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Homework #24: Review Assignment #1

Total questions: 144

Worksheet time: 5hrs 52mins

Name
Class
Date
1.

substance that cannot be broken down into a simpler substance

a)

chemical

b)

element

c)

compound

d)

mixture

2.

basic particle from which all elements are made

a)

atom

b)

molecule

c)

element

d)

compound

3.

force of attraction between atoms

a)

atom bond

b)

compound

c)

chemical bond

d)

molecule

4.

group of two or more atoms held together by chemical bonds

a)

atom

b)

molecule

c)

chemical bond

d)

compound

5.

substance made of two or more elements that are chemically combined is a set ratio

a)

compound

b)

chemical formula

c)

molecule

d)

atom

6.

What shows the elements in the compound and the ratio of atoms

a)

chemical formula

b)

chemical bond

c)

molecule

d)

mixture

7.

What holds the hydrogen and oxygen atoms together in a water molecule?

a)

formulas

b)

compounds

c)

mixtures

d)

chemical bonds

8.

How many atoms are in NH3?

a)

2

b)

3

c)

4

d)

5

9.

How many atoms of Oxygen are in O2?

a)

1

b)

2

c)

3

d)

4

10.

A _________ is made of two or more substances that are together in the same place but their atoms are NOT chemically bonded.

a)

compound

b)

mixture

c)

substance

d)

filtration

11.

A type of mixture where you can see the different parts and they can easily be separated into their different parts.

a)

atomic mixture

b)

Compound mixture

c)

Heterogeneous mixture

d)

Homogeneous mixture

12.

A type of mixture that you can't see the different parts.

a)

Homogeneous mixture

b)

Heterogeneous mixture

c)

Compound

d)

distillation

13.

Iron objects can be separated from a mixture using a magnet.

a)

evaporation

b)

magnetic attraction

c)

distillation

d)

filtration

14.

Solids can be separated from liquids by pouring the mixture through a filter.

a)

magnetic attraction

b)

evaporation

c)

filtration

d)

distillation

15.

Liquids can be separated from each other by heating them up to the temperature at which one of the liquids boils. The liquid boils into a gas. Then the gas cools, forming the separated liquid.

a)

evaporation

b)

distillation

c)

magnetic attraction

d)

filtration

16.

When left in the open air, liquid solutions can change to gas, leaving solid components behind.

a)

Evaporation

b)

distillation

c)

filtration

d)

magnetic attraction

17.

Heterogeneous and Homogeneous are two types of what?

a)

compounds

b)

elements

c)

mixtures

d)

atoms

18.

Match the following

a)

Pure Substance

1.

Matter that always has the exact same composition.

b)

Element

2.

A substance that cannot be broken down into simpler substances

c)

Compound

3.

A substance that is made of 2 or more simpler substances.

d)

Heterogeneous

4.

The parts of this mixture are noticeably different.

e)

Homogeneous

5.

The parts of this mixture are indistinguishable from one another.

19.

Why does every sample of a substance have the same properties?

a)

A pure substance has a fixed composition.

b)

An element contains only one kind of atom.

c)

Compounds contain 2 or more elements.

d)

The composition of a mixture is not fixed.

e)

Based on the size of their largest particles.

20.

Why is the composition of an element fixed?

a)

A pure substance has a fixed composition.

b)

An element contains only one kind of atom.

c)

Compounds contain 2 or more elements.

d)

The composition of a mixture is not fixed.

e)

Based on the size of their largest particles.

21.

What makes something a compound?

a)

A pure substance has a fixed composition.

b)

An element contains only one kind of atom.

c)

Compounds contain 2 or more elements.

d)

The composition of a mixture is not fixed.

e)

Based on the size of their largest particles.

22.

Why can the properties of a mixture vary?

a)

A pure substance has a fixed composition.

b)

An element contains only one kind of atom.

c)

Compounds contain 2 or more elements.

d)

The composition of a mixture is not fixed.

e)

Based on the size of their largest particles.

