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SENIOR ONE: ASSESSMENT ONE 21ST/03/2025

Total questions: 146

Worksheet time: 2hrs 14mins

Name
Class
Date
1.
What is diffusion?
a)
when molecules move 
b)
when molecules move from a high concentration to a low concentration.
c)
no movement 
d)
molecules move everywhere
2.
molecules move from a 
a)
high concentarion to low concentartion
b)
up and down
c)
left to right
d)
no movement
3.
Where is there a low concentration of dye?
a)
at the bottom of cup
b)
in the color
c)
at the top of cup 
d)
no concenteraion gradient
4.
Where is there a low concentration of perfume?
a)
in the bottle
b)
on the hand
c)
in the room
d)
in the top
5.
The picture below is an example of _________________.
a)
osmosis
b)
isotonic
c)
diffusion
d)
active transport
6.
The movement of particles from high concentration to low concentration is called?
a)
Photosynthesis
b)
Diffusion
c)
Osmosis
d)
Eating
7.
The Law of Conservation of Matter states:
a)
Matter can be created or destroyed but not transformed 
b)
Matter cannot be created or destroyed, it can only transformed
c)
Matter can't be created, destroyed or transformed
8.
According to the Law of Conservation of mass (matter), the amount of matter before and after a reaction must be the same. Which statement below is true?
a)
The total amount of matter is conserved
b)
The total amount of matter is less after a reaction
c)
The total amount of matter is more after a reaction
9.
Can matter be created or destroyed?
a)
Yes, it can be created.
b)
Yes, it can be destroyed.
c)
No, matter is always conserved
d)
None of these
10.
The mass after a physical change, such as ice melting into water, stays the same
a)
True
b)
False
11.
The total amount of matter (atoms) before and after a chemical reaction (change), remains the same.
a)
True
b)
False
12.
Where is there a high concentration of bbq smoke?
a)
In the bbq pit
b)
In the house
c)
Two streets over
d)
In the atmosphere
13.

Select the 4 correct answers. A particle _____.

a)

can be a solid.

b)

can be a liquid.

c)

can be a gas.

d)

has random motion.

e)

remains stationary.

14.

Which diagram best shows the end result of diffusion?

a)

F

b)

H

c)

G

d)

J

15.

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

a)

High, low

b)

Low, high

c)

Low, low

d)

High, high

16.

Where is there a low concentration of dye?

a)

at the bottom of cup

b)

in the color

c)

at the top of cup

d)

no concentration gradient

17.

What is diffusion?

a)

when molecules move

b)

when molecules move from a high concentration to a low concentration.

c)

no movement

d)

molecules move everywhere

18.

Diffusion occurs only in solids

a)

True

b)

False

19.

How long does diffusion last?

a)

Until the concentration of particles in the system is equal

b)

Until a region in the system has a smaller concentration of particles than the other

c)

Until a region in the system has a greater concentration of particles than the other

d)

Until the particles disappear from the system

20.

Objects gain heat and _________.

a)

expand

b)

contract

21.

The liquid in the thermometer rises when it is placed in the hot water because ___________.

a)

it gains heat from the hot water and expands.

b)

loses heat from the hot water and contracts.

c)

the surrounding air is too warm.

d)

the liquid is boiling.

22.

When do molecules stop moving or vibrating?

a)

When equilibrium is reached

b)

Never

c)

When the temperature is below 0 degrees Celsius

d)

When the substance they are part of becomes a solid

23.

What happens to the coffee particles when coffee is added to hot water?

a)

They sink to the bottom of the cup

b)

They spread out

c)

They clump together

d)

They freeze

24.

What happens to particles when they are heated?

a)

They speed up and spread out

b)

They slow down and compress

c)

They stop moving

d)

They move closer together and speed up

25.

How do particles move during diffusion?

a)

high concentration to low concentration

b)

low concentration to high concentration

26.

What was the independent variable in your experiment?

a)

the tea bag

b)

the temperature of the water

c)

the time it took to diffuse

d)

the colour of the water

27.

