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.