23.

How are solutions classified?

a)

A pure substance has a fixed composition.

b)

An element contains only one kind of atom.

c)

Compounds contain 2 or more elements.

d)

The composition of a mixture is not fixed.

e)

Based on the size of their largest particles.

24.

Match the following

a)

Physical Property

1.

Any characteristic of a material that can be observed or measured.

b)

Melting Point

2.

The temperature at which a substance turns from solid into liquid.

c)

Viscosity

3.

A resistance to flowing.

d)

Conductivity

4.

A material's ability to allow heat to flow.

e)

Malleability

5.

The ability of a solid to be hammered without shattering.

25.

Choose an example of a physical property.

a)

Viscosity

b)

Choose a material for a specific purpose.

c)

Filtration and distillation.

d)

low viscosity

e)

compsition

26.

Give one reason for knowing the properties of a substance?

a)

Viscosity

b)

Choose a material for a specific purpose.

c)

Filtration and distillation.

d)

low viscosity

e)

compsition

27.

What are the processes that can be used to separate a mixture?

a)

Viscosity

b)

Choose a material for a specific purpose.

c)

Filtration and distillation.

d)

low viscosity

e)

compsition

28.

If a liquid is described as "runny", it has a _______?

a)

Viscosity

b)

Choose a material for a specific purpose.

c)

Filtration and distillation.

d)

low viscosity

e)

compsition

29.

When something undergoes a physical change, its size or shape may change but its _______ remains the same?

a)

Viscosity

b)

Choose a material for a specific purpose.

c)

Filtration and distillation.

d)

low viscosity

e)

compsition

30.

Match the following

a)

Chemical Property

1.

Any ability to change the composition of matter.

b)

Flammability

2.

A material's ability to burn in the presence of oxygen.

c)

Reactivity

3.

How readily a substance combines chemically with other substances.

d)

Chemical change

4.

When a substance reacts and forms one or more new substances.

e)

Precipitate

5.

Any solid that forms and separates from a liquid.

31.

When can chemical properties be observed?

a)

When substances are changing into other substances.

b)

A change in color, the production of a gas,

or the formation of a precipitate.

c)

Chemical change produces new

substances, Physical change does not.

d)

When iron rusts, the the rust is brittle.

32.

List the common types of evidence for a

chemical change.

a)

When substances are changing into other substances.

b)

A change in color, the production of a gas,

or the formation of a precipitate.

c)

Chemical change produces new

substances, Physical change does not.

d)

When iron rusts, the the rust is brittle.

33.

How do chemical changes differ from

physical changes?

a)

When substances are changing into other substances.

b)

A change in color, the production of a gas,

or the formation of a precipitate.

c)

Chemical change produces new

substances, Physical change does not.

d)

When iron rusts, the the rust is brittle.

34.

Explain why the rusting of an iron bar

decreases the strength of the bar.

a)

When substances are changing into other substances.

b)

A change in color, the production of a gas,

or the formation of a precipitate.

c)

Chemical change produces new

substances, Physical change does not.

d)

When iron rusts, the the rust is brittle.

35.

Convert 40 kilograms to grams (1000 g = 1 kg)

a)
400
b)
4000
c)
40000
d)
40
36.

Convert 30 inches to feet (12 in = 1 foot)

a)
2.5
b)
360
c)
.4
d)
5.2
37.
Convert 300 feet/hour into inches/seconds
a)
10
b)
100
c)
1000
d)
1000
38.
How many inches are in 1 mile?
(Hint:  5280 ft = 1 mi)
a)
66,330 in
b)
63,360 in
c)
63,660 in
d)
63,066 in
39.

Convert 4.80 cm to mm.  (1 cm = 10 mm)

a)
4.80 mm
b)
48 mm
c)
480 mm
d)
4800 mm
40.

Convert 300 meters to centimeters (100 cm = 1 m)

a)
3000 cm
b)
0.3 cm
c)
30,000 cm
d)
3 cn
41.
What unit is the largest unit
a)

km

b)
cg
c)
g
d)
dm
e)

mm

42.

