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water and solution

Total questions: 150

Worksheet time: 3hrs 30mins

Name
Class
Date
1.

Give the meaning of solvent

a)

A homogenus mixture from two or more substances

b)

Substance that dissolves in other substances

c)

Solids that do not dissolve in liquids

d)

Substance that dissolves other substances

2.

Give the meaning of solution

a)

A homogenus mixture from two or more substances

b)

Substance that dissolves in other substances

c)

Solids that do not dissolve in liquids

d)

Substance that dissolves other substances

3.

Give the meaning of solute

a)

A homogenus mixture from two or more substances

b)

Substance that dissolves in other substances

c)

Solids that do not dissolve in liquids

d)

Substance that dissolves other substances

4.

What is these phrases suspended particles means

a)

A homogenus mixture from two or more substances

b)

Substance that dissolves in other substances

c)

Solids that do not dissolve in liquids

d)

Substance that dissolves other substances

5.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
6.
The attraction that causes water and other liquids to form drops is called ________________. This is also water’s ability to be attracted to other water molecules.
a)
adhesion
b)
capillary action
c)
cohesion
d)
surface tension
7.

In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

a)

stir the powder in the liquid

b)

set the liquid at lower temperature

c)

replace the powder with same material but in cubes

d)

store the mixture in a dark place

8.

A solution that is considered dilute would be....

a)

Dark in color

b)

Have more than maximum amount of solute that can dissolve

c)

Have a large amount of solute

d)

Have a small amount of solute

9.

When a solvent contains as much of the solute as it can hold, the solution is said to be

a)

concentrated

b)

diluted

c)

saturated

d)

unsaturated

10.

A solution in which no more solute can be dissolved.

a)

supersaturated

b)

saturated

c)

concentrated

d)

dilute

11.

Which of the following usually makes a substance dissolve faster in a solvent?

a)

Stirring

b)

Raising the temperature

c)

Increasing the surface area

d)

All the other answers are correct

12.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
13.

Water is a universal solvent because it...

a)

It can be found anywhere

b)

Dissolves just a few substances

c)

Dissolves all substances

d)

Dissolves most substances

14.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
15.
Which statement correctly describes the 2 electrodes?
a)
The anode is negative and the cathode is positive
b)
The anode and cathode are both positive
c)
The anode is positive and the cathode is negative
d)
The anode and cathode are both negative.
16.
What is the chemical formula for water?
a)
2HO
b)
H2O
c)
HO2
d)
H2O2
17.
Which letter represents hydrogen?
a)
A
b)
B
c)
C
d)
D
18.
Why can some insects walk on water?
a)
The water sticks to the insect.
b)
The insect is too light to break the surface tension.
c)
The insect has hydrophobic oils on its legs.
d)
Insects can't walk on water.
19.

Humidity is...

a)

how fast air moves

b)

the amount of water vapor in the air

c)

the amount of heat in the air

d)

the amount of water surface expose to the air

20.

Ensure the following mixture is

a)

solvent

b)

solution

c)

suspension

d)

colloid

21.

In which beaker does salt dissolves faster?

a)

Hot water

b)

Room temperature

c)

Ice watet

22.

Why does salt dissolves faster in hot water?

a)

Hot water hive high kinetic energy to solvent and solute perticles

b)

More collision between solute and solvent particles

c)

Higher temperature gives more surgace area to the solute

23.

Why fine salt dissolves faster bin water compared to coarse salt?

a)

Fine salt has bigger total surface area exposed to water

b)

Fine salt has smaller total surgace arra exposed to water

24.
What does chlorination do to the water?
a)
Removes microorganisms
b)
Cleans the water
c)
Makes the water taste nice
d)
Removes twigs and sediment
25.

More than _______________ of Earth's surface is covered with water.

a)

60%

b)

70%

c)

65%

d)

80%

26.

Water has a high surface tension. Surface tension is a result of ______________________________ between the molecules of water at the surface that allows insects like daddy longlegs to stay afloat on the water.

a)

attractive force

b)

repulsive force

c)

cohesive force

d)

capillary force

27.

