Name:_________________________
Assignment: Lab Safety and Measuring2023
Class/Period:______________________
Teacher: Climenhaga
1 How much water should be added to the graduated cylinder shown below to increase the volume to 15 milliliters?
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11 mL
10 mL
3 mL
4 mL
2 Which safety precaution is recommended when a liquid is being heated in a test tube?
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When holding the test tube, keep fingers closest to the open end of the tube.
Direct the flame of the burner into the open end of the test tube.
Stopper the test tube with a rubber stopper.
Wear goggles and a laboratory apron.
3 The diagram shows a Celsius thermometer recording a certain temperature.
What is the correct reading of the thermometer?
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5°C
4.3°C
0.3°C
4°C
4 What is the approximate length of the earthworm shown in the diagram below?
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9 mm
90 mm
10.6 cm
106 cm
5 During an investigation, a student measures out 15 grams of salt. Then, he measures 15 milliliters of water and adds the salt to it.
Next, he measures a 1 centimeter wide by 4 centimeters long section of plant leaf. Which list of tools is arranged in the order that
the student used them?
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graduated cylinder, ruler, balance
balance, ruler, graduated cylinder
graduated cylinder, balance, ruler
balance, graduated cylinder, ruler
6 Which diagram illustrates the safest method of heating a solution in a test tube? (Note: The person heating the tube is to the left of
each diagram.)
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7 When heating liquid materials in laboratory glassware, a student should always
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wear safety goggles
use Benedict’s solution
stopper the test tube
record the temperature of the liquid
8 The diagram shows the measurements of two fish.
The difference in length between fish A and B is
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2 cm
2 mm
2 inches
2m
9 Carrie is working with a graduated cylinder as shown in the diagram.
What should Carrie do to get a volume of 12.5 milliliters (mL) of liquid in the graduated cylinder?
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Add 0.5 mL of liquid
Add 1.5 mL of liquid
Remove 0.5 mL of liquid
Remove 1.5 mL of liquid
10 The diagram represents a portion of a 100-milliliter graduated cylinder.
What is the reading of the meniscus?
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35.0 mL
36.0 mL
44.0 mL
45.0 mL
11 The diagram below represents the measurement of a biological specimen.
What is the approximate length of the specimen in millimeters?
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25 mm
30 mm
35 mm
40 mm
12 The photograph shows a graduated cylinder filled with water to the level of 36 milliliters.
Placing a very small stone in this graduated cylinder will cause the level in this water to rise above
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16 mL
26 mL
36 mL
46 mL
13 A diagram of the actual size of a peppered moth wingspan is shown below.
An estimated length of the wingspan could be
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3 centimeters
3 grams
3 milliliters
3 kilometers
14 Which diagram represents an Erlenmeyer flask?
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15 A laboratory procedure calls for heating 50 milliliters of a sugar solution to 60°C. Which piece of laboratory equipment will not
be needed?
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protective eyewear
ruler
thermometer
graduated cylinder