What was a control variable in your experiment?

a)

the time it took to change colour

b)

the temperature of water

c)

the volume of water

28.

What happens to the rate of diffusion as temperature increases

a)

speeds up

b)

slows down

c)

stays the same

29.

Why does increasing temperature increase rate of diffusion?

a)

particles have less energy so move quicker

b)

particles have more energy so move quicker

c)

particles have less energy so move slower

d)

particles have more energy so move slower

30.

To investigate the effect of temperature on speed of diffusion you need to change the

a)

time taken for cross to disappear

b)

colour

c)

type of tea

d)

temperature

31.

To investigate the effect of temperature on speed of diffusion you need to measure the

a)

time taken for cross to disappear

b)

temperature

c)

colour

d)

type of tea bag

32.

Diffusion requires energy

a)

true

b)

false

33.

Diffusion is the movement of ___________ from high to low concentration

a)

tea

b)

particles

c)

water

34.

What part of your investigation was recorded in the table?

a)

explanation

b)

conclusion

c)

results

d)

plan

35.

If you were investigating the effect of shape of tea bag on rate of diffusion you would change the...

a)

temperature

b)

time taken for cross to disappear

c)

shape of tea bag

d)

volume of water

36.

If you were investigating the effect of shape of tea bag on rate of diffusion you would measure the...

a)

temperature

b)

time taken for cross to disappear

c)

shape of tea bag

d)

volume of water

37.

______ is the random movement and mixing of particles.

a)

Spreading

b)

Stirring

c)

Diffusion

d)

States

38.

In a solid, particles ________________

a)

move freely

b)

slide past one another

c)

have large amount of energy

d)

do not have much room to move

39.

How do particles act in a liquid?

a)

Every particle stays in one spot.

b)

Particles spread far apart from one another.

c)

Particles slide past one another

d)

Particles squeeze together to fit into small spaces.

40.

When do molecules stop moving or vibrating?

a)

When equilibrium is reached

b)

Never

c)

When the temperature is below 0 degrees Celsius

d)

When the substance they are part of becomes a solid

41.

From fastest to slowest rate of diffusion, which of the following is in the correct sequence?

a)

Solids, liquids, gases

b)

Liquids, gases, solids

c)

Gases, liquids, solids

d)

Gases, solids, liquids

42.

Which of the following will diffuse the fastest?

a)

A tablespoon of sugar in a glass of water

b)

Heat through a solid piece of steel

c)

A pinch of salt in a glass of water

d)

The smell of bacon cooking throughout a room

43.

What does a 'region with high concentration' mean?

a)

An area with a SMALL number of particles

b)

An area with a LARGE number of particles

c)

An area with an UNEVEN number of particles

d)

An area with no particles

44.

What does “area of high concentration” mean?

a)

Spread out

b)

Tightly packed together

c)

Uncrowded

d)

Spacious

45.

An increase in temperature does what to diffusion?

a)

Speeds it up

b)

Slows it down

c)

Nothing

d)

Stops it all together

46.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
47.

Which gases move into and out of the blood at the lungs by diffusion

a)

Nitrogen and Oxygen

b)

Oxygen and Carbon Dioxide

c)

Nitrogen and Carbon Dioxide

d)

Argon and Nitrogen

48.

What is Physical Chemistry?

a)
Physical chemistry is the study of the physical properties and behavior of matter, combining principles of physics and chemistry.
b)
Physical chemistry focuses solely on chemical reactions.
c)
Physical chemistry is the study of living organisms.
d)
Physical chemistry is a branch of biology that examines cellular processes.
49.

If a fire erupts, immediately

a)

notify the teacher

b)

run for the fire extinguisher

c)

throw water on the fire

d)

open the windows

50.

goggles are worn in the lab..

a)

to avoid eye strain

b)

to improve your vision

c)

only if you do not have glasses

d)

any time chemicals, heat, or glassware are used

51.