Adhesive force between water molecules and cell walls of ______________________ allow water to be drawn up from the roots to the leaves of plants. this phenomenon is known as capillary action.

a)

xylem

b)

floem

c)

tube

d)

vessel

28.

Water is a ____________________________ .

a)

mixture

b)

atom

c)

compound

d)

solid

29.

Water molecule is made of ___________ of hydrogen and __________________ atom of oxygen.

a)

one , two

b)

three , two

c)

two , one

d)

two , two

30.

Sublimation is a process of changes in the state of matter from ___________________________________________

a)

gas to solid

b)

solid to liquid

c)

liquid to gas

d)

gas to liquid

31.

These two processes absorbs heat energy during the changes in the state of matter.

a)

freezing and evaporation

b)

evaporation and condensation

c)

boiling and melting

d)

freezing and condensation

32.

During electrolysis the ___________________ gas is produced at the anode

a)

oxygen

b)

hydrogen

33.

During the electrolysis the ________________ gas is produced at cathode.

a)

oxygen

b)

hydrogen

34.

The impurities such salt when added to water will _______________ the freezing point of water.

a)

increase

b)

remain the same

c)

decrease

35.

The impurities such as sugar or salt will _____________________________________ the boiling point of the water.

a)

increase

b)

remain the same

c)

decrease

36.

Evaporation only occurs on the ___________________ of water

a)

bottom

b)

surface

c)

boiling point

37.

One of the characteristic below does not affect the rate of evaporation :

a)

humidity

b)

colour of the water

c)

total surface area of the water

d)

surrounding temperature

e)

movement of air speed

38.

Name two applications of evaporation of water:

a)

dried seafood

b)

obtaining sea salt

c)

soaking fruits in salt

d)

hydroelectric generation

39.

_________________________ is a substance that can dissolve in a liquid

a)

solute

b)

solvent

c)

solution

40.

________________________ is a liquid that dissolves a substance

a)

solute

b)

solvent

c)

solution

41.

______________________ is the mixture formed when a solute

dissolves in a solvent.

a)

solute

b)

solvent

c)

solution

42.

A ____________________________________ IS A CLOUDY MIXTURE FORMED FROM UNDISSOLVED SOLUTE PARTICLES IN A SOLVENT

a)

solute

b)

colloid

c)

suspension

d)

solubilty

43.

________________________ IS A MIXTURE OF TWO OR MORE SOLUTES DISPERSED EVENLY IN A SOLVENT AND IT IS AN INTERMEDIATE BETWEEN A SOLUTION AND A SUSPENSION

a)

solute

b)

colloid

c)

suspension

d)

solubity

44.

___________________________ method is not a water purification method.

a)

mixing salt

b)

boling water

c)

chlorination

d)

filtration

45.

Based on the diagram above these are the reasons why the water pollution occur except for _________________________

a)

using water filter at home

b)

using chemicals in agriculture

c)

using chemicals in industries and industrial waste

d)

domestic waste released to the river

46.

Answer true or false,

River water and sewage are natural water resources

a)

true

b)

false

47.

Answer true or false,

Alum and slaked lime are added in the coagulation tank

a)

true

b)

false

48.

Answer true or false,

Chlorination can remove impurities in the water

a)

true

b)

false

49.

Arrange the stages involved in the water purification system

a)

coagulation, sedimentation, oxidation, flouridation

b)

filtration,sedimentation, coagulation, chlorination

c)

filtration, coagulation, sedimentation, chlorination

d)

sedimentation, coagulation, filtration, chlorination

50.
A single part of a mixture or solution is called
a)
Mixture
b)
Substance
c)
Solution
d)
An item
51.
To break down and spread out evenly in a liquid
a)
Buoyancy
b)
Dissolve
c)
Mix
52.

A solution that contains all of the solute it can hold at a given temperature is

a)

diluted.

b)

saturated.

c)

supersaturated.

d)

unsaturated.

53.

Solution is a

a)

Mixture formed when solute dissolves in solvent

b)

Liquid that dissolves solute

c)

Substance dissolves in water

54.

3 types of solution are (a)   , concentrated and saturated

55.

In dilute solution, there are less amount of solute in the solvent

a)

True

b)

False

56.

