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Chem: UNIT 1: Make-up Quiz

Total questions: 50

Worksheet time: 2hrs 31mins

Name
Class
Date
1.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
sour milk
2.
What is an example of a Chemical change?
a)
Ripped paper 
b)
boiled egg
c)
cracked egg
d)
sugar in water
3.
Which of the following is an example that includes evidence of a chemical reaction?
a)
A sample of zinc is placed in water and it settles to the bottom
b)
A solid block of ice is heated and it completely melts into a liquid. 
c)
Sugar that is burned gives off an odor and turns brown and then black.
d)
A tomato is placed into a blender and chopped up into smaller pieces.
4.
Which of the following characteristics is shared by all chemical reactions?
a)
Produce a precipitate
b)
Show a color change
c)
Release heat energy
d)
Form new substances
5.
Is 4,000 mg greater than, less than, or equal to 4 g?
a)
greater than
b)
less than
c)
equal to
6.
Is 11 g greater than, less than, or equal to 1,100 mg?
a)
greater than
b)
less than
c)
equal to
7.
9,000 cm = ______ m 
a)
900
b)
9
c)
90
d)
90,000
8.
98 dm = ________mm
a)
98
b)
0.98
c)
980
d)
9800
9.
How many significant digits are there in "0.94"?
a)
1
b)
2
c)
3
d)
none
10.
How many significant digits are there in "8003"?
a)
1
b)
2
c)
3
d)
4
11.
How many significant digits are there in "0.0805"?
a)
2
b)
3
c)
4
d)
5
12.
Round "455,000" to two significant digits.
a)
46
b)
460,000
c)
460
d)
45
13.
Solve and round accordingly. 
"9.4991 - 7.3"
a)
2.2
b)
2.1991
c)
2.200
d)
2.20
14.
Solve and round accordingly.
"7.9 + 9.19 + 75.351"
a)
92.4
b)
92.441
c)
92.44
d)
92
15.
Solve and round accordingly. 
"791.6 x 52"
a)
41000
b)
41
c)
41160
d)
41200
16.
Solve and round accordingly. 
"3.2 x 4.0 x 12.399"
a)
160
b)
158.707
c)
16
d)
158.71
17.

Multiply (2.45 x 10 ^4) x (8.78 x 10 ^6) and express in scientific notations.

a)

2.15 x 10 ^11

b)

2.15 x 10 ^14

c)

2.10 x 10 ^14

d)

2.10 x 10 ^15

18.
Divide (7.78 x 10 ^8) / (9.67 x 10 ^-9) and express in scientific notations.
a)
8 x 10 ^16
b)
7 x 10 ^15
c)
8 x 10 ^15
d)
7 x 10 ^16
19.
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
20.

Solve and round to the correct number of significant figures.


1.5 x 0.5

a)

.75

b)

.8

c)

.750

d)

.7

21.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
22.
How many significant figures does the following number have: 1740200
a)
2
b)
1
c)
3
d)
5
23.
How many sig figs are there?
4000.
a)
1
b)
3
c)
4
24.
How many yards are in 1 mile?
a)
1670yds
b)
5280yd
c)
1760yds
d)
5820yds
25.
How many inches are in 1 mile?
a)
66330in
b)
63360in
c)
63660in
d)
63066in
26.
A bicycle has a speed of 6 m/s. What is its speed in km/h?  (1 km=1000 m)
a)
21.6 km/h
b)
16.67 km/h
c)
2.16 km/h
d)
1.67 km/h
27.
Complete the statement:
5 cm/min = ______ m/day
(100 cm = 1 m)
a)
72
b)
840
c)
7.2
d)
5,040,000
28.
The Olympic record for the high jump is just over 2.6 yards. What is that distance in feet?  (3 ft=1 yd)
a)
0.867 ft
b)
7.8 ft
c)
8.07 ft
d)
8.27 ft
29.
A bar of copper has a mass of 216g and a volume of 24cm3. What is the density of copper?  
a)
9g/cm3
b)
.11g/cm3
c)
5184g/cm3
d)
322mL
30.

Target on the right, how would it be described?

a)

Accurate

b)

Precise

c)

Accurate and Precise

d)

Neither Accurate or Precise

31.

What is the volume of this liquid

a)

40 mL

b)

41 mL

c)

42 mL

d)

43 mL

32.

Houston has approximately 2.21 million people. Each person has 2 hands and each hand has 5 fingers. How

many fingers are in Houston? Answer in scientific notation, using the correct number of sig figs.

a)

2.21 x 1011 fingers

b)

2.21 million fingers

c)

2.21 x 106 fingers

d)

2.21 x 107 fingers

33.

A newborn baby eats 8 times a day. At each feeding, he eats 2.5 ounces of formula. How many days will it take

for the baby to eat 1000 ounces?

a)

50 days

b)

400 days

c)

32 days

d)

312 days

34.

A backyard pool is 15.8 feet wide, 19.2 feet long and 5.5 feet deep. What is this pool's volume in cubic meters? [1 meter = 3.28 ft]

a)

1600 m3

b)

47.3 m3

c)

16,600 m3

d)

55.9 m3

35.
Elijah earn $200 for 8 hours of work. What is the unit rate (in dollars per hour)?
a)
$50 per hour
b)
$12 per hour
c)
$192 per hour
d)
$25 per hour
36.
Gas costs $3.05 a gallon, and your car travels at 27 miles for each gallon of gas. How far can you travel in your car with $95 in your pocket?
a)
11 miles
b)
840 miles
c)
7800 miles
d)
870 miles
37.

If a flu shot calls for a syringe of 2.5 cc of vaccine, how much is that in mL?

a)

2.5 mL

b)

25 mL

c)

0.25 mL

d)

0.025 mL

38.

How many decades are equal to 1.7 x 1025 minutes?

60 min = 1 hour; 24 hours = 1 day; 7 days = 1 week; 52 weeks = 1 year; 10 years = 1 decade

a)

3.2 x 1018 decades

b)

3.2 x 1019 decades

c)

1.2 x 1022 decades

d)

2.3 x 1020 decades

39.
Convert to scientific notation.
a)
3.2 x 104
b)
3.3 x 103
c)
3.3 x 10-4
d)
3.2 x 10-3
40.
What is the symbol for Carbon?
a)
C
b)
Ca
c)
Cu
d)
Cl
41.
What is the symbol for Copper?
a)
C
b)
Ca
c)
Cu
d)
Cl
42.
What is the symbol for Gold?
a)
Au
b)
Ag
c)
G
d)
Go
43.
What is the symbol for Silver?
a)
Au
b)
Ag
c)
S
d)
Si
44.
What is the symbol for Nitrogen?
a)
P
b)
K
c)
N
d)
Ni
45.
What is the symbol for Magnesium?
a)
P
b)
Ma
c)
Mg
d)
M
46.
What is the symbol for Iron?
a)
Fe
b)
L
c)
Ld
d)
N
47.
What is the volume of 150 grams of lead if it has a density of 11.3 g/cm3?
a)
13.3 g
b)
13.3 cm3
c)
.075 g
d)
1695 cm3
48.
Calculate the density of the cube.
a)
.33 g/cm3
b)
.4 g/cm3
c)
.6 g/cm3
d)
.5 g/cm3
49.
If an object has a density of 3.6 g/mL and you put it into water, will it sink or float?  
a)
sink
b)
float
50.
The density of this material is 2 g/cm3.
There are 24 cm3  Find the total mass.
a)
12 grams
b)
48 grams
c)
12 g/cm3
d)
48 g/cm3

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