Name: ________________________
Period#______ Date: ________________________
7th Grade Unit 1 Review
1. Potassium is an element that is in Bananas. Is Potassium considered a Pure
Substance or Mixture?
2. What is the difference between a Pure Substance and a mixture?
3. A lava lamp mixture would be classified as what type of mixture? Explain
your answer.
4. What is the difference between an element and a compound?
5. How can you identify a chemical symbol?
6. What two parts make up a chemical formula?
Name: ________________________
Period#______ Date: ________________________
7. Explain the difference on how an element is represented and a compound
is represented?