Homework Test Monday Wednesday, April 17, 2019 B-Day

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Presentation transcript:

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

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

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

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

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

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

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