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Unit One Optional Review Practice

Total questions: 91

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

Which type of matter is made of only one type of atom and can be found on the periodic table?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

2.

Which type of matter has two or more distinct substances that can be separated by physical means. The distinct substances are not distributed in a uniform fashion.

a)

Homogeneous Mixture

b)

Diatomic Element

c)

Compound

d)

Heterogeneous Mixture

3.

Which type of matter is two or more substances that can be separated by physical means? It has a uniform appearance (i.e. one spoonful would be identical to the next spoonful).

a)

Heterogeneous Mixture

b)

Compound

c)

Pure Substance

d)

Homogeneous Mixture

4.

Which type of matter is made up of 2 or more different types of atom chemically combined (also known as "bonded"). They cannot be separated by physical changes.

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

5.

Which type of matter is made of only 1 type of particle. They can be either elements or compounds.

a)

Elements

b)

Compounds

c)

Pure Substance

d)

Mixture

6.

Which type of matter is two of the same atoms bonded together? Still considered a type of element. (Example: O2: oxygen gas)

a)

Diatomic Molecule

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

7.

Which type of matter can also be called a SOLUTION

a)

Diatomic Molecule

b)

Compound

c)

Homogeneous Mixture

d)

Pure Substance

8.

How would you classify the matter pictured?

a)

Compound

b)

Diatomic Element

c)

Mixture of Elements

d)

Mixture of Compounds

9.

How would you classify the matter pictured?

a)

Diatomic Element

b)

Compound

c)

Mixture of Elements

d)

Mixture Compounds

10.

How would you classify the matter pictured?

a)

Compound

b)

Element

c)

Mixture of Elements and Compounds

d)

Mixture of Compounds

11.

How would you classify the matter pictured?

a)

Element

b)

Diatomic Element

c)

Compound

d)

Mixture of Elements

12.

How would you classify the matter pictured?

a)

Mixture of Compounds

b)

Mixture of Elements

c)

Mixture of Compounds and Elements

d)

Element

13.

How would you classify the matter pictured?

a)

Element

b)

Compound

c)

Mixture of Compounds

d)

Mixture of Elements

14.

How would you classify the matter pictured?

a)

Diatomic Element

b)

Compound

c)

Mixture of Compounds

d)

Mixture of Compounds and Elements

15.

How would you classify the matter pictured?

a)

Element

b)

Mixture of Elements

c)

Compound

d)

Mixture of Compounds

16.

How would you classify the matter pictured?

a)

Mixture of Compounds

b)

Mixture of Elements

c)

Mixture of Compounds and Elements

d)

Compound

17.

How would you classify a solid Aluminum (Al) pop tabs?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

18.

How would you classify Chalk (Chalk has a chemical formula: CaCO3)

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

19.

How would you classify black coffee?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

20.

How would you classify helium (He)

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

21.

How would you classify Carbon Dioxide (CO2)

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

22.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
23.
A mixture that is so evenly mixed you can't see the parts.  Such as Kool-Aid
a)
Homogeneous Mixture
b)
Heterogeneous Mixture
c)
Pure Substance
24.
Which one of these pictures represents a mixture? 
a)
1
b)
2
c)
3
d)
1, 2 and 3
25.
Which one of these pictures represents a pure substance? 
a)
1 and 2
b)
1 and 3
c)
2 and 3
d)
1, 2 and 3
26.

True or False: Matter is divided into two main groups: pure substances and mixtures.

a)

True

b)

False

27.

True or False: The two types of pure substances are elements and compounds.

a)

True

b)

False

28.

How many sig figs are in the following measurements?

10 L

a)

1

b)

2

c)

3

d)

0

29.

How many sig figs are in the following measurements?

907.0 km

a)

1

b)

2

c)

3

d)

4

30.

How many sig figs are in the following measurements?

2.4050 X 10-3

a)

1

b)

2

c)

3

d)

4

e)

5

31.

How many sig figs are in the following measurements?

300 100 000 g

a)

0

b)

2

c)

4

d)

9

32.

Round each number to five significant figures.

907.0759

a)

907.08

b)

907.07

c)

907.076

d)

908

33.

Round each number to 3 significant figures.

24 501 759

a)

245

b)

245000

c)

24600000

d)

2.45 x 107

34.

Complete the following calculations. Round off your answers as needed.

