Science Olympiad Miscellaneous Worksheet-22

Science Olympiad Miscellaneous Worksheet-22

True or False.

1. Because solubility is a characteristic property of matter, it can be used to help identify a substance.

2. Secondary consumers are also known as herbivores.

3. Tides are the rise and fall of large bodies of water.

4. A solute is a mixture in which particles can be seen and easily separated.

5. The particles in a suspension are larger than the particles in a solution but are still too small to be seen easily.

6. The periodic table reveals the arrangement of electrons.

7. Changes in matter can only be described in terms of physical changes.

8. Only hunters consume the tertiary consumers of the deciduous forest.

9. All elements have the same number of protons and neutrons.

10. All chemical reactions require a certain amount of activation energy to start.

11. In an open ocean, a tsunami can travel as fast as a jet flies!

12. In the deep sea, a tsunami's height can be only about three feet tall.

13. Chemical equations use chemical formulas and other symbols instead of words to summarize a reaction.

14. Occasional open areas of the deciduous forest provide microclimates for newts, frogs and fishes.

15. The three elements in a carbohydrate compound are carbon, hydrogen, and nitrogen.

16. Fuel, oxygen, and heat are the three necessary things to start a fire.

17. There are no factors that affect rates of reaction.

18. Ionic bonds form as a result of the attraction between negative ions.

Answer Key:

1. True

2. False

3. True

4. False

5. False

6. True

7. False

8. True

9. False

10. True

11. True

12. True

13. True

14. True

15. False

16. True

17. False

18. False