Dilute solution ...

a)

Cannot dissolve anymore solutes

b)

Can dissolve less solutes

c)

Can dissolve more solutes

57.

Concentrated solution contain more solutes in the solvent.

a)

True

b)

False

58.

Diagram shows ..

a)

Dilute solution

b)

Concentrated solution

c)

Saturated solution

59.

Solute that dissolves inside solvent will produce

a)

Solution

b)

Suspension

60.

Diagram shows copper sulphate crystal (blue solid) added into water and produce

a)

Solution

b)

Suspension

61.

Diagram shows a process to seperate insoluble solute from the solution.

The process known as ...

a)

Chromatography

b)

Sedimentation

c)

Filtration

d)

Crystallisation

62.

Diagram shows a filtration process for water contain chalk powder. What is X ?

a)

Chalk powder

b)

Chalk solution

63.

If suspension left undisturbed ...

a)

There will be precipitate of insoluble substance form at the bottom of container

b)

There will be solution of insoluble solute formed

64.

Condition of the mixture inside suspension is

a)

Clear

b)

Cloudy

65.

Ensure the following mixture is

a)

solvent

b)

solution

c)

suspension

d)

colloid

66.

Ensure the following mixture is

a)

solvent

b)

solute

c)

suspended particles

d)

suspension

67.

Ensure the following mixture is

a)

Solute

b)

solvent

c)

solution

d)

colloid

68.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
69.
True or false water is a polar molecule? 
a)
True 
b)
False 
70.
The attraction that causes water and other liquids to form drops is called ________________. This is also water’s ability to be attracted to other water molecules.
a)
adhesion
b)
capillary action
c)
cohesion
d)
surface tension
71.
In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

a)
stir the powder in the liquid
b)
freeze the mixture
c)
add more powder to the liquid
d)
store the mixture in a dark place
72.
A solution that is considered dilute would be....
a)
Dark in color
b)
Have a strong scent
c)
Have a large amount of solute
d)
Have a small amount of solute
73.
When a solvent contains as much of the solute as it can hold, the solution is said to be
a)
supersaturated
b)
diluted
c)
saturated
d)
unsaturated
74.

Would sugar dissolve in gasoline?

a)

Yes

b)

No

75.

A solution in which no more solute can be dissolved.

a)

supersaturated

b)

saturated

c)

concentrated

d)

dilute

76.

Generally, the solubility of a solute goes up as the temperature increases.

a)

True

b)

False

77.

Which of the following usually makes a substance dissolve faster in a solvent?

a)

Stirring

b)

Raising the temperature

c)

Increasing the surface area

d)

All the other answers are correct

78.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
79.
Attractions between water molecules are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
80.
Water is a universal solvent because it...
a)
It can be found anywhere
b)
It freezes when it gets cold
c)
floats when frozen
d)
Dissolves most substances
81.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
82.
Which statement correctly describes the 2 electrodes?
a)
The anode is negative and the cathode is positive
b)
The anode and cathode are both positive
c)
The anode is positive and the cathode is negative
d)
The anode and cathode are both negative.
83.
Letter A is?
a)
evaporation
b)
transpiration
c)
condensation
d)
accumulation 
84.
Letter B is?
a)
evaporation
b)
transpiration
c)
condensation
d)
accumulation
85.
Letter C is?
a)
precipitation
b)
transpiration
c)
condensation
d)
accumulation
86.
Letter D is?
a)
precipitation
b)
transpiration
c)
condensation
d)
run off
87.
Letter F is?
a)
precipitation
b)
accumulation
c)
condensation
d)
run off
88.
What is the chemical formula for water?
a)
2HO
b)
H2O
c)
HO2
d)
H2O2
89.
Which letter represents hydrogen?
a)
A
b)
B
c)
C
d)
D
90.
Which letter represents oxygen?
a)
A
b)
B
c)
C
d)
D
91.
Why can some insects walk on water?
a)
The water sticks to the insect.
b)
The insect is too light to break the surface tension.
c)
The insect has hydrophobic oils on its legs.
d)
Insects can't walk on water.
92.
What are the three states of water found on Earth?
a)
solid, liquid & gas
b)
oceans, lakes & streams
c)
evaporation, transpiration
d)
rain, sleet & hail
93.

