atoms, elements of different kind have different atoms
3. During chemical reactions, atoms rearrange instead of disappearing
4. Compounds are atoms in whole number ratios