1. Homework Test Monday Wednesday, April 17, 2019 B-Day
Objective: YWBAT describe characteristics of elements, mixtures, and compounds.
Drill: Describe the differences between chemical and physical changes. Give an example for each.
Homework
Test Monday

2. Chemical changes
One or more substances are changed into entirely new substances with NEW properties
Cannot be reversed using physical means
Iron and oxygen forming rust

3. Physical Change
A change that affects one or more physical propeties (senses) of a substance
Many physical changes are easy to undo
Changes of state are physical changes

4. The first day of spring is March 20.
Did you know…?
The first day of spring is March 20.

5. Today’s Activities Drill Review Study Guide
Mixtures: Together but Separate
Conclusion

6. What are the three main properties of a compound?
Closure
What are the three main properties of a compound?

7. Conclusion Answer Components take on new properties
There IS a definite ratio of the components
Can be broken down by chemical means