We can prevent water pollution by:

a)

Reduce the use of plastic.

b)

Properly dispose of chemicals.

c)

Clean up after your animals.

d)

All of the above

94.

3 things water pollution causes:

a)

Death of animals

b)

Habitat destroyed

c)

Humans sick

d)

Lung damage

95.

Humidity is...

a)

how fast air moves

b)

the amount of water vapor in the air

c)

the amount of heat in the air

d)

evaporation

96.

It is a maximum amount of solute that is soluble in 100 cm³ of solvent at a specific temperature.

This statement refers to

a)

Solute

b)

Solution

c)

Solubility

d)

Solvent

97.

Diagram shows experiment to study the effect if stirring and without stirring salts to its rate of solubility in water. Both beaker contain 100 cm³ of water.

What is the manipulated variable?

a)

Rate of solubility

b)

Temperature

c)

Volume if water

d)

Stirring and not stirring process

98.

Why does salt dissolves faster in hot water?

a)

Hot water hive high kinetic energy to solvent and solute perticles

b)

More collision between solute and solvent particles

c)

Higher temperature gives more surgace area to the solute

99.

What is the best way to purify water?

a)

Add salt

b)

Put inside the refrigerator

c)

Filtration or Boiling

d)

Find a very clean stream of water

100.

What does chlorination do to the water?

a)

kills microorganisms

b)

Cleans the water

c)

Makes the water taste nice

d)

Removes twigs and sediment

101.

Used to separate suspended particles from a liquid

a)

Filtration

b)

Distillation

c)

Crystallisation

d)

Evaporation

102.

methods of water purification are

a)

Boiling, filtration, Chlorination and distillation

b)

Boiling, filtration, evaporation and condensation

c)

Boiling , filtration, condensation and distillation

d)

Boiling, filtration, screening and chlorination

103.

what is added during coagulation process in water treatment plant

a)

alum and slaked lime

b)

florida

c)

chlorine

d)

calcium carbonate

104.

The correct order of water purification in water treatment plant are:

a)

filtration, coagulation, sedimentation, oxidation, chlorination and fluoridation

b)

filtration,oxidation, coagulation, sedimentation, filtration, chlorination and fluoridation

c)

Filtration, coagulation, sedimentation, filtration, chlorination and fluoridation

d)

Filtration,oxidation, coagulation, sedimentation, chlorination and fluoridation

105.

Water is a ...........................

a)

mixture

b)

element

c)

compound

106.

Water is made up of two different elements which are ...................... and ...........................

a)

1 molecule of hydrogen, 2 molecules of oxygen

b)

2 molecules of hydrogen, 1 molecule of oxygen

c)

1 carbon, 1 hydrogen and 1 oxygen

107.

Choose ALL the correct physical characteristics of water.

a)

Colourless

b)

Odourless

c)

Tasteless

d)

Liquid in room temperature

e)

No density

108.

The boiling point of pure water is ..............  °\degree C

a)

100

b)

102

c)

0

d)

-2

109.

The melting point of pure water is .................  °\degree C

a)

-2

b)

0

c)

2

d)

100

110.

The process of ice cube changes into water is know as ...................

a)

melting

b)

condensation

c)

boiling

d)

sublimation

111.

The process of water changes into water vapour is known as .......................... and .............................

a)

evaporation

b)

condensation

c)

boiling

d)

melting

112.

The process of water vapour changes into water is known as .............................

a)

sublimation

b)

boiling

c)

condensation

d)

freezing

113.

What is the ratio of hydrogen and oxygen in water molecule?

a)

2:1

b)

1:2

c)

2:2

d)

1:1

114.

What happen to the boiling of water if added with salt?

a)

Higher than 100 °\degree C

b)

Lower than 100 °\degree C

c)

100 °\degree C

115.