Convert 21120 feet to miles (5280 feet = 1 mile)

a)
1
b)
2
c)
3
d)
4
43.
How many gallons are in 64 quarts?
a)
16gal
b)
.25gal
c)
.75gal
d)
1.5gal
44.

Which of these would best fit in the box?

a)

60 min

b)

1 day

c)

4 hrs

d)

1 hr

45.

Which of these would NOT be the appropriate unit in the box?

a)

60 min

b)

1 day

c)

4 days/4

d)

0.5 days/0.5

46.

Which of these would be the appropriate unit in the box?

a)

60 min

b)

1 day

c)

1 hour

d)

1 year

47.

Is there anything wrong with the dimensional analysis set up yes or no and why?

a)

yes, you have to have days in the denominator in the 2nd column to cancel with days in the first

b)

no, at the end of the dimensional analysis you will have days2 which is very helpful

c)

no, in this set up the days cancel every time

d)

yes, minutes will cancel with days easily with days in the numerator

48.

If the proper conversion is 2.2 lbs = 1 kg, then what should go in the empty box?

a)

2.2 lbs

b)

1000 g

c)

1000 ml

d)

1 L

49.

Convert 26.2 m/s to km/hr

a)

94.32 km/hr

b)

3.41 km/hr

c)

2.64 km/hr

d)

0.98 km/hr

50.

A 12 ounce bottle of shampoo lasts Joey 16 weeks. How long would you expect an 18 ounce bottle of the same brand to last him?

a)

24 weeks

b)

24 days

c)

10.6 weeks

d)

10.6 ounces

51.

The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet?

a)

0.867 ft

b)

7.8 ft

c)

8.07 ft

d)

8.27 ft

52.

The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?

a)

75 minutes

b)

120 minutes

c)

32 minutes

d)

12.5 minutes

53.

Gas costs $3.75 per gallon, and your car travels 32 miles for each gallon of gas. How far can you travel with $95?

a)

11 miles

b)

405 miles

c)

950 miles

d)

810 miles

54.
Convert 300 meters to centimeters:
a)
3000 cm
b)
0.3 cm
c)
30,000 cm
d)

3 cm

55.
Convert 4.80 cm to mm. 
a)
4.80 mm
b)
48 mm
c)
480 mm
d)
4800 mm
56.
The prefix "milli" means:
a)
1000
b)
1/1000
c)
1,000,000
d)
1/1,000,000
57.
What does the term kilo mean?
a)
100
b)
10
c)
.001
d)
1000
58.
m stands for....
a)
millimeter
b)
meter
c)
centimeter
d)
Liter
59.
The metric unit of measurement for length  is:
a)
gram
b)
liter 
c)
meter
60.
648 g = ____ mg
a)
6,480
b)
64,800
c)
648,000
d)
64.8
61.

Which of the following options is the base unit?

a)

kilometer

b)

centimeter

c)

meter

d)

millimeter

62.

73 m = _____ cm

a)

7,300 cm

b)

730 cm

c)

0.0073 cm

d)

7.3 cm

63.

1010 mg = _____ cg

a)

101 cg

b)

10100 cg

c)

.00101 cg

d)

0.0000101 cg

64.

The SI unit for mass is the ___________.

a)

meter

b)

kilogram

c)

liter

d)

second

e)

Newton

65.

The SI unit for time is the __________.

a)

meter

b)

kilogram

c)

liter

d)

second

e)

Newton

66.
Which statement uses SI unit prefixes correctly?
a)
100 cm = 10 km
b)
2.5 kg = 2500 cg
c)
1000 mL = 1 dL
d)
150 cm = 1.5 m
67.

Convert 40 ounces to pounds. (16oz = 1lb)

a)

2.5 pounds

b)

0.4 pounds

c)

2/5 pounds

d)

5 pounds

68.