52.6 g + 309.1 g +77.214 g

a)

438.9

b)

438.914

c)

438.91

d)

4.38914 x 102

35.

Determine the number with the fewest significant figures.

a)

5.78 910 x 103 g

b)

5000

c)

12.90 s

d)

0.121 012 L

36.

The standard temperature of boiling water is 100oC. Which thermometer is the most accurate and precise?

a)

1

b)

2

c)

3

d)

4

e)

None of the thermometers are accurate and precise.

37.

Complete the following calculations. Round off your answers as needed.

245.01 km x 2.1 km

a)

5.14521 x 102

b)

510

c)

514

d)

514.521

38.
Calculate 0.020 cm x 50 cm x 11.1 cm and give your answer with the correct number of significant figures.
a)
10 cm3
b)
11.1 cm3
c)
11 cm3
d)
11. cm3
39.
Which of the following numbers have four significant figures?
a)
56.75 g
b)
40.01 g
c)
0.6000 g
d)
all of the choices
40.

How many significant figures: 450 m

a)

3

b)

2

c)

1

d)

0

41.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
42.
Calculate 7.987 m - 0.54 m and give your answer with the appropriate number of significant figures.
a)
7.45 m
b)
7.447 m
c)
7.4 m
d)
7.5 m
43.

What is the density of a block of marble that occupies 310 cm3 and has a mass of 853 g? (Density is found by dividing mass by volume)

a)

0.36 g/cm3

b)

0.363 g/cm3

c)

2.75 g/cm3

d)

2.8 g/cm3

44.
When a measurement is repeatable and consistent it is said to have...
a)
High precision
b)
Low precision
c)
High accuracy
d)
Low accuracy
45.

How close a measurement is to the accepted value (or known value) is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

46.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
47.
?
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
48.

The deer population is estimated to be 17,600 in northern Illinois, but the actual count was 21,300. What is the percent error of the estimate?

a)
21%
b)
17.37%
c)
17.4%
d)
21.02%
49.
volume?
a)
48 mL
b)
48.2 mL
c)
48.25 mL
d)
4 mL
50.
Volume?
a)
63.5 mL
b)
63 mL
c)
63.55 mL
d)
6 mL
51.
a)
Student A
b)
Student B
c)
Student C
d)
Cannot be determined
52.
a)
Student A
b)
Student B
c)
Student C
d)
Cannot be determined
53.

Properties that change based on the amount of the substance is

a)

Extrinsic Properties

b)

Intrinsic Properties

54.

Properties that do not change based on the amount of the substance is

a)

Extrinsic Properties

b)

Intrinsic Properties

55.

Mass is an example of an

a)

Extrinsic Property

b)

Intrinsic Property

56.

Density is an example of an

a)

Extrinsic Property

b)

Intrinsic Property

57.

Identify the extrinsic property listed below.

a)

length

b)

taste

c)

density

d)

boiling point

58.

Use the information provided to determine which type of physical property is represented.

a)

intrinsic property

b)

physcial property

c)

associative property

d)

ccommunitive property

59.
Which of the following tells you that a chemical change may have occurred?
a)
Change Shape
b)
Melting
c)
Vaporizing
d)

an unexpected change in color

60.
Is wood burning a physical or chemical change?
a)
Physical 
b)
Chemical
61.
Is Gatorade powder dissolving in water physical or chemical change?
a)
Physical 
b)
Chemical
62.

How many elements are in this formula. NaCl

a)

1

b)

2

c)

3

d)

4

63.

What is the difference between a compound and an element.

a)

Elements are made of 2 different parts and a compound is made of one.

b)

Elements are made from parts of the periodic table and the Compounds are found on the periodic table.

c)

Elements are found on the periodic table and compounds are made of different elements bonded together.

d)

Elements are found on the periodic table, and compounds are found at the bottom of the table.

64.
What is the definition of chemical change?
a)
any change that results in the formation of new chemical substances. 
b)
changing of only the appearance of the object
c)
matter cannot be created or destroyed, only change form
d)
changes affecting the form of a chemical substance, but not its chemical composition.
65.
Define a physical property.
a)
Observations made or measured using your senses, without changing the identity of the substance
b)
Can only be measured using specific science equipment
c)
Only observed in situations where the identity of the object is changing
d)
Only measurable if the identity of the object changes  
66.
What kind of properties can only be observed when a substance changes into a different substance?
a)
physical properties
b)
chemical properties
c)
liquid properties
d)
real properties
67.
Kim puts an ice cube in a beaker and it melts. This is a good example of:
a)
a physical change.
b)
a chemical change.
c)
an experiment.
d)
an analysis.
68.

