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2025 Sem 1 Chemistry Test

Total questions: 106

Worksheet time: 4hrs 35mins

Name
Class
Date
1.
Approved eye protection devices (such as goggles) are worn in the laboratory
a)
 to avoid eye strain
b)
to improve your vision
c)
only if you don’t have corrective glasses
d)
 any time chemicals, heat or glassware are used
2.
You are heating a substance in a test tube. Always point the open end of the tube 
a)
away from all people
b)
toward another classmate
c)
toward your lab partner
d)
toward yourself
3.
Never leave a lit burner unattended.
a)
True
b)
False
4.

What is used to measure (but not precise), heat, and mix large amounts of liquids?

a)

beaker

b)

flask

c)

test tube

d)

graduated cylinder

5.

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

a)

test tube

b)

beaker

c)

flask

d)

graduated cylinder

6.

Which equipment measures temperature in liquid or gas, and measures in degrees Celsius?

a)

hot plate

b)

beaker

c)

thermometer

d)

bunsen burner

7.

Which equipment heats liquids and some stir liquids?

a)

beaker

b)

graduated cylinder

c)

flask

d)

hot plate

8.

Which equipment holds liquids and allows reactions in a small space?

a)

test tube

b)

hot plate

c)

dropper

d)

beaker

9.

Which equipment heats objects with an open flame?

a)

hot plate

b)

thermometer

c)

bunsen burner

d)

beaker

10.

Which equipment allows you to drop a small amount of liquid?

a)

dropper

b)

test tube

c)

graduated cylinder

d)

flask

11.

Why is a graduated cylinder more accurate than a beaker?

a)

A graduated cylinder is made of glass.

b)

It has been to school and graduated. :)

c)

It has more marks for measurement because it is tall and skinny.

d)

A beaker does not have markings.

12.

slender tube attached to a bulb, used for transferring or measuring out small quantities of liquid, especially in a laboratory

a)

pipette

b)

graduated cylinder

c)

beaker

13.

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

a)

pipette

b)

funnel

c)

beaker

14.

a form of protective eyewear that usually enclose or protect the area surrounding the eye

a)

funnel

b)

lab glasses

c)

contact lenses

15.
a)
test tube rack
b)
test tube holder
c)
wire holder
d)
utility clamp
16.
a)
wire mesh
b)
wire gauze
c)
wire fence
d)
hot mitt
17.
a)
glass lens
b)
watch glass
c)
evaporating dish
d)
pestle
18.
Identify the equipment shown here:
a)
beaker
b)
Erlenmeyer flask
c)
Florence flask
d)
volumetric flask
19.
a)

Scissors

b)

beaker tongs

c)

forceps

d)

tweezers

20.
a)

iron ring

b)

ring stand

c)

face mask

d)

Bunsen burner stand

21.
a)

Scale

b)

Triple Beam Balance

c)

See Saw

d)

Spring Scale

22.

What is this?

a)

Test Tube Brush

b)

Eyebrow Brush

c)

Hair Brush

d)

Brush

23.

What is this?

a)

Stirring Rod

b)

Spatula

c)

Forceps

d)

Tongs

24.

What is this?

a)

Spatula

b)

Tongs

c)

Forceps

d)

Stirring Rod

25.
Used to hold a crucible while it is being heated
a)
Mortar and pestle
b)
Condenser
c)
Clay triangle
d)
Utility clamp
26.
Used to close flasks or test tubes to prevent evaporation of liquids or escape of gases
a)
Pipette bulbs
b)
Rubber stoppers
c)
Burets
d)
Utility clamps
27.

Identify the lab equipment in the picture.

a)

Test Tube Rack

b)

Test Tubes

c)

Storage Unit

d)

Wooden Rack

28.

Imagine you're a tiny astronaut exploring the universe. You come across something that has mass and occupies space. What would you call it?

a)

A burst of energy

b)

A piece of matter

c)

A volume knob

29.

Imagine you're a detective! How would you describe the process of using one or more of your senses to gather clues?

a)

Is it inferring?

b)

Or, predicting?

c)

Maybe, classifying?

d)

No, it's observing!