How many gallons are in a pool that holds 758,000 Liters? (1 gallon = 3.79 Liters)

a)

200

b)

20,000

c)

200,000

d)

2,000,000

69.

How many years are in a 3 months?

a)

0.2 yrs

b)

0.75 yrs

c)

0.50 yrs

d)

0.25 yrs

70.

How many kilograms of calcium are there in 173 pounds of calcium?

(1 pound = 454 grams; 1 kg = 1000 g)

a)

1.10 kg

b)

78.5 kg

c)

110 kg

d)

78500 kg

71.

How many minutes are in four hours?

a)

175min

b)

280min

c)

240min

d)

325min

72.

If 1 inch = 2.54 centimeters, how many inches are in 120 centimeters?

a)

47.244 in

b)

304.8 in

c)

47.244 cm

d)

304.8 cm

73.

A 30 g serving of a certain breakfast cereal has 0.5 g of salt. How much salt would that be in milligrams?

a)

500mg

b)

480mg

c)

720mg

d)

375mg

74.
Change from standard form to scientific notation: 12,000,000
a)
12.0  x  107
b)
0.12  x  107
c)
1.2  x  106
d)
1.2  x  107
75.
Change from standard form to scientific notation: 12,000,000
a)
12.0  x  107
b)
0.12  x  107
c)
1.2  x  106
d)
1.2  x  107
76.
Change from standard form to 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
77.
How would you write 50,000 in scientific notation?
a)
50 x 105
b)
5 x 104
c)
5 x 103
d)
.5 x 103
78.

How many numbers can be in front of the decimal if the number is in correct scientific notation?

a)

Only a Zero

b)

One

c)

Two

d)

Any amount

79.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
80.
Try to change the number back to standard form:  6.79  x  104
a)
679,000
b)
6,790
c)
67,900
d)
6,790,000
81.
Try to change the number back to standard form: 3.97  x  10-2
a)
0.000397
b)
0.0397
c)
0.0000397
d)
0.397
82.
How would you write -5.6 x 10-3 in standard form?
a)
0.0056
b)
-5,600
c)
0.00056
d)
-0.0056
83.
(2 x 10-5)+ (7 x 10-5)
a)
9 x 10-10
b)
14 x 10-5
c)
9 x 10-5
d)
1.4 x 10-4
84.
(8 x 104) - (2 x 104)
a)
16 x 1016
b)
16 x 108
c)
6 x 108
d)
6 x 104
85.
Subtract withing scientific notation 
(7.32 x 10⁶) - (4.01 x 10⁸)
a)
-3.937 x 10⁸
b)
3.937 x 10⁸
c)
3.937 x 10⁷
d)
3.937 x ⁻²
86.
Add withing scientific notation 
(5.2 x 10⁷) + (3.01 x 10⁴)
a)
5.20301 x 10¹¹
b)
.520301 x 10⁷
c)
5.20301 x 10⁷
d)
5.20301 x 10⁸
87.

What do you do to your exponents when you are multiplying in scientific notation?

a)

Subtract

b)

Multiply

c)

Divide

d)

Add

88.

What do you do to your exponents when you are dividing in scientific notation?

a)

Subtract

b)

Divide

c)

Multiply

d)

Add

89.
Multiply:
(9.4 x 106)(3.2 x 105)
a)
30.08 x 1011
b)
3.8 x 101
c)
3.008 x 1012
d)
2.9375 x 101
90.
Divide:
(6.9 x 107) / (2.3 x 10-3)
a)
3 x 1010
b)
3 x 104
c)
3 x 10-4
d)
3 x 10-11
91.
(9.6×10-8)÷(2×10-15)
a)
-4.8×107
b)
4.8×107
c)
4.8×10-7
d)
-4.8×10-7
92.
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
93.
(2 x 109)(4 x 10-4)
a)
8 x 1013
b)
8 x 1036
c)
8 x 105
d)
8 x 10-36
94.
5 x 1012
------------
2 x 106
a)
2.5 x 102
b)
2.5 x 106
c)
3 x 102
d)
2.5 x 1018
95.

