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Unit 1 Review

Total questions: 80

Worksheet time: 49mins

Name
Class
Date
1.
Physical or chemical change?
cutting a piece of paper in half
a)
Physical
b)
Chemical
2.
Physical or chemical change?
sugar is dissolved into hot tea
a)
Physical
b)
Chemical
3.
Physical or chemical property?
density
a)
Physical
b)
Chemical
4.
Over time, pure silver that is exposed to air turns a strange greyish brown color. This is an example of a ________________ change. 
a)
Physical
b)
Chemical
5.
A change in which the form or shape of a substance changes but the chemical makeup of the substance remains the same.
a)
chemical change
b)
reaction
c)
physical change
d)
solution
6.
Density
a)
Physical Property
b)
Chemical Property
7.
Blue Color
a)
Physical Property
b)
Chemical Property
8.
Flammability (burns)
a)
Physical Property
b)
Chemical Property
9.
Solubility (dissolves)
a)
Physical Proeprty
b)
Chemical Property
10.
Reacts with acid
a)
Physical Property
b)
Chemical Property
11.
Melting point
a)
Physical Property
b)
Chemical Property
12.
Reacts with water
a)
Physical Property
b)
Chemical Property
13.
Hardness
a)
Physical Property
b)
Chemical Property
14.
A student removes a loaf of bread hot from the oven. The student cuts a slice off the loaf and spreads butter on it. 
a)
Physical Change
b)
Chemical Change
15.

A physical property that measures mass per unit volume

a)

density

b)

flammability

c)

physical property

d)

element

e)

reactivity

16.

characteristic/trait that can be seen through direct observation of a substance.

a)

mixture

b)

physical property

c)

physical change

d)

chemical property

e)

chemical change

17.

an example of a physical change

a)

flammability

b)

fireworks exploding

c)

rust

d)

melting

18.

has a definite volume but takes the shape of its container

a)

solid

b)

liquid

c)

gas

d)

plasma

e)

Bose-Einstein condensate

19.

the ability to burn

a)

physical change

b)

conductivity

c)

elasticity

d)

flammability

e)

reactivity

20.

Anything that has mass and volume.

a)

solid

b)

liquid

c)

gas

d)

matter

e)

mixture

21.

an example of a chemical change

a)

breaking glass

b)

boiling water

c)

stretching copper into wire

d)

rusting

22.

a homogenous mixture

a)

solid

b)

solution

c)

matter

d)

compound

23.

transforms one type of matter into another type of matter

a)

physical change

b)

physical property

c)

chemical change

d)

chemical property

24.

a mixture that has the same composition throughout the entire substance

a)

heterogenous mixture

b)

homogenous mixture

c)

pure substance

d)

matter

25.

observed when a substance changes into a new substance

a)

physical property

b)

chemical property

c)

physical change

d)

chemical change

26.

a change to a substance that does NOT change the identity of the substance

a)

physical change

b)

physical property

c)

chemical change

d)

chemical property

27.

used to observe and describe matter

a)

physical property

b)

physical change

c)

chemical property

d)

chemical change

28.

something that will always have the same composition

a)

matter

b)

compound

c)

pure substance

d)

mixture

e)

solution

29.

matter that has a fixed shape and volume (rigid)

a)

solid

b)

liquid

c)

gas

d)

plasma

e)

Bose-Einstein condensate

30.

a substance made from two or more different elements

a)

matter

b)

mixture

c)

compound

d)

pure substance

e)

solution

31.

matter that has no fixed volume or shape - it takes the shape and volume of its container

a)

solid

b)

liquid

c)

gas

32.

something that has a variable composition

a)

matter

b)

mixture

c)

compound

d)

pure substance

e)

solution

33.

a substance that cannot be broken down into other substances

a)

matter

b)

mixture

c)

element

d)

solid

e)

solution

34.

a mixture that has a different composition throughout the substance

a)

heterogenous mixture

b)

compound

c)

homogeneous mixture

d)

element

35.

How many significant figures are in the number? 2804 m

a)

3

b)

4

c)

5

d)

unknown

36.

How many significant figures are in the number? 75,000 m

a)

2

b)

3

c)

5

d)

unknown

37.

How many significant figures are in the number? 4.06 x 10-5 m

a)

3

b)

7

c)

5

d)

unknown

38.

How many significant figures are in the number? 0.003068 m

a)

6

b)

5

c)

4

d)

unknown

39.

What is the correct answer to: 6.201 cm + 7.4 cm + 0.68 cm +12.0 cm =

a)

26.281

b)

26.28

c)

26.2

d)

26.3

40.

What is the correct answer for: 12.00 m +15.001m =

a)

27.001

b)

27.00

c)

27.0

d)

27

41.