Adding baking soda and vinegar together and it bubbles as it creates carbon dioxide gas..

a)
Chemical
b)
Physical
69.
What is the Volume in the graduated cylinder?
a)
63.5 mL
b)
63 mL
c)
63.55 mL
d)
6 mL
70.
Where do we read the level of liquid?
a)
The highest point the liquid touches
b)
The bottom of the meniscus
c)
Half way between, we make an educated guess and round it
d)
The top of the meniscus
71.
Which of these could be a correct measurement for the volume shown?  Click on this image for a better look.
a)
40 mL
b)
43 mL
c)
43.0 mL
d)
43.00 mL
72.
Which is the correct measurement of the red line?  
a)
9 cm
b)
8.5 cm
c)
8.50 cm
d)
8.1 cm
73.

If the exponent on the power of 10 is a positive number...

a)

you will get a large number that is greater than 1

b)

you will get a smaller number that is less than 1

74.

Which of the following numbers is written in correct scientific notation?

a)

64.2⋅10264.2\cdot10^2  

b)

6.42⋅1036.42\cdot10^3  

c)

0.642⋅1040.642\cdot10^4  

d)

62406240  

75.

Which of these numbers is the smallest?

a)

3.5 x107

b)

3 x108

c)

5 x107

d)

5.5 x106

76.

To compare two numbers that are in scientific notation, first compare the​ (a)   . If they are the same, then compare the​ (b)   .​

Choose from the below words
exponents
decimals
77.

Which of these numbers is the greatest?

a)

9 x 109

b)

8.1 x1010

c)

9.02 x109

d)

6.35 x1010

78.

How is the following number written in scientific notation?

450,000

a)

4.5  x  105

b)

45  x  105

c)

4.5  x  104

d)

4.5  x  106

79.

How is the number below written in scientific notation?

0.000398

a)

39.8  x  10-5

b)

3.98  x  10-5

c)

3.98  x  10-4

d)

39.8  x  10-6

80.

Which of the following is the correct way to write 3.97  x  10-2 in standard form?

a)

0.000397

b)

0.0397

c)

0.0000397

d)

0.397

81.

Which is the correct way to write the number 3.5 x 106  in standard notation?

a)

0.0000035

b)

35,000,000

c)

3,500,000

d)

0.00000035

82.
Multiply:
(3.4 x 105)(1.2 x 10-3)
a)
4.08 x 10-8
b)
4.8 x 102
c)
4.08 x 102
d)
4.08 x 10-15
83.
Divide:
(6.9 x 107) / (2.3 x 10-3)
a)

3.0 x 1010

b)

3.0 x 104

c)

3.0 x 10-4

d)

3.0 x 10-11

84.
Solve:
(2.1×10​2​​) × (3.0×10​4)
a)
5.1 x 102
b)
6.3 x 106
c)
5.1 x 106
d)
6.3 x 108
85.

Multiply:

(3.4 x 105)(1.2 x 10-3)

a)

4.08 x 10-8

b)

4.8 x 102

c)

4.1 x 102

d)

4.08 x 10-15

86.
Light travels at a rate of 186,000 miles per second.  Write this number in scientific notation.
a)
1.86 x 105
b)
1.86 x 104
c)
18.6 x 104
d)
186 x 103
87.

The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

a)

15.79%

b)

18.75%

c)

2.25%

d)

18%

88.
A set of data are all close to each other, and they are close to the actual value.  This set of data can be described as...
a)
accurate
b)
precise
c)
both precise and accurate
89.

How many significant figures should your answer have for the following multiplication problem 19.10 X 18.0 X 22

a)

2

b)

4

c)

3

d)

none

90.

When reacting Na with Cl2, we calculated that the theoretical yield should be 13 grams. Our actual yield was 12.5 grams. What is the percent yield?

a)

90.4%

b)

104%

c)

96.15%

d)

1.04%

91.
In a lab, a scientist calculate he should produce 12.3 grams of product in his experiment. When he is finished collecting his product it weighs 10.1 grams. What is his percent yield?
a)
82%
b)
0.82%
c)
10.1 %
d)
100%

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