How many significant figures does this value have?

0.00908

a)

5

b)

6

c)

3

d)

2

96.

How many signifiant figures are in 3.70?

a)

3

b)

2

c)

4

d)

1

97.

How many significant figures are in 3.0?

a)

1

b)

2

98.

4.2×10−34.2\times10^{-3}  Write the number in standard form.



(a)  

99.
How many significant figures: 0.012 km
a)
1
b)
2
c)
3
d)
4
100.
How many significant figures: 4.20 cm
a)
1
b)
2
c)
3
d)
4
101.

How many significant figures are there in 1008 grams?

a)

1

b)

2

c)

3

d)

4

102.
How many significant figures: 2016 m
a)
1
b)
2
c)
3
d)
4
103.

Identify, how many significant figures does the following number have?

0.005090.00509  



(a)  

104.

Identify, how many significant figures does the following number have?

0.2460800.246080  



(a)  

105.

What are significant figures?

a)

They are the reliably known digits that a measurement contains.

b)

They are diagrams representing significant atoms and molecules.

c)

They are measurements which are important to everyday life.

d)

They are units of measurement in the International System of Units.

106.

Select the measurement with the correct number of significant figures.

a)

8.250

b)

8.25

c)

8.2

d)

8

107.

Select the measurement with the correct number of significant figures.

a)

6 cm

b)

6.770 cm

c)

6.77 cm

d)

6.775 cm

108.

How many significant figures are in the following measurement?

2.51 m

a)

1 significant figure

b)

2 significant figures

c)

3 significant figures

d)

4 significant figures

e)

5 significant figures

109.

How many significant figures are in the following measurement?

0.008 s

a)

4 significant figures

b)

1 significant figure

c)

3 significant figures

d)

8 significant figures

110.

How many significant figures are in the following measurement?

1052.8 km

a)

5 significant figures

b)

3 significant figures

c)

10 significant figures

d)

2 significant figures

e)

4 significant figures

111.

How many significant figures are in the following measurement?

3025.000 g

a)

5 significant figures

b)

7 significant figures

c)

6 significant figures

d)

3 significant figures

e)

1 significant figure

112.

How many significant figures are in the following measurement?

500 mL

a)

At least 1 significant figure

b)

3 significant figures

c)

2 significant figures

d)

5 significant figures

e)

4 significant figures

113.

How many significant figures are in the following measurement?

5.0 × 102 s

a)

5 significant figures

b)

3 significant figures

c)

1 significant figure

d)

2 significant figures

e)

0 significant figures

114.

What is the following measurement rounded to 3 significant figures?

6.589 cm

a)

6.59 cm

b)

6.58 cm

c)

6.589 cm

d)

6.60 cm

e)

6.5 cm

115.

What is the following measurement rounded to 3 significant figures?

584.49 s

a)

584.4 s

b)

585 s

c)

584.5 s

d)

584 s

e)

580 s

116.

What is the following measurement rounded to 5 significant figures?

787.985 kg

a)

788 kg

b)

787.98 kg

c)

787.99 kg

d)

788.00 kg

117.

What is the following measurement rounded to 4 significant figures?

4.3254 m

a)

4.325 m

b)

4.320 m

c)

4.326 m

d)

4.300 m

118.

How many significant figures are in the result for the following calculation?

6.08 kg×5.0 ms6.08\ kg\times5.0\ \frac{m}{s}  

a)

3 significant figures

b)

1 significant figure

c)

2 significant figures

d)

4 significant figures

e)

5 significant figures

119.

How many significant figures are in the result for the following calculation?

65.3 J50.085 s\frac{65.3\ J}{50.085\ s}  

a)

5 significant figures

b)

2 significant figures

c)

1 significant figure

d)

3 significant figures

120.

What is the result for the following calculation? Ensure that the correct number of significant figures are included in the calculated result.

25.085 m + 16.2 m25.085\ m\ +\ 16.2\ m  

a)

41.3 m

b)

41.2085 m

c)

41.285 m

d)

41.2 m

121.

