Memory Anchor:

• The difference between chemical and physical changes.

Super Challenge:

Stretch:

Challenge:

Key Questions:

1. What is a physical change?
   • Physical changes are changes of state.
2. What happens to the particles in a physical change?
   • the difference between chemical and physical changes
3. When do chemical changes occur?
   • Chemical changes occur when the make up of individual Particles change.
4. What happens to the atoms in a chemical reaction?
   • chemical reactions as the rearrangement of atoms
5. What happens to atoms in chemical reactions?
   • Chemical reactions result from the rearrangement of atoms
6. What are reactants?
   • Chemicals that react are call Reactants.
7. What are products?
   • Chemicals that are produce are call Products.
8. What is the difference between a chemical and a physical change?
   • The difference between chemical and physical changes.