Elements, Compounds and Mixtures
1. How did you differentiate between an element and a compound? Give an example of
each.
2. How do you distinguish between a homogeneous mixture and a heterogeneous
mixture? Give an example of each.
3. What is the difference between a molecule and a mixture? Give an example of each.
4. What is the difference between a solution, colloid and a suspension? Give an
example of each.
5. Explain the difference between a solute and a solvent. Give an example of a solution,
then identify its solute and its solvent
1. Read each description and determine whether it is a pure substance or mixture. Then further
classify the matter (element, compound, homogeneous mixture, heterogeneous mixture)
Description
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 (no minerals)
5. Tap water (has minerals)
6. Coal (made of carbon)
7. Limestone (CaCO)
8. Table 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
16. Concrete
17. Pacific Ocean
18. Soil
19. Aluminum
20. Orange juice with pulp
21. Baking soda (NaHCO)
Molecule
or Mixture?
Classification?