What is the result of the following calculation? Ensure that the correct number of significant figures are included in the calculated result.

12.582 s − 5.23 s12.582\ s\ -\ 5.23\ s  

a)

7.360 s

b)

7.36 s

c)

7.35 s

d)

7.352 s

e)

7.350 s

122.

For significant figures, which term is the limiting term in the following calculation?

17.2 g + 9 g + 36.333 g + 0.58 g17.2\ g\ +\ 9\ g\ +\ 36.333\ g\ +\ 0.58\ g  

a)

17.2 g

b)

9 g

c)

36.33 g

d)

0.58 g

123.

Which set of measurements demonstrates accuracy and precision if the true value is equal to 25.0 cm?

a)

19.9 cm

20.0 cm

20.0 cm

20.1 cm

20.2 cm

b)

24.8 cm

24.9 cm

25.0 cm

25.0 cm

25.1 cm

c)

17.2 cm

18.9 cm

19.8 cm

20.0 cm

22.0 cm

d)

23.5 cm

24.9 cm

25.0 cm

26.3 cm

26.5 cm

124.

What is precision in the context of scientific measurement?

a)

The consistency of a set of measurements and the extent to which they are clustered together.

b)

The extent to which a set of measurements aligns itself with the established true value.

c)

A change in the direction of the rotational axis for a given case of rotational motion.

d)

The number of reliably known digits in a given measurement.

125.
Convert: 186.5 K to C
a)
-86.4 C
b)
-50 C
c)
-68.4 C
d)
180 K
126.

Convert: -45.9 C to K:

a)

227.1 K

b)

400 K

c)

0 K

d)

373 K

127.

Convert 20.0oC to Kelvin.

a)

273 K

b)

298 K

c)

293 K

d)

20 K

128.

Convert 273K to oC

a)

546 oC

b)

-273 oC

c)

0 oC

d)

0 K

129.

Which of the following is the correct formula in converting ℃ to ℉

a)

5/9 (℉-32)

b)

9/5 (℃)+32

130.

Using the formula 5/9 (℉-32), convert 110 ℉ to ℃.

a)

33

b)

23

c)

53

d)

43

131.

Convert 45 oC to Kelvin

a)

318 K

b)

-228 K

c)

12285 K

d)

0.164 K

132.

A bunsen burner flame has a temperature of 1700 K, what is this temperature in Celsius?

a)

1427 oC

b)

1973 oC

c)

1463 oC

d)

6.3 oC

133.

Dry ice has a temperature of -78 oC, what is this temperature in Kelvin?

a)

195 K

b)

-351 K

c)

159 K

d)

-213 K

134.

Convert 305 K to degrees Celsius

a)

32 oC

b)

578 oC

c)

112 oC

d)

68 oC

135.

The value 34 oC is equal to (a)   Kelvin.

136.

The temperature at which particles stop moving is

a)

0 oC

b)

32 oF

c)

0 K

d)

0 oF

137.

When it is cold the atoms move...

a)

slow

b)

fast

c)

still

d)

there are no atoms

138.

when it is hot the atoms move...

a)

slow

b)

fast

c)

still

d)

there are no atoms

139.

100 Celsius is ? Kelvin (K = Celsius + 273)

a)

173 K

b)

373K

c)

273 K

d)

0 K

140.

Which temperature is equal to 20 K?

a)

-253°C

b)

-293°C

c)

253°C

d)

293°C

141.

The average daytime temperature on Venus is 453oC.  What is the temperature in degrees Kelvin?

a)

453K

b)

726K

c)

180K

d)

0K

142.

What tool is used to measure temperature?

a)

a balance

b)

a thermometer

c)

a hydroscope

d)

a scale

143.

Convert: 253 °C to K

a)

526

b)

625

c)

0

d)

186

144.

Select the temperature in °C

a)

40°C

b)

100°C

c)

96°C

d)

36°C

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