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UNIT 1 REVIEW - INTRO TO CHEMISTRY

Total questions: 36

Worksheet time: 49mins

Name
Class
Date
1.
During lab activities that involve, glassware, heat or chemicals you should wear..
a)
Eyeglasses
b)
A protective suit
c)
Goggles and an apron
d)
Just normal clothing
2.
Which tool would be used to measure the mass of an object?
a)
electronic balance
b)
beaker
c)
meter stick
d)
iPad
3.
When is it OK to eat or drink at the lab tables?
a)
Always
b)
During group work, but not during lab activities
c)
Never
d)
During lab activities
4.
To two digits past the decimal, how long is the paperclip?
a)
3.20 cm
b)
2.30 cm
c)
32.0 cm
d)
30.20 cm
5.

This is the tool and unit we used to measure SMALL amounts of liquid (volume).

a)

beaker; Liter

b)

graduated cylinder; milliliter

c)

beaker; milliliter

d)

graduated cylinder; Liter

6.

Which is NOT an SI base unit?

a)

second

b)

kilogram

c)

degree Celsius

d)

meter

7.

Which of the following shows 229.613 correctly rounded to four significant figures and in scientific notation?

a)

0.2296 x 10-3

b)

2.29 x 103

c)

2.296 x 10-2

d)

2.296 x 102

8.
Write 3.2 x 103 in standard form.
a)
3.200
b)
3200
c)
32000
d)
.0032
9.
You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.
a)
25 mg
b)
25,000 mg
c)
250 mg
d)
2500 mg
10.
When you conduct experiments in the lab, long hair should be:
a)
cut off
b)
held back with both hands
c)
combed nicely
d)
 confined
11.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
12.
Round 1047.78 to three sig figs
a)
104
b)
105
c)
1050
d)
1050.00
13.
Convert 17 m to cm:
a)
0.17 cm
b)
0.017 cm
c)
1,700 cm
d)
170 cm
14.
1000 grams = _____ kilograms
a)
0.0001
b)
1,000,000
c)
10
d)
1
15.

The SI unit for measuring length is the __________.

a)

meter

b)

kilogram

c)

liter

d)

Newton

e)

second

16.

The SI unit for volume is the __________.

a)

meter

b)

kilogram

c)

liter

d)

second

e)

Newton

17.

1 L = ______ milliliters

a)

A. 0.01

b)

B. 0.001

c)

C. 100

d)

D. 1000

18.
What number is the metric system based?
a)
10
b)
20
c)
1
d)
100
19.
How many variables should be tested at a time?
a)
Three
b)
Zero
c)
Two
d)
One
20.
What is the first step in the scientific method?
a)
Make an observation --> Question
b)
Design and conduct an experiment
c)
Make an hypothesis
d)
Share your results
21.
This variable in an experiment is the one being deliberately changed by the scientist. 
a)
dependent variable
b)
independent variable
c)
data
d)
control group
22.
Which type of data involves numbers that are obtained by counting or measuring?
a)
quantitative
b)
qualitative
23.
It is a measure of how close measurements come to each other when they are made in the same way
a)
Accuracy
b)
Precision
c)
Error
d)
Extrapolation
24.

How close a measurement is to the accepted value is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

25.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
26.

Which Student is the most Precise?

a)

Alex

b)

Shandra

c)

Luis

27.
How many sig figs are in 0.0045670?
a)
8
b)
4
c)
5
d)
7
28.
How many sig figs are in 730?
a)
1
b)
2
c)
3
d)
4
29.

Which is the more precise measurement?

a)

4 mL

b)

4.3 mL

c)

4.30 mL

d)

4.300 mL

30.
a)

Both

b)

Accurate

c)

Precise

d)

Neither

31.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle
32.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
33.
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
34.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
35.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
36.
What units are used to measure Density?
a)
cm3/g
b)
g
c)
g/cm3
d)
cm3

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