30.

Let's play a game! Can you guess which type of observations deal with numbers or amounts?

a)

Quantitative observations

b)

Qualitative observations

c)

Classifying

d)

Inferring

31.

Imagine you're a detective and you're observing a crime scene. You're making observations that involve descriptive language and words. What kind of observations are you making?

a)

Are you doing Science?

b)

Are you making Qualitative observations?

c)

Are you predicting something?

d)

Are you making Quantitative observations?

32.

Ready for a brain teaser? Can you tell me what the scientific method is?

a)

Is it a systematic procedure for how to conduct a scientific experiment?

b)

Or maybe it's the process of solving a problem?

c)

Could it be a way of making non-scientific observations?

d)

Or is it a way to summarize findings from multiple investigations?

33.

Imagine you're a scientist conducting an experiment. How would you describe the 'dependent variable' in your study?

a)

It's the factor I'm measuring, or the 'effect' in my experiment.

b)

It's the factors that stay the same in my experiment, used for comparison.

c)

It's the factor I choose to change, or the 'cause' in my experiment.

d)

It's either x, y, or z.

34.

Match the following

a)

Scientific theory

1.

Explains why or how something happens in nature

b)

Scientific law

2.

Describes what happens in nature

c)

Scientific model

3.

representation of a real event

d)

Hypothesis

4.

a proposed explaination, starting point of an experiment

35.

What is a manipulated variable (independent variable)?

a)

the variable that changes as a result of the experiment

b)

the variable that the scientist changes

c)

the evidence

d)

the quantitative observation

36.

What is chemistry?

a)

the study of composition of matter and changes in energy

b)

the study of the composition of numbers and the changes they undergo

c)

the study of the composition of matter and the changes it undergoes

d)

the study of matter and energy and their interactions

37.

Organic chemistry is the study of

a)

chemicals that contain carbon

b)

organs

c)

chemicals not containing carbon (nonliving things)

d)

processes that take place in living organisms

38.

What is/are the controlled variable(s)?

a)

Variable(s) that you keep the the same

b)

Variable(s) that you change during an experiment

c)

Variable that is being observed

d)

Variable that is in control

39.

Physical chemistry is the study of

a)

the mechanism, rate and energy transfer that occurs when matter undergoes a change

b)

the composition of matter

c)

the processes that take place in living organisms

d)

the transfer that occurs when matter changes

40.

Analytical Chemistry is the study of

a)

the mechanism, rate, and energy transfer that occurs when matter undergoes a change.

b)

analytical matter

c)

the composition of matter

d)

the composition of energy

41.

Inorganic Chemistry is the study of

a)

chemicals that contain carbon

b)

processes that take place in living organisms

c)

chemicals that do not contain carbon (nonliving things)

d)

chemicals that contain carbon in nonliving things

42.

Pure chemistry is

a)

the pursuit of knowledge for its own sake

b)

research that is directed toward a practical goal or application

c)

the pursuit of chemical knowledge for its own sake

d)

pure chemical knowledge

43.

Applied chemistry is

a)

research that is directed toward chemical knowledge

b)

the pursuit of chemical knowledge for its own sake.

c)

applying chemistry to research

d)

research that is directed toward a practical goal or application

44.

Technology is

a)

allows humans to do things that would otherwise be impossible

b)

the means by which a society provides its members with those things needed and desired

c)

allows humans to do some things more quickly and with less effort

d)

all of the above

45.

An hypothesis is

a)

an explanation or fact

b)

a proposed explanation or educated guess

c)

a variable that you change during an experiment (manipulated variable)

d)

a variable that is observed during an experiment (responding variable)

46.

A scientific law

a)

is a well tested explanation for a broad set of observations

b)

is a concise statement that summarizes the results of a few observations and experiments

c)

is a concise statement that summarizes the results of many observations and experiments

d)

applies to a small number of events

47.

A theory

a)

is a well tested explanation for a broad set of observations

b)

is a well tested explanation for a few observations

c)

is a concise statement that summarizes the results of many observations and experiments

d)

applies to a small number of events

48.