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

a)

figure it out as you do the lab

b)

try several methods until something works

c)

ask the teacher before proceeding

d)

skip it and go on to the next part

52.

After completing an experiment, all chemical wastes should be

a)

left at your lab station for the next class

b)

disposed of according to your teacher's directions

c)

dumped in the sink

d)

taken home

53.

You have been injured in the lab, first you should..

a)

visit the school nurse after class

b)

see a doctor after school

c)

tell the teacher

d)

apply first aid yourself

54.

Long hair in the lab must be

a)

cut short

b)

held away from the experiment with one hand

c)

always neatly groomed

d)

tied back behind your head

55.

Which of the following should NOT be worn during a laboratory activity?

a)

loose clothing

b)

dangling jewelry

c)

sandals

d)

all of the above

56.

Horseplay, practical jokes, or pranks in the classroom are..

a)

always against the rules

b)

okay

c)

not dangerous

d)

okay if you are working alone

57.

If a piece of equipment is not working properly, stop, turn it off, and tell

a)

the principal

b)

your lab partner

c)

your best friend in the class

d)

the teacher

58.

When you finish working with chemicals or other lab substances, always

a)

treat your hands with skin lotion

b)

wash your hands with warm soapy water

c)

wipe your hands on a towel

d)

wipe your hands on your clothes

59.

The following activity is allowed in the lab

a)

chewing gum

b)

eating

c)

drinking

d)

none of the above

60.

Before you leave the science room, you should

a)

clean your work area and equipment

b)

return all equipment to the proper storage area

c)

wash your hands with soap and water

d)

all of the above

61.

All chemicals in the lab (including food stuff and store-bought chemicals) should be treated as if they could be hazardous (dangerous)

a)

True

b)

False

62.

Work areas should be kept clean and tidy.

a)

True

b)

False

63.

Laboratory work may be started immediately upon entering the laboratory even if the teacher is not yet present.

a)

True

b)

False

64.

Never remove chemicals or other equipment from the lab.

a)

True

b)

False

65.

Read all procedures thoroughly before performing a laboratory investigation

a)

True

b)

False

66.

All non-approved experiments are prohibited (not allowed)

a)

True

b)

False

67.

When a demonstration is done virtually, should you recreate it at your house?

a)

Yes

b)

No

68.

You are allowed to enter the chemical storage area any time you need to get an item.

a)

True

b)

False

69.
If you accidentally wear contact lenses in the lab, what should you do?
a)
A. Not tell anyone
b)
B. Not wear goggles
c)
C. Tell the teacher
d)
 D. Borrow someone else's glasses
70.
If a lab fire erupts, immediately:
a)
 A. Notify (or tell) your teacher
b)
B. Run and scream
c)
C. Throw water at the fire
d)
 D. Open the windows
71.
Why are approved eye protection devices (such as goggles) are worn in the lab?
a)
A. To improve your vision
b)
B. To make you look like a bug
c)
 C. To give you headaches
d)
 D. To protect eyes around chemicals, heat, or glassware
72.
Personal eyeglasses provide as much protection as:
a)
A. A shield
b)
B. Goggles
c)
  C. A mask
d)
 D. None of the above
73.
You are working in the lab using glassware. Your partner drops a glass beaker and it shatters. A piece of glass gets in his eyes. What should he have been wearing?
a)
A. Gloves
b)
B. Sun glasses
c)
C. Safety Goggles
d)
 D. A lab aporn
74.
You are in lab and your partner accidentally gets their hair stuck in a triple beam balance. What should have your partner done?
a)
  A. Worn a hat in class
b)
 B. Skipped class
c)
 C. Got a hair cut
d)
D. Tied/pulled their hair back
75.
If you have been injured in the lab, what should you do first?
a)
A. Apply the first aid yourself
b)
B. Go to doctor after school in a few hours
c)
C Tell your science teacher immediately
d)
D. Not tell anyone
76.
What should you do when gathering materials for an experiment?
a)
 A. Read all directions carefully
b)
B. Check all materials for chips or cracks (or broken)
c)
Clean the materials if they seem dirty/used
d)
D. All of the above
77.
Flammable materials should never be dispensed (or used) near:
a)
A. An open door
b)
B. An open flame
c)
C.Another student
d)
D. A sink
78.
If you get something in your eyes, how long do you need to use the eyewash station?
a)
15 - 20 seconds
b)
5 minutes
c)
15 - 20 minutes
d)
Don't use the eyewash.
79.
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.
80.
You should read all instructions for a lab...
a)
only when you don’t know it.
b)
before you begin any part of the lab.
c)
as you perform the lab.
d)
after you set up the equipment.
81.
Horseplay or practical jokes in the laboratory are...
a)
always against the rules.
b)
okay.
c)
not dangerous.
d)
okay if you are working alone.
82.
You may eat or drink in the science laboratory...
a)
after you have washed your hands.
b)
on the days you are not doing a lab.
c)
only from the beakers.
d)
at no time unless given teacher approval.
83.
Safety 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 are used or glassware is heated.
84.
Which of the following should not be worn during laboratory activities?
a)
loose clothing
b)
dangling jewelry
c)
open-toed shoes
d)
all of the above
85.
You have been injured in the laboratory (cut, burn, etc.) The FIRST thing you should do is...
a)
visit the school nurse after class.
b)
see a doctor after school.
c)
tell the science teacher straight away.
d)
apply first aid to yourself.
86.
After completing an experiment in the lab, all chemical wastes should be:
a)
 poured down the sink.
b)
  disposed of according to the teacher's directions.
c)
thrown at other students.
d)
taken home to play with.
87.
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.
88.
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.
89.

