3. Read each description and determine whether it is a pure substance or mixture. Then further classify the matter as element, compound, homogeneous mixture, or heterogeneous mixture.
Description Pure Substance or Mixture? Classification? (Element, Compound, Homogenous mixture or heterogeneous mixture)
1. Chocolate syrup is added to milk and stirred
2. Copper metal (used to make wires)
3. Sand is added to water
4. Distilled water
5. Tap water
6. Diamond
7. Table sugar
8. Sugar added to a cup of coffee and stirred
9. Kool-aid is added to water
10. Coca-cola
11. Helium gas (used to inflate a balloon)
12. Mercury metal (used in old thermometers)
13. Hydrogen gas (an explosive gas)
14. Trail mix (peanuts, pretzels and m&m's)
15. The air we breathe
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