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Lab Safety, Metric, Scientific Notation and Sig Figs

Total questions: 51

Worksheet time: 33mins

Name
Class
Date
1.
What safety symbol is this? 
a)
biohazard
b)
radiation
c)
toxic
d)
corrosive
2.
What safety symbol is this?
a)
Flammable 
b)
Oxidizing Agent
c)
No Open Flame
d)
Explosion
3.
a)
Poison/Toxic
b)
Bio Hazard
c)
Radioactive
d)
Corrosive
4.
True or False: The wearing of flip flops and other open toed shoes are acceptable during a laboratory investigation during the hot summer months.
a)
True
b)
False
5.
If you spill or break something during an experiment, what is the FIRST thing you should do?
a)
Tell the teacher.
b)
Clean it up. 
c)
Cover it with a paper towel.
d)
Leave it for someone else.
6.
Identify the piece of lab equipment seen in the image.
a)
Erlenmeyer Flask
b)
Graduated Cylinder
c)
Beaker
d)
Test Tube
7.
True or False: If you see something dangerous taking place during a lab,you should immediately tell the teacher.
a)
True
b)
False
8.
Which of the following should NOT be worn during a lab investigation?
a)
Flip flops
b)
Loose, long hair
c)
Dangling jewelry
d)
All of the above
9.
A beaker is used to measure volume in which metric unit?
a)
Milliliters (mL)
b)
Grams (g)
c)
Meters (m)
d)
Kilograms (kg)
10.
If you are not sure what to do during a lab activity:
a)
guess
b)
change lab partners
c)
ask a teacher
d)
just sit quietly and do nothing
11.
Disrupting other students in the laboratory with horseplay in the lab is:
a)
helpful.
b)
allowed
c)
dangerous.
d)
the quickest way to do a job.
12.
Which of the following IS considered safety equipment in our classroom?
a)
Eyewash Station
b)
Emergency Shower
c)
Fire Extinguisher
d)
All of the Above.
13.
What is used to protect your eyes from chemicals, broken glass, and fire?
a)
Fire blanket
b)
Eye wash
c)
Goggles
d)
Flask
14.
a)
smock
b)
apron
c)
cover up
d)
goggles
15.
This lab tool is used to pick up small objects.
a)
Microscope
b)
Forceps
c)
Erlenmeyer Flask
d)
Triple Beam Balance
16.
This lab tool is tall, skinny and used to measure smaller amounts of liquid. 
a)
Erlenmeyer Flask
b)
Beaker
c)
Graduated Cylinder
d)
Hand Lens
17.
When is it OK to eat or drink in the lab?
a)
Always
b)
Never
18.
It's fine to smell chemicals directly from their containers.
a)
True
b)
False
19.
Why are safety symbols important?
a)
So you know wha to do
b)
They are cool
c)
They tell you specific dangers
d)
They tell you how to do an experiment
20.
How many sig figs are there?
100000000
a)
1
b)
9
c)
10
21.
How many sig figs are there?
100.00
a)
1
b)
3
c)
4
d)
5
22.
How many sig figs are there?
0.00400
a)
1
b)
3
c)
5
d)
6
23.
How many sig figs are there?
5.00000008
a)
2
b)
6
c)
9
24.
How many sig figs are there?
27000000
a)
2
b)
5
c)
8
25.
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
26.
All of the following have one significant figure except:
a)
100 cm
b)
0.0001 cm
c)
2 cm
d)
2.00 cm
27.
Which of the following numbers has three significant figures?
a)
1014 miles
b)
101 feet
c)
1000 yards
d)
all of the choices
28.

How many significant figures: 450 m

a)

3

b)

2

c)

1

d)

0

29.
1 cm = _______ mm
a)
10
b)
100
c)
1,000
d)
1
30.
Which unit would be best to measure the amount of liquid in a spooful of cough syrup?
a)
milliliters
b)
liters
c)
millimeters
d)
pints
31.
Which of these would be the best to measure width of the edge of a dime?
a)
millimeters
b)
centimeters
c)
meters
d)
grams
32.
A kilogram is _____ times larger than a gram.
a)
10
b)
100
c)
1,000
d)
10,000
33.
A centimeter is ____ times smaller than a meter.
a)
10
b)
100
c)
1,000
d)
10,000
34.
What number is the metric system based?
a)
10
b)
20
c)
1
d)
100
35.
7.82 x 10-6 is an example of scientific notation. The exponent of -6 tells you your number will be very ________.
a)
Large
b)
Small
c)
Basic
36.
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
37.
Change from standard form to scientific notation:  450,000
a)
4.5  x  105
b)
45  x  105
c)
4.5  x  104
d)
4.5  x  106
38.
Change from standard form to scientific notation: 0.004078
a)
4.078  x  10-3
b)
4.078  x  103
c)
40.78  x  10-4
d)
.4078  x  10-2
39.
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
40.
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
41.

Finish the statement. When it comes to doing problem and using significant figure rules, the answer to the problem__

a)

cannot be anymore precise than the least precise number in the problem, for addition it is the least numbers to the right of the decimal, and for multiplying it is the least number of significant figures

b)

should be that all numbers are significant that appear in a calculator

c)

should never be rounded

d)

should never have any zeros

42.
Volume?
a)
63.5 mL
b)
63 mL
c)
63.55 mL
d)
6 mL
43.

Which is the more precise measurement?

a)

4 mL

b)

4.3 mL

c)

4.30 mL

d)

4.300 mL

44.

What is the length of the blue line?

a)

.3 cm

b)

.33 cm

c)

.03 cm

d)

3.219 cm

45.

This is used to clean chemicals or debris (stuff) out of your eyes

a)

test tube holder

b)

eye wash

c)

eye dropper

d)

lab apron

46.

Type in the measurement on the graduated cylinder to the correct number of significant digits. No unit.

a)

6.300

b)

6.3

c)

6.32

d)

7.70

47.

Type in the measurement on the ruler to the correct number of significant digits. No unit.

a)

41.6

b)

41

c)

42

d)

41.50

48.

How much liquid is in the graduated cylinder?

a)

12 mL

b)

12.0 mL

c)

16.0 mL

d)

None of the above

49.

How do you measure the volume of an irregular shaped object?

a)

measure the length and width of the object

b)

measure the mass of the object

c)

use the volume displacement method

d)

measure the height of the object

50.

What is the volume of the two red spheres?

a)

4 mL

b)

6 mL

c)

2 mL

d)

8 mL

51.

Calculate based on the rules for rounding multiplication: round to the least number of significant figures.

53.23m x 10.0m

a)

5.230 m2

b)

553.30 m2

c)

532 m2

d)

532.3 m2

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