I am a

a)

Beaker

b)

Test tube

c)

Pipette

d)

Erlenmeyer Flask

90.

What am I used for?

a)

To make observations.

b)

To roughly measure volume.

c)

To hold pencils

d)

To measure mass.

91.

What am I?

a)

Pipette

b)

Erlenmeyer Flask

c)

Test Tube

d)

Graduated Cylinder

92.

What am I used for?

a)

Measuring mass

b)

Measuring volume

c)

Heating chemicals

d)

Mixing chemicals

93.

What is the name of this U-Shaped line?

a)

Test tube

b)

Beaker

c)

Meniscus

d)

Water level

94.

What is the correct volume? (a)   mL

95.

What am I?

a)

Graduated cylinders

b)

Pipettes

c)

Test tubes

d)

Well plates

96.

What am I used for?

a)

To do general chemistry

b)

To hold liquids

c)

To heat liquids

d)

To measure volume

97.

This is a(n) (a)   .

98.

I am used to

a)

mix chemicals

b)

drink chemicals

c)

store chemicals

d)

measure volume

99.

True or False: One drop from me is equivalent to approximately 0.05 mL of liquid.

a)

True

b)

False

100.

I am a

a)

Pipette

b)

Beaker

c)

Well plate

d)

Graduated cylinder

101.

I am a (a)   .

102.

I am used to

a)

Mix and test chemicals

b)

Hold chemicals

c)

Make observations

d)

Measure mass and volume

103.

When working with chemicals, it is important to (a)   instead of smell the chemical directly.

104.

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

105.

What equipment allows you to see small objects?

a)

beaker

b)

compound light microscope

c)

flask

d)

test tube

106.

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

a)

test tube

b)

hot plate

c)

dropper

d)

beaker

107.

Which equipment heats objects with an open flame?

a)

hot plate

b)

thermometer

c)

bunsen burner

d)

beaker

108.

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

a)

dropper

b)

test tube

c)

graduated cylinder

d)

flask

109.
a)

evaporating dish

b)

watch glass

c)

mortar and pestle

d)

funnel

110.
a)

evaporation

b)

watch glass

c)

mortar and pestle

d)

funnel

111.
a)
crucible and cover
b)
cup and lid
c)
clay triangle
d)
evaporating dish
112.
a)
glass triangle
b)
funnel
c)
stirring rod
d)
buret
113.
a)
glass lens
b)
watch glass
c)
evaporating dish
d)
pestle
114.
a)
wire mesh
b)
wire gauze
c)
wire fence
d)
hot mitt
115.
Identify the equipment shown here:
a)
beaker
b)
Erlenmeyer flask
c)
Florence flask
d)
volumetric flask
116.

