Chapter 2 Review

Physical Science Matter Review
Name ________________________
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
1. Matter is defined as anything that
a. can be seen and touched.
b. has mass and takes up space.
c. can be weighed.
d. contains kinetic or potential energy.
2. A substance that cannot be broken down into simpler substances is
a. a compound.
c. an element.
b. a mixture.
d. an atom.
3. A material that can be represented by a chemical formula is
a. an element.
c. a homogeneous solution.
b. a mixture.
d. a pure substance.
4. Knowing the chemical properties of a substance will tell you how the substance
a. looks.
c. can be broken down into atoms.
b. smells.
d. reacts with other substances.
5. A liquid changes rapidly into a gas at the liquid’s
a. boiling point.
c. melting point.
b. freezing point.
d. condensation point.
6. The process of a liquid becoming a solid is called
a. condensation.
c. evaporation.
b. freezing.
d. melting.
7. Which state of matter has a definite volume, but not shape?
a. plasma
c. liquid
b. gas
d. solid
8. Which state of matter will hold its shape without a container?
a. solid
c. gas
b. liquid
d. plasma
9. The kinetic theory states that the higher the temperature, the faster the
a. particles that make up a substance move.
b. bonds between atoms break down.
c. molecules of gas rush together.
d. lighter particles within a substance clump together.
10. Ice floats in water because it is
a. more dense than water.
b. less dense than water.
c. colder than water.
d. warmer than water.
Completion / Short Answer
Complete each sentence or statement.
11. Identify each of the following materials as an element, a compound/molecule, a homogenous
mixture, or a heterogeneous mixture.
element
Heterogeneous
mix
________________a.
copper
________________d.
apple
Homogeneous
mix salt water
________________b.
________________e.
oxygen
Element
or cmpd/mol
________________c.
carbon
dioxide
________________f.
Compound/molecule
Homogeneous mix gasoline
12. Label the following statements as a physical change (PC), a chemical change (CC), a
physical property (PP) or a chemical property (CP).
________________a.
Physical Property Donuts smell sweet.
________________b.
Physical Change Our big snow pile melted.
________________c.
Chemical change Hydrogen Peroxide bubbles inside a cut.
________________d.
Chemical Property Alcohol has the ability to ignite.
13. Which physical property do all of the following have in common: glass, water, carbon
dioxide, plastic wrap and air? Color (clear, transparent, see-through)
14. A substance that is made of atoms of more than one type bonded together ionically is called a
compound.
15. The density of water is 1.0 g/cm3.
16. A physical property of a material can be observed without chemically changing the material.
17. A chemical change is a change in the composition or makeup of a substance.
18. A change in color during a reaction is often a sign that a chemical change has occurred.
19. The kinetic theory states that the particles in matter are always in motion
20. For any change of state to occur, energy must be transferred.
21. Which method of heat transfer required no physical contact? radiation
22. Which method of heat transfer develops currents due to changes in density? convection
23. Which method of heat transfer were you using in the Mystery Substance Lab when you held
the test tube to cool it faster? conduction
24. Temperature depends on the speed of the particles but heat depends on the speed & mass of
the particles.
25. What are the three types of pure substances and the two types of mixtures from your notes
(not examples)?
Pure Substances – element, compound, molecule
Mixtures – heterogeneous, homogeneous
26. Is crumpling a sheet of paper a physical or chemical change? Why? Physical – it is a change
in shape/size and the chemical makeup remains the same (can reverse physically)
27. Explain why changes of state are physical changes. Because the chemical composition does
not change
28. Which state of matter has particles able to slide past each other, yet stay packed
together?liquid
29. List four of the five evidences that suggest a chemical change is taking place.
Gas produced, light given off, change in temperature, precipitate formed, color change, odor
change
In the following problems list given, formula, setup, & solution, round to the correct precision &
don’t forget units!
30. Calculate the density of a sample of gas with a mass of 30 g and volume of 7500 cm3.
m = 30 g
D = m/v
D=30g/7500cc
D = .004 g/cc
v = 7500 cc
31. Calculate the mass of a gas with a density of 0.0065 g/cm3 and volume of 260 cm3.
D = 0.0065 g/cc
m = D∙v
m = 0.0065 g/cc ∙ 260cc
m = 1.69 g
v = 260 cc
32. Calculate the volume of a liquid with a density of 1.7 g/ml and a mass of 144.5 g.
D = 1.7 g/mL
v = m/D
v = 144.5 g/ 1.7 g/mL
v = 85 mL
m = 144.5 g
33. What is the boiling point of water in Celcius (include units)? 100ºC
34. What is the melting temperature of ice in Celcius (include units)? 0ºC
35. What is the condensation point of steam in Celcius (include units)? 100ºC
36. What is the freezing temperature of water in Celcius (include units)? 100ºC
Heating & Cooling Curve of Mercury
420
Use the heating/cooling curve of mercury provided on the
backside to answer the following questions ( don’t forget the
scale units):
380
340
300
37. What is the boiling point of mercury? 390ºC
260
39. What is the condensation point of mercury? 390ºC
40. What is the freezing point of mercury? -30ºC
Temperature (C)
38. What is the melting point of mercury? -30ºC
220
180
160
120
80
40
0
-40
0
5
10
Time (min)
15
20
Use the data table below to answer the following questions
The students in a class conducted an experiment to test how long it would take for a substance to
move through the different phases of matter. The students placed a test tube of a solid substance
with a thermometer in it over a burner. They recorded the temperature of the substance every
minute until the substance disappeared from the test tube. The following is a data table from
their experiment.
41. What is the independent variable? Time
42. What is the dependent or responding variable? Temp
43. What should be held constant in this experiment? Heat
source, thermometer, sample, etc.
Time
(min)
0
Temp
(K)
268
Time
(min)
10
Temp
(K)
293
Time
(min)
20
Temp
(K)
373
1
271
11
300
21
373
45. What should be done to verify the results of this
experiment? Repeat it
2
273
12
310
22
373
3
273
13
320
23
373
46. From the data and your knowledge of the heating and
cooling curves of substances describe what was
happening to the substance around minutes 2-5?
Melting – temp held constant – lower line
4
273
14
333
24
373
5
273
15
345
25
373
6
274
16
357
26
373
7
275
17
369
27
8
280
18
371
28
9
286
19
372
29
44. What is the control group in this experiment? There is
none
47. What was happening to the substance from minute 20
through minute 26? Boiling – temp held constant –
upper line
48. Why did they stop taking data after minute 26? The
substance disappeared (evaporated) from the tube
49. Using the given data, infer what the condensation point temperature would be. 373 K
50. Using the data, infer what the freezing point temperature would be 273 K
E.C. What substance is this? Water