Name: ______Pretest: _____/50

Posttest: _____/50

Pretest Ch 2 & 3.1: Matter

Vocab: match the definition on the left with the wordon the right.

1. ______a chemical process in which heat is A. atom

given off, it gets colderB.boiling point

2. ______going from a liquid to a solid, C.compound

aka freezingD.condensation

3. ______smallest amount of an element with E.density

all the properties of that elementF.deposition

4. ______temperature at which something goes G. element

from a solid to liquid or back H.endothermic

5. ______going from a gas directly to a solid, the I.evaporation

opposite of sublimationJ.exothermic

6. ______mass per unit volume, how tightly packed K.matter

atoms or molecules areL.melting

7. ______anything that has mass and takes up M. melting point

spaceN.mixture

8. ______two or more atoms chemically combinedO.molecule

P. plasma

9. ______temperature at which something goesQ.pure substance

from a liquid to a gas, or vice versaR. reactivity

10. ______two or more substances not chemically S.solidification

combined, easily separated T.sublimation

11. ______a measure of how well one substance

chemically combines with another

12. ______a substance made of all the same element or compound

13. ______process where something goes from a soliddirectly to a gas, e.g. dry ice

14. ______a state of matter where electrons are free tomove around, like a gas with

an electric charge

15. ______all one kind of atom

16. ______process of going from a gas to a liquid

17. ______smallest amount of a compound with all the characteristics of that

compound

18. ______a chemical process where heat is absorbed,it gets warmer

19. ______process where a substance goes from a solid to a liquid

20. ______process where a substance goes from a liquid to a gas

Define these two terms.

21. Homogeneous:

22. Heterogeneous:

Identify each of the following mixtures as...

A. HomogeneousB. Heterogeneous

23. ______rocks and sand in a jar

24. ______kool-aid

25. ______fresh-squeezed orange juice

Define these two terms.

26. Physical property:

27. Chemical Property:

Identify each of the following as...

A. Physical PropertyB. Chemical Property

28. ______Density

29. ______Solubility (how well something dissolves)

30. ______Reactivity (how well something reacts with something else)

Define these two terms.

31. Physical Change:

32. Chemical Change:

Identify each of the following as...

A. Physical Change B. Chemical Change

33. ______Ripping a piece of paper in half

34. ______Burning the piece of paper

35. ______Dissolving sugar in water

36. – 38. The Kinetic Theory of matter states three things. They are:

39. Draw a graph of the temperature of water as it starts as ice, melts, stays as

water, boils and becomes a gas.

40. – 41. Is the process named above exothermic or endothermic? Explain.

42. You’re adding energy as the substance gets warmer. When it’s a liquid, you can

tell this because the temperature is rising. Describe what the energy is doing to the molecules as it stays a liquid.

43. If you keep adding energy when it boils, the temperature does not change? Why

not? Describe what the energy is doing to the molecules as it boils.

44. - 47. Name the FOUR states of matter and describe what the molecules in them

are like(spacing/motion).

48. ______A block of lead which has a mass 450.78 grams is measured to

be 6.11 cm3. What is the density of lead? Show your work! D=m/V

49. ______A rock has a mass of 65 grams and a density of 8.3 g/mL. How

big isthe rock (volume)? Show your work! D=m/V

50. ______A piece of plastic (d = .88 g/ml) is placed in a density column

containing water, cornoil (d = 0.9 g/ml), mercury (d = 13.6 g/ml), and glycerol (d = 1.26 g/ml). How many layers of liquid will the plastic fall through before it stops? Explain why.