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Intro to Chem Review

Total questions: 58

Worksheet time: 1hrs 6mins

Name
Class
Date
1.
How many significant figures: 216 m
a)
1
b)
2
c)
3
d)
0
2.
How many significant figures: 2016 m
a)
1
b)
2
c)
3
d)
4
3.
How many significant figures: 153.0 mL
a)
1
b)
2
c)
3
d)
4
4.
How many significant figures: 0.012 km
a)
1
b)
2
c)
3
d)
4
5.
How many significant figures: 1000 mL
a)
1
b)
2
c)
3
d)
4
6.
How many significant figures: 100.000 cL
a)
1
b)
3
c)
5
d)
6
7.
Solve and give your answer with the correct number of significant figures
129.6/3
a)
43.0
b)
43
c)
 4x101
d)
40
8.
Solve and give your answer with the correct number of significant figures
(12.470)(271)
a)
3366.9
b)

3.38x103

c)
3400
d)
3370
9.
Solve and give your answer with the correct number of significant figures
24.28 + 12.5
a)
3.687 x 101
b)
36.8
c)
37
d)
3.70x101
10.

Express the answer using Sig Fig Rules:

28.367 / 3.74

(a)  

11.

Express the answer using Sig Fig Rules:

658.0 + 23.5478 + 1345.29

(a)  

12.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
13.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
14.
Why do some substances float on water?
a)
they are warmer than water
b)
they are cooler than water
c)
they are more dense than water
d)
they are less dense than water
15.
The density of gold is 19.32 g/mL.  The king's gold ring displaces 0.4 mL when placed in water.  What is the mass of the ring?
a)
48.3 g
b)
7.7 g
c)
0.02 g
d)
19.28 g
16.
A diamond has a mass of 1.2 g.  If diamond has a density of 3.51 g/mL, what is the volume of the diamond.
a)
0.34 mL
b)
2.9 g/mL
c)
2.3 mL
d)
4.2 mL
17.

Which box has a higher density?

a)

A

b)

B

c)

They are the same

18.

A bar of copper has a mass of 216g and a volume of 24 cm3. What is the density of copper?

a)

9g/cm3

b)

5184g/cm3

c)

.11g/cm3

d)

322mL

19.
What two types of measurements make up DENSITY? 
a)
Mass and Volume
b)
Temperature and Mass
c)
Grams and Centimeters
d)
Volume and Weight
20.

What unit is used to measure mass?

a)

cm3/g

b)

g

c)

g/cm3

d)

cm3

21.
Which lab tool might you use to measure the volume of a liquid?
a)
electric scale
b)
bunsen burner
c)
test tube
d)
graduated cylinder
22.

A bar of copper has a mass of 216g and a volume of 24 cm3. What is the density of copper?

a)

9g/cm3

b)

5184g/cm3

c)

.11g/cm3

d)

322mL

23.
How would you write 564,000,000 in scientific notation?
a)
5.64 x 10-7
b)
5.64 x 106
c)
5.64 x 108
d)
56.4 x 107
24.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
25.
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
26.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
27.
UNDERSTANDING
If the exponent is a negative number...
a)
you will get a large number
b)
you will get a small number
28.
UNDERSTANDING
If the exponent is a positive number...
a)
you will get a large number
b)
you will get a smaller number
29.
UNDERSTANDING:
The first number in scientific notation must be...
a)
between and including 0 and 10
b)
between and including 1 and 9.9999
c)
between and including 0 and 9.999
d)
between and including 1 and 10 
30.

How would you write 0.0005 in scientific notation?

a)

50 x 10-5

b)

5 x 10-4

c)

5 x 103

d)

.5 x 103

31.

Add the scientific notation:

(6.2 x 10²) + (9.7 x 10⁰)

a)

.6297 x 10²

b)

6.297 x 10⁰

c)

6.297 x 10³

d)

6.297 x 10²

32.

Multiply the scientific notation:

(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

33.

Divide the scientific notation:

5.2 x 1013 / 1.5 x 107

a)

3.9 x 106

b)

4 x 1020

c)

3.4 x 106

d)

3.9 x 1020

34.

A chemical change (a)  

Choose from the below words
changes the physical properties of
creates a new substance and cannot
35.

Is this an example of a physical or chemical change?

a)

physical

b)

chemical

36.

A chemical change _____________ the identity of the substance.

a)

changes

b)

maintains

37.
Glass bottle that is shattered
a)
Chemical Change
b)
Physical Change
38.

Sugar dissolves in water

a)
Chemical Change
b)
Physical Change
39.

Baking a cake for your friends birthday is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

40.

Sugars ability to dissolve in water is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

41.

a change in which one or more substances are converted into different substances

a)

physica change

b)

chemical change

42.

Which of the following is NOT a physical change?

a)

Crushing a can

b)

boiling water

c)

shredding paper

d)

burning paper

43.

Which of the following is NOT a sign of a chemical change?

a)

formation of a precipitate

b)

unexpected color change

c)

unexpected temperature change

d)

change in state of matter

44.

This diagram represents...

a)

An element

b)

A molecule

c)

A compound

d)

A mixture of elements and compounds

45.

Which is a mixture of compounds?

a)
b)
c)
d)
46.

Which is a pure substance?

a)
b)
c)
d)
47.

What type of substance is pictured?

a)

element

b)

compound

c)

mixture

d)

solution

48.

What type of substance is pictured?

a)

element

b)

compound

c)

mixture

d)

solution

49.

What type of substance is pictured?

a)

element

b)

compound

c)

mixture

50.
Chicken soup is an example of what kind of substance?
a)

homogeneous mixture

b)
solution
c)
heterogeneous mixture
d)
compound
51.

Mixture that has ingredients uniformly mixed together.

a)

Elements

b)

Homogeneous Mixture

c)

Heterogeneous Mixture

d)

Compound

52.

The boiling point of a chemical (Ethanol) is 78.40 Degrees Celsius. A Student conducts an experiment and finds the boiling point of 75.0 Degrees Celsius. What is the percent error of the student's measurement?

a)

3.57%

b)

4.3%

c)

96.56%

d)

2.7%

53.
Evidence of a chemical reactions is anything that shows - 
a)
a new substance has formed
b)
a solid dissolved in a liquid
c)
interaction between 2 gases
d)
a change in the state of matter
54.
Which of the following describes a precipitate?
a)
a liquid forms when a block of metal is heated
b)
a solid forms when one liquid is poured into another
c)
a gas forms when a solid is placed in a liquid
d)
bubbles form when an acid is poured on a rock
55.
Which is NOT an indication of a chemical change?
a)
temperature change
b)
formation of a precipitate
c)
shape change
d)
production of light
56.
Four students performed four different investigations by combining different substances. Which of the observations is most indicative of a chemical reaction?
a)
investigation 1
b)
investigation 2
c)
investigation 3
d)
investigation 4
57.

What is matter?

a)

everything that has mass and occupies space

b)

something important

c)

only things that are heavy.

58.

What happens to the mass of materials before and after an experiment?

a)

The mass remains the same.

b)

The mass decreases.

c)

The mass increases.

d)

The mass becomes null.

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