1. Classify the following as an element, compound, homogeneous mixture, or heterogeneous mixture: Salad

2. ______________ is anything that has mass and takes up space

3. A(n) ______________ is a loose collection of substances.

4. __________________ are made up of solutes and solvents.

5. ______________ are pure substances found on the Periodic Table.

6. The smallest, basic unit of matter is a(n) ____________.

7. An ________________ reaction gives off heat.

8. A mixture that is uniform or the same throughout is a _________________ mixture.

9. _______________________ are combinations of two or more elements.

10. An ____________ reaction absorbs heat.