The word "chemistry" comes from the word "alchemy." Alchemists tried to change other metals into gold and

a)

practiced "chemistry" as a science of measurement

b)

developed tools and techniques for working with chemicals that we still use today

c)

provided a logical set of explanations for the changes in matter they observed

d)

based their experiments on experimental evidence

49.

A characteristic of matter that can be observed or measured without changing the identity of matter and is determined by your senses.

a)

matter

b)

physical property

c)

chemical property

d)

density

50.
What are the two types of Mixtures
a)

Elements and Subatomic Particles

b)

Protons and Electrons

c)

Atoms and Compounds

d)

Homogenous and Heterogeneous

51.

Which of the following are Intensive Properties?​ ​ ​ ​

a)
Luster
b)
Boiling Point
c)
Melting Point
d)
Temperature
e)
Size
52.

When a substance contains more than one kind of particle it is called:

a)

a mixture

b)

a pure substance

c)

a molecule

d)

an element

53.

What is another name for a homogeneous mixture?

a)

Solute

b)

Solution

c)

Heterogeneous mixture

d)

Solvent

54.

Match the following

a)
1.

particles of a solid

b)
2.

particles of a liquid

c)
3.

particles of a gas

55.

Select all of these that keep their own shape:

a)

solid

b)

liquid

c)

gas

56.
Two of more substances that are mixed together but can be separated is...
a)
solutes
b)
solutions
c)
liquids
d)
mixtures
57.
What is a homogeneous mixture?
a)
a mixture that is the same throughout.
b)
a mixture that is made up of one type of atom.
c)
a mixture that is made up of one type of compound
d)
a mixture that cannot be separated through physical changes
58.
To separate a mixture of salt and water what separation method is used?
a)
Filtration
b)
Distillation
c)
Chromatography
d)
Evaporation
59.

This technique is based on the differences of the boiling point of the substance in the mixture.

a)

decantation

b)

distillation

c)

filtration

d)

chromatography

60.

Which method is this a picture of?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

61.

A method of separation in which a machine spins at high speeds to separate substance by their densities.

a)

Distillation

b)

Centrifugation

c)

Chromatography

d)

Magnetism

62.

Which separation technique would be most effective to see what different pigments make up a black marker?

a)

Centrifugation

b)

Distillation

c)

Chromatography

d)

Magnetism

63.
If I added 27 grams of salt to water and separated the solution with a hot plate, what amount of salt would be left behind?
a)
20 grams
b)
0 grams
c)
27 grams
d)
10 grams
64.

All matter can be classified as _________.

a)

elements or compounds

b)

compounds or mixtures

c)

pure substances or mixtures

65.

Substances that are made up of ONLY one type of atom (element) or compound.

a)

Heterogeneous mixture

b)

Pure substance

c)

Suspension

d)

Homogeneous mixture

66.
What is matter?
a)
Anything that has mass and occupies space
b)
Anything that has mass
c)
Anything that is made of air
d)
ALL of them 
67.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

68.

A row on the Periodic Table of Elements

a)

family

b)

period

c)

row

d)

isotope

69.
Groups on the periodic table are __________.
a)
Horizontal Rows
b)
Vertical Columns
70.

What is the scientific name for salt?

a)

Sodium chloride

b)

Hydrochloric acid

c)

Acetic acid

d)

Potassium chloride

71.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
72.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
73.

How is a chemical change different from a physical change?

a)

there is no difference

b)

a physical change creates a new substance

c)

a chemical change creates a new substance

74.

A precipitate is a ___________ that forms when 2 liquids react together.

a)

solid

b)

liquid

c)

gas

d)

plasma

75.

Match the following

a)

Physical change

(Shape)

1.

Cutting paper

b)

Physical change

(solubility)

2.

Dissolving

Kool-Aid

c)

Chemical Change

(Flammability)

3.

Lighting a match

d)

Chemical Change

4.

Creating a new substance

e)

Both a Physical & Chemical change

5.

Bubbles

76.