Identify the lab equipment in the picture.

a)

Test Tube Rack

b)

Test Tube Clamp with Spring

c)

Crucible Tongs

d)

Forceps

117.
Name the tool pictured
a)
Pipette
b)
Eye dropper
c)
Tweezer
d)
Forceps
118.
Identify the equipment shown here:
a)
crucible holder
b)
wire gauze
c)
clay triangle
d)
test tube holder
119.
Name this lab apparatus:
a)
test tube holder
b)
tongs
c)
thermometer
d)
test tube rack
120.

In physical changes the substance present is (a)   the same.

121.

In a chemical change new substances are formed during the (a)   .

122.
123.
124.
125.

What are reactants?

(a)  

126.

What are Products?

(a)  

127.

Chemical reactions can combine certain _______.

a)

Products

b)

Compounds

c)

Reactants

d)

Elements

128.

Write a safety Precaution that should be taken before doing the a chemical reaction in the left.

(a)  

129.

Magnesium and Oxygen make up

a)

Mgp

b)

Mgi

c)

Mgo

d)

Mga

130.

What are the 3 types of fuels?

a)

Solid fuel,liquid fuel and fuel

b)

Solid fuel,liquid fuel and Heat fuel

c)

Solid fuel,liquid fuel and 95 fuel

d)

Solid fuel,liquid fuel and Gaseous fuel

131.

Give a example of Gaseous fuel

(a)  

132.

2 Examples for liquid fuel.

(a)  

133.

3 examples for solid fuels.

a)

wood,charcoal,

corn

b)

wood,Carbon,

corn

c)

wood,Plastic,

corn

d)

wood,chocolate,

corn

134.
135.

Name the fire extinguisher/extinguishers.

a)

Heat

b)

Water

c)

Fuel

d)

Carbon-dioxide

136.

______ is the random movement and mixing of particles.

a)

Spreading

b)

Stirring

c)

Diffusion

d)

States

137.

In a solid, particles ________________

a)

move freely

b)

slide past one another

c)

have large amount of energy

d)

do not have much room to move

138.

How do particles act in a liquid?

a)

Every particle stays in one spot.

b)

Particles spread far apart from one another.

c)

Particles slide past one another

d)

Particles squeeze together to fit into small spaces.

139.

When do molecules stop moving or vibrating?

a)

When equilibrium is reached

b)

Never

c)

When the temperature is below 0 degrees Celsius

d)

When the substance they are part of becomes a solid

140.

From fastest to slowest rate of diffusion, which of the following is in the correct sequence?

a)

Solids, liquids, gases

b)

Liquids, gases, solids

c)

Gases, liquids, solids

d)

Gases, solids, liquids

141.

Which of the following will diffuse the fastest?

a)

A tablespoon of sugar in a glass of water

b)

Heat through a solid piece of steel

c)

A pinch of salt in a glass of water

d)

The smell of bacon cooking throughout a room

142.

What does a 'region with high concentration' mean?

a)

An area with a SMALL number of particles

b)

An area with a LARGE number of particles

c)

An area with an UNEVEN number of particles

d)

An area with no particles

143.

What does “area of high concentration” mean?

a)

Spread out

b)

Tightly packed together

c)

Uncrowded

d)

Spacious

144.

An increase in temperature does what to diffusion?

a)

Speeds it up

b)

Slows it down

c)

Nothing

d)

Stops it all together

145.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
146.

Which gases move into and out of the blood at the lungs by diffusion

a)

Nitrogen and Oxygen

b)

Oxygen and Carbon Dioxide

c)

Nitrogen and Carbon Dioxide

d)

Argon and Nitrogen

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