Ch 1: Chemistry and Measurement

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Chemistry
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Chapter 1 multiple choice exam.
updated 5 years ago by rahel
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chemistry, science
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1

1) In the following list, only __________ is not an example of matter.
A) light
B) elemental phosphorus
C) dust
D) table salt
E) planets

A

2

2) What is the physical state in which matter has no specific shape but does have a specific volume?
A) liquid B) solid C) ice D) gas E) salts

A

3

3) A combination of sand, salt, and water is an example of a __________.
A) pure substance
B) homogeneous mixture
C) compound
D) solid
E) heterogeneous mixture

E

4

4) Which one of the following has the element name and symbol correctly matched?
A) P, potassium
B) Mg, manganese
C) Sn, silicon
D) Ag, silver
E) C, copper

D

5

5) Which one of the following is a pure substance?
A) salt water
B) concrete
C) milk
D) wood
E) elemental copper

E

6

6) Sn is the symbol for the element __________

Tin

7

7) The symbol for the element magnesium is __________.
A) Rb B) Si C) Mg D) Mn E) Ne

C

8

8) If matter is uniform throughout and cannot be separated into other substances by physical means, it is
__________.
A) a compound
B) either an element or a compound
C) a homogeneous mixture
D) an element
E) a heterogeneous mixture

B

9

9) Homogeneous mixtures are also known as __________.
A) elements B) solutions C) compounds D) solids E) substances

B

10

10) Which of the following is an illustration of the law of constant composition?
A) Water is 11% hydrogen and 89% oxygen by mass.
B) Water and salt have different boiling points.
C) Water is a compound.
D) Water can be separated into other substances by a chemical process.
E) Water boils at 100eC at 1 atm pressure.

A

11

11) Which one of the following is not a physical property of water?
A) It boils at 100°C at 1 atm pressure.
B) It freezes at 0°C at 1 atm pressure.
C) It reacts rapidly with potassium metal to form potassium hydroxide.
D) It is clear and colorless.
E) Water exists in solid, liquid and gaseous forms.

C

12

12) Of the following, only __________ is a chemical reaction.
A) melting of lead
B) tarnishing of silver
C) crushing of stone
D) dissolving sugar in water
E) dropping a penny into a glass of water

B

13

13) Which one of the following is an intensive property?
A) mass B) volume C) heat content D) temperature E) amount

D

14

14) Of the following, only __________ is an extensive property.
A) density
B) boiling point
C) freezing point
D) mass
E) pressure

D

15

15) Which of the following are chemical processes?
1. rusting of a nail
2. freezing of water
3. decomposition of water into hydrogen and oxygen gases
4. compression of oxygen gas
A) 2, 3, 4 B) 1, 2 C) 1, 4 D) 1, 3, 4 E) 1, 3

E

16

16) Which of the following is a chemical property of sodium chloride?
A) It is a solid at room temperature.
B) It can be decomposed into sodium metal and chlorine gas.
C) It is not significantly compressible.
D) It melts at a high temperature.
E) It dissolves in water.

B

17

17) Intensive properties __________ depend on the amount of matter present. Extensive properties __________
depend on the amount of matter present.
A) do, sometimes
B) don't, don't
C) don't, do
D) do, do
E) do, don't

C

18

18) Of the objects below, __________ is the most dense.
A) an object with a volume of 3.91 x 10-24 nm3 and a mass of 7.93 x 10-1 ng
B) an object with a volume of 13 dm3 and a mass of 1.29 x 103 g
C) an object with a volume of 139 mL and a mass of 93 g
D) an object with a volume of 0.00212 m3 and a mass of 4.22 x 104 mg
E) an object with a volume of 2.5 L and a mass of 12.5 kg

A

19

19) The temperature of 25eC is __________ in Kelvins.
A) 166 B) 248 C) 103 D) 138 E) 298

E

20

20) Express the temperature, 422.35 K, in degrees Celsius and in degrees Fahrenheit.
A) 149.20°C, 300.56°F
B) 50.89°C, 324.04°F
C) 22.78°C, 98.60°F
D) 695.50°C, 354.39°F
E) 792.23°C, 519.08°F

A