Sodium and chlorine combine to form sodium chloride, or table salt. Sodium and chlorine are:

a)

Producers

b)

Products

c)

Reactionaries

d)

Reactants

77.

When sodium and chlorine combine to form sodium chloride, sodium chloride is the:

a)

Originator

b)

Reactant

c)

Product

d)

Produce

78.

4 grams of hydrogen and 32 grams of oxygen will combine to form:

a)

36 grams of water

b)

28 grams of hydroxide

c)

32 grams of oxygen

d)

36 grams of deuterium

79.

The Law of Conservation of Mass says that matter can neither be __________ or __________.

a)

created; destroyed

b)

recycled; renewed

c)

subtracted; added

d)

joined; separated

80.

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

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

81.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
82.
?
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
83.
The students measured length during a science experiement, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?
a)
15.79%
b)
18.75%
c)
2.25%
d)
18%
84.

How many sig figs are there?
300000000

a)
1
b)
9
c)
10
85.

How many sig figs are there?
7003

a)
1
b)
2
c)
3
d)
4
86.

How many sig figs are there?
0.0000073

a)
1
b)
2
c)
6
d)
7
87.

How many sig figs are there?
0.00230

a)
1
b)
3
c)
5
d)
6
88.

How many Significant Figures in the number below?
1.25 x 103

a)
5
b)
4
c)
6
d)
3
89.
Calculate 12.47 m ÷ 3.2 s and give your answer with the correct number of significant figures.
a)
4 m/s
b)
3.9 m/s
c)
3.90 m/s
d)
3.897 m/s
90.
Calculate 0.020 cm x 50 cm x 11.1 cm and give your answer with the correct number of significant figures.
a)
10 cm3
b)
11.1 cm3
c)
11 cm3
d)
11. cm3
91.
Which is most likely the length of a student’s textbook?
a)
30 centimeters
b)
30 millimeters
c)
30 hectometers
d)
30 meters
92.
When measuring the length of a paperclip, you would use what SI units?
a)
kilometers
b)
meters
c)
millimeters
d)
grams
93.

A system of units of measure widely accepted by the scientific community (SI for short)

a)

International System of Units

b)

World Wide Weight

c)

Science Instruments

d)

Use These Measures

94.

Which of these units would be best for measuring the distance between Columbus and Cincinnati?

a)

meter

b)

kilometer

c)

centimeter

d)

millimeter

95.

Which is the SI unit of measurement for energy?

a)

Joules

b)

Watts

c)

Moles

d)

Amps

96.

Convert 37⁰F to Celsius (5/9 x (0F - 32))

a)

1.6⁰C

b)

2.8 ⁰C

c)

5.0⁰C

d)

-13.5⁰C

97.

Convert 13°C to Fahrenheit (1.8 x 0C) + 32

a)

63.8°F

b)

84.6°F

c)

-9.4°F

d)

50°F

98.

200 Celsius is ? Kelvin (K = Celsius + 273)

a)

173 K

b)

473K

c)

273 K

d)

0 K

99.

Calculate the density of the rectangular prism

a)

2 g/cm3

b)

4 g/cm3

c)

6 g/cm3

d)

8 g/cm3

100.

Jack has a rock. The rock has a mass of 18g and a volume of 2cm3. What is the density of the rock?

a)

9 mL

b)

9 g/cm3

c)

36 g/cm3

d)
1/7 g/cm3
101.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
102.
Why do some substances float on water?
a)
they are warmer than water
b)
they are cooler than water
c)
they are more dense than water
d)
they are less dense than water
103.
What is the measuring unit for mass?
a)
centimeter 
b)
millimeter 
c)
grams 
d)
pounds
104.
Which units of measurement are used for volume?
a)
grams
b)
centimeters
c)
grams/milliliter
d)
milliliter
105.
What units are used to measure Density?
a)
cm3/g
b)
g
c)
g/cm3
d)
cm3
106.

If a block of wood has a density of 0.5 g/cm3 and a mass of 130 g, what is its volume?

a)

260 cm3

b)
0.005 cm3
c)
200.0 ml
d)
72 ml

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