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Worksheets

Lab Skills

Total questions: 50

Worksheet time: 32mins

Name
Class
Date
1.

Why is it important to know the names and appearance of lab equipment before doing laboratory work?

a)

So you will score higher on the lab test.

b)

So you can quickly obtain your laboratory supplies before lab.

c)

So you can follow the lab instructions clearly.

d)

So you can make sure everything has been cleaned before beginning the lab procedure.

2.

If you see something in the classroom or laboratory that is dangerous, tell the teacher

a)

When you have time

b)

At once

c)

After class

d)

After school

3.

The most important thing in laboratory experiments is:

a)

Getting done first.

b)

Getting the answer right.

c)

Safety.

d)

Penmanship.

4.
True or False: Long hair MUST be tied back during a laboratory investigation.
a)
True
b)
False
5.
Identify the primary function of the lab equipment seen in the image.
a)
Transfer small amounts of liquid
b)
Transfer large amounts of liquid
c)
Measure liquid volume
d)
Mixing liquid chemicals
6.

If you do not understand a direction or part of a lab procedure, you should

a)

skip it and move on

b)

ask your teacher or classmates

c)

try different things until something works

d)

figure it out as you do the lab

7.

What does this symbol indicate?

a)

Corrosive substances

b)

Wash your hands.

c)

Wear appropriate gloves.

d)

Bacteria are present.

8.
a)
Poison/Toxic
b)
Bio Hazard
c)
Radioactive
d)
Corrosive
9.

Identify the Image

a)

Radioactive

b)

Flammable

c)

Biological hazard

d)

Toxic

10.

What does this safety symbol mean?

a)

flammable

b)

oxidising

c)

hot

d)

explosive

11.
If you see a science experiment set up in the classroom...
a)
do not touch anything until instructed.
b)
immediately begin working on the lab.
c)
go and check all equipment.
d)
walk around and check each station.
12.
You are heating a piece of glass and now want to pick it up. You should... 
a)
pour cold water on it.
b)
use tongs.
c)
pick up the end that looks cooler.
d)
use a rag or paper towels.
13.
You should never ______ chemicals in the lab. 
a)
taste
b)
touch
c)
smell
d)
all of the above
14.
What is the name of the following tool?
a)
flask
b)
ruler
c)
balance
d)
beaker
15.

You are heating a substance in a test tube. The open end of the tube should be pointed

a)

away from all people

b)

toward another classmate

c)

toward your lab partner

d)

toward yourself

e)

toward the wall

16.

What does this safety symbol mean?

a)

Harmless to trees and fish

b)

Harmful to non living things

c)

Harmful to living things

d)

Harmless to non living things

17.

In the lab you should

a)

eat lunch

b)

drink coffee

c)

not wear loose clothing or jewelry

d)

run around

18.
When is it OK to eat or drink in the lab?
a)
Always
b)
Never
19.
Keeping your work area neat and clean is important because:
a)
My teacher is a neat-freak
b)
I won't lose my supplies in the clutter.
c)
It keeps the room from looking messy.
d)
It helps prevent accidents.
20.
Helping to clean up the lab or classroom is the job of
a)
old students.
b)
transfer students.
c)
each and every student.
d)
only the teacher.
21.

Which is NOT a safe way to handle chemicals in the lab?

a)

Handle chemicals in small containers.

b)

Mix chemicals when your instructor tells you to do so.

c)

Read and reread chemical labels.

d)

Place your face close to the chemicals that you are working with.

22.

What does this symbol warn us about?

a)

Health hazard

b)

Lung disease

c)

Irritant

d)

Corrosive

23.

What does this symbol stand for?

a)

Flammable

b)

Oxidising

c)

Gas under pressure

d)

Explosive

24.

What does this symbol warn us of?

a)

Danger

b)

Alert

c)

Toxic

d)

Irritant/harmful

25.

What equipment allows you to measure liquid's volume and measures in milliliters?

a)

test tube

b)

beaker

c)

flask

d)

graduated cylinder

26.

Which equipment heats objects with an open flame?

a)

hot plate

b)

thermometer

c)

bunsen burner

d)

beaker

27.

a shallow, circular, transparent dish with a flat lid, used for the culture of microorganisms

a)

Petri Dish

b)

funnel

c)

Erlenmeyer Flask

28.

instrument used to transfer liquids or fine-grained materials into containers with small openings. Also used for filtration

a)

pipette

b)

funnel

c)

beaker

29.
a)

evaporating dish

b)

watch glass

c)

mortar and pestle

d)

funnel

30.
a)
test tube rack
b)
test tube holder
c)
wire holder
d)
utility clamp
31.
a)
wire mesh
b)
wire gauze
c)
wire fence
d)
hot mitt
32.
a)
test tube holder
b)
test tube rack
c)
test tube tray
d)
test tube dryer
33.
Identify the equipment shown here:
a)
beaker
b)
Erlenmeyer flask
c)
Florence flask
d)
volumetric flask
34.
What is this?
a)
A Pipet
b)
A Thermometer
c)
A Triple Beam Balance
d)
A Funnel
35.
a)
crucible and cover
b)
cup and lid
c)
clay triangle
d)
evaporating dish
36.
You were investigating whether or not plants need light to grow. Plant A and Plant B were grown next to a window with plenty of light. Plant C and Plant D were grown in a dark cabinet. What is the DEPENDENT variable in this experiment?
a)
Light availability
b)
Amount of water
c)
Type of fertilizer
d)
Growth of plants
37.
You were investigating whether or not plants need light to grow. Plant A and Plant B were grown next to a window with plenty of light. Plant C and Plant D were grown in a dark cabinet. What is the INDEPENDENT variable in this experiment?
a)
Light availability
b)
Amount of water
c)
Type of fertilizer
d)
Growth of plants
38.

The variable we CHANGE.

a)

Dependent

b)

Independent

c)

Constant

39.

The variables that stay the SAME for both groups.

a)

Dependent

b)

Independent

c)

Constant

40.

The variable we MEASURE.

a)

Dependent

b)

Independent

c)

Constant

41.

If I CHANGE the temperature of my butter in cookies, what variable would that be?

a)

Dependent

b)

Independent

c)

Constant

42.

An educated guess is called a...

a)

Constant

b)

Hypothesis

c)

Experiment

43.

If I MEASURE the height of my cookies after I bake them with different butter, which variable would this be?

a)

Dependent

b)

Independent

c)

Constant

44.

The group I will keep the SAME

a)

Control

b)

Experimental

45.

IF I wear sunscreen, THEN I will not burn my skin, BECAUSE I was protected from the Sun's rays. What is this?

a)

Control Group

b)

Experimental Group

c)

Hypothesis

46.

The group being tested with the independent variable is the __ group

a)

Control

b)

Constant

c)

Experimental group

d)

None of these

47.

In a controlled experiment, how many independent variables can be tested at a time?

a)

one

b)

none

c)

two or more

d)

how ever many makes sense.

48.

Summary of an experiment

a)

Hypothesis

b)

Procedure

c)

Conclusion

d)

Purpose

49.

The variables that stay the SAME for both groups.

a)

Dependent

b)

Independent

c)

Constant

50.

The facts and observations gathered during an experiment:

a)

data

b)

analysis

c)

evaluation

d)

problems

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