What is the correct answer for: 1.31 cm x 2.3 cm

a)

3.013

b)

3.01

c)

3.02

d)

3.0

42.

What is the correct answer for: 20.2 cm ÷ 7.41 s

a)

2.726045884

b)

2.72604

c)

2.73

d)

2.7

43.

How many significant figures are in this number: 47.00

a)

2

b)

3

c)

4

d)

5

44.

How many significant figures are in this number: 0.0905

a)

1

b)

3

c)

4

d)

6

45.

How many significant figures are in this number: 0.0008

a)

1

b)

2

c)

4

d)

5

46.

What is 78.5 rounded to one significant figure?

a)

79

b)

78.5

c)

70

d)

80

e)

78

47.

Round 1,296,717 to 3 significant figures

a)

1,290,000

b)

1,296,000

c)

1,297,000

d)

1,300,000

e)

1.30 x 106

48.

Round 509.96 to 4 significant figures

a)

509.9

b)

509.0

c)

510.0

d)

510

49.

What is 0.658 rounded to 1 significant figure?

a)

0

b)

0.66

c)

0.7

d)

0.658

e)

1

50.

What is 375.6523 to four significant figures?

a)

375.0

b)

375.00

c)

375.7

d)

375.6

51.

Round the following value to one significant figure...


15

a)

10

b)

20

c)

100

d)

2

52.

Round the following value to one significant figure...


236

a)

200

b)

230

c)

240

d)

300

53.
Round 1047.78 to three sig figs
a)
104
b)
105
c)
1050
d)
1050.00
54.

Round 1047.78 to three significant figures.

a)

104

b)

105

c)

1050

d)

1050.00

55.

What is the correct answer for: 1.31 cm x 2.3 cm

a)

3.013

b)

3.01

c)

3.02

d)

3.0

56.

What is the correct answer for: 20.2 cm ÷ 7.41 s

a)

2.726045884

b)

2.72604

c)

2.73

d)

2.7

57.
Calculate 923 g ÷ 20312 cm3 and give your answer with the correct number of significant figures.
a)
0.04 g/cm3
b)
0.045 g/cm3
c)
0.0454 g/cm3
d)
0.05 g/cm3
58.
There are __?__ significant digits in the number 90,000.00
a)
1
b)
2
c)
5
d)
7
59.
Calculate 5.50 cm + 5.50 cm and give your answer with the appropriate number of significant figures.
a)
11 cm
b)
11.0 cm
c)
11.00 cm
d)
11.000 cm
60.
How many significant figures will be in the answer to the following question:
7.62 x 6.98 x 3.2645
a)
1
b)
2
c)
3
d)
4
61.

Is the following a pure substance or mixture? Baking Soda ( NaHCO3NaHCO_3 ) 

a)

pure substance

b)

mixture

62.

Is the following a pure substance or mixture? Trimix (oxygen, nitrogen, and helium) found in a scuba tank

a)

pure substance

b)

mixture

63.

Is the following an element or compound? A silicon (Si) chip.

a)

element

b)

compound

64.

Is the following an element or compound? hydrogen peroxide (H2O2)

a)

element

b)

compound

65.

Is the following a homogeneous or heterogeneous mixture? coffee mixed with cream and sugar

a)

homogeneous mixture

b)

heterogeneous mixture

66.

Is the following homogeneous or heterogeneous? Fruit salad

a)

homogeneous mixture

b)

heterogeneous mixture

67.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

68.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

69.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

70.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

71.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

72.

How would you classify this image?

a)

homogeneous mixture

b)

heterogeneous mixture

73.

How would you classify this image?

a)

homogeneous mixture

b)

heterogeneous mixture

74.

Is the following a pure substance or mixture? Brass (Cu and Zn)

a)

pure substance

b)

mixture

75.

How would you classify this image?

a)

homogeneous mixture

b)

heterogeneous mixture

76.

What do the graduations go up by on this GC?

a)

0.1 mL

b)

0.2 mL

c)

0.5 mL

d)

1 mL

77.

What is your measurement?

a)

18.60 mL +/- 0.01 mL

b)

18.450 mL +/- 0.001 mL

c)

18.45 mL +/- 0.01 mL

d)

18.5 mL +/- 0.1 mL

78.

What is the uncertainty of this graduated cylinder?

a)

+/- 0.5 mL

b)

+/- 0.05 mL

c)

+/- 1 mL

d)

+/- 10 mL

79.

What is your measurement?

a)

50.525 mL +/- 0.001 mL

b)

50.6 mL +/- 0.5 mL

c)

50 mL +/- 1 mL

d)

50.52 mL +/- 0.05 mL

80.
a)

8.1 mL +/- 0.5 mL

b)

8 mL +/- 1 mL

c)

8.15 mL +/- 0.05 mL

d)

8.150 mL +/- 0.005 mL

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