The melting becomes lower than 0  °\degree C  in water if there is the presence of salt. What is the term for salt it refers to?

a)

Impurities

b)

Densities

c)

Electrolysis

d)

Saltiness

116.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
117.
Why does water move from the roots to the leaves of plants?
a)
Water is pushed by solutes
b)
Capillary action pulls the water molecules like a chain
c)
Water is pulled by gravity
d)
Water’s cohesion causes it to “pull” towards the leaves
118.
The attraction that causes water and other liquids to form drops is called ________________. This is also water’s ability to be attracted to other water molecules.
a)
adhesion
b)
capillary action
c)
cohesion
d)
surface tension
119.
 Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens?
a)
The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together
b)
The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet
c)
The insects' feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water's surface
d)
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
120.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
121.

How to separate the elements of hydrogen and oxygen in water?

a)

Seiving

b)

Filtration

c)

Electrolysis

d)

Evaporation

122.
What is the name of the positive electrode?
a)
cathode
b)
anode
123.
What is the name of the negative electrode?
a)
cathode
b)
anode
124.
What is electrolysis?
a)
breaking down of a compound using a current
b)
making a compound using a current
125.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
126.
Why does ice float?
a)
As water freezes, it expands and its density decreases.
b)
As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
c)
As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
d)
As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
127.
True or false water is a polar molecule? 
a)
True 
b)
False 
128.
The attraction that causes water and other liquids to form drops is called ________________. This is also water’s ability to be attracted to other water molecules.
a)
adhesion
b)
capillary action
c)
cohesion
d)
surface tension
129.
Type of mixture in which all substances are evenly distributed is a?
a)
Solution
b)
Solute
c)
Solvent
130.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
131.
This is the part of a solution that dissolves
a)
Solute
b)
Solvent
c)
Solution
d)
Mixture 
132.

When Koolaid mix is light colored and tastes watery it is a _______ solution.

a)

concentrated

b)

dilute

133.

When a Koolaid mix in water is dark in color and very sweet it is a __________ solution.

a)

Concentrated

b)

Dilute

134.
mixture of two or more substances; dissolved particles are spread evenly throughout the mixture
a)
solvent
b)
solute
c)
mixture
d)
solution
135.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
136.
What is the reason why oil and water don't mix?
a)
Oil is too heavy to mix with water
b)
Water can only mix with polar molecules 
c)
Water can only mix with non-polar molecules
d)
Oil is too light to mix with water 
137.
Water is a universal solvent because it...
a)
It can be found anywhere
b)
It freezes when it gets cold
c)
floats when frozen
d)
Dissolves most substances
138.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
139.
Matter can be classified based on physical properties, including solubility in water. Which of these substances would be classified as soluble?
a)
salt
b)
sand
c)
iron
d)
pepper
140.
Ms. Heaton was baking dog treats when she accidentally poured salt into the water instead of sugar. (Whoops) How can Ms. Heaton separate the salt from the water?
a)
stirring the mixture
b)
Evaporating the mixture
c)
adding more water to the mixture
d)
adding more salt to the mixture
141.
Julio is making a solution using sugar and water. How will the properties of the sugar change when it is mixed with the water? 
a)
It will no longer appear as separate grains
b)
it will have a greater mass than before
c)
it will become magnetic
d)
it will change to a gas
142.
To dissolve in water.
a)
solubility
b)
density
c)
mixture
d)
evaporation
143.
A combination of rocks and water is an example of
a)
A mixture
b)
A solution 
c)
Dissovling
144.
Salt dissolves in water like ----
a)
Pepper dissolves in water
b)
Sugar dissolves in water
c)
Rocks dissolve in water
d)
Seeds dissolve in water
145.
A mixture of aluminum and steel can best be separated by ________________.
a)
adding water
b)
using a sieve
c)
density
d)
a magnet
146.
Students are conducting an experiment with salt water.  A large quantity of sand is added to the container of salt water.  What do you expect to observe?
a)
The salt floats to the top of the container.
b)
The sand dissolves.
c)
The sand settles to the bottom of the container.
d)
The salt and sand combine to form a solid.
147.
The boiling point and melting point of water are the same.
a)
False
b)
True
148.
Can you separate salt from water using filtration?
a)
yes
b)
no
149.
Name the separation method that causes wet clothes on a clothes line to dry
a)
Chromatography
b)
Filtration
c)
Distillation
d)
Evaporation
150.
Which of the following substances contain acid?
a)
An orange
b)
Bleach
c)
Distilled water
d)
Washing powder

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