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Year 7 Water Chemistry Revision Quiz Flashcards | StudBud
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Year 7 Water Chemistry Revision Quiz
Year 7 Water Chemistry Revision Quiz
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1
What is a characteristic of a liquid?
Particles move freely
Particles glide past each other
No definite shape or volume
Has a definite shape
2
What is flocculation?
if particle gets denser it should settle faster
a powder's tendency to form lumps or masses
iquids that don't behave according to equation are considered non-newtonian
particles come out of suspension to sediment under the form of floc/flake
3
What does miscible mean?
Acts as an acid and a base
Ionic
Two liquids will make a solution
Conservation of mass
4
What does dissolve mean?
to shake apart
to break apart in liquid
to put apart by throwing away
not being able to do something
5
What causes evaporation as water moves through the water cycle?
the sun's rays
vapor
wind
6
Charcoal adsorption is a good way to remove ...
Odors
Solids
Oil
Dissolved minerals
7
What is evaporation?
Water vapour meets cold air and change into liquid.
Water gets warm, changes from liquid water to water vapour.
Water freezes
Plants take water from the soil.
8
What is a liquid ?
have no shape but have a definite volume.
not fluid.
both have shape and a definite volume.
both don't have a definite volume and shape.
9
What does insoluble mean?
Can't dissolve in water.
It is a solution.
Can dissolve in water.
It changes temperature.
10
What is distillation?
When a liquid changes into a gas
When a gas changes into a liquid
Method used to separate a pure liquid from a mixture
A solid that dissolves
11
These elements react violently with water.
alkali metals
Noble Gases
alkaline earth metals
Halogens
12
what is distillation?
letting it sit over night
boil off mixture and condense at different temperatures
a high speed process
melting
13
What does the particle model predict about particle movement when a solid is heated?
The particles move closer and vibrate faster
The particles move further apart and vibrate faster
The particles vibrate faster in the same position
The particles move further apart and vibrate faster
14
What happens to water vapour in the atmosphere?
it is respired by animals
it percolates through rocks
it rises and cools to form water droplets in clouds
it is transpired from plants
15
What is adsorption
process of accumulating substances on a suitable interface
Theorem at equilibrium
material doing the adsorbing
material being adsorbed
16
What is "Residue"?
B. What's left behind after something is removed.
D. The speed at which something decreases or goes down.
C. To use up something.
A. The cutting down of trees for use.
17
some substances that are soluble are
salt and sand
sugar and iron filings
kooli-aid mix and sugar
18
What does water do for plants?
an area that is available for the plant to get bigger
it provides nutrients for plants to grow healthy
carries dissolved and other nutrients through the plant
an energy source that helps plants grow
19
What is a solid's particles like
really close
A solid
Far away
A little far away
20
What is a characteristic of a solid?
has a definite shape but no definite volume
Have a definite volume and shape
particles are far apart
Particles move freely
21
Percentage of water in the human body.
50%
70%
40%
60%
22
What is Sublimation?
The process of photosynthesis
The place where submarines park
The process in which a solid changes directly into a gas
Where unicorns exist
23
What is precipitation?
rain snow, sleet, or hail that falls to the ground
water leaves the ground and is turned into water vapor
water vapor starts to form to a liquid
an invisible gas
24
What Is The Particle Model Of A Liquid?
Particles Close Together But Free To Move Around
Particles Apart Moving Fast
None Of Them
Particles Close Together And Vibrating, But Held Together.
25
What does soluble mean?
A substance is able to dissolve
A substance is not able to dissolve
26
What is a Solid?
shape and volume of its container
shape of the part of the container which it occupies
can be hammered into thin sheets without breaking
retains a fixed volume and shape
27
What is decanting?
Pour solution off the top of another substance eg. sand
Use aluminium sulfide to separate mud from water
Use a magnet to separate iron filings from sand
Use filter paper to separate substances from solutions
28
What is transpiration?
Consuming oxygen and giving off CO
Evaporation of water through plant leaves
A sugar that's the main carbohydrate of photosynthesis.
The green color of a plant
29
What does water do in the body
Regulates body temperature
carries nutrients and oxygen to cells
Protects body organs and tissues
All of the above
30
Water is needed by living things for all these except...
Making new cells
Photosynthesis
Respiration
Solvent
31
What is a liquid
Something with a definite volume but no definite shape.
Something with no definite shape or volume.
Something with a definite shape and volume.
Something that only exists above freezing point.
32
What does dissolve mean?
Something that mixs in something else and disappears
Something that does not mix into a solvent
The amount of solute in a solvent
33
What is condensation?
an invisible gas
Water vapor that starts to form to a liquid
water leaves the ground and is turned into water vapor
rain, snow, sleet, or hail that falls to the ground
34
The percentage of fresh water is _________.
3%
5%
6%
4%
35
Oil and plastic are soluble substances.
True
False
36
What is a separating funnel used for?
To separate miscible liquids
To separate liquids from solids
To separate soluble and insoluble solids
To separate immiscible liquids
37
What is a solvent
a substance that dissolves a solute and makes a solution
a substance dissolved into a solution
a liquid not capable of being mixed to form a stable solution
a stable physical mixture of two or more substances
38
What does
soluble
mean?
It can be dissolved.
It is a mixture.
It is a solution.
It cannot be dissolved.
39
What is a liquid?
matter that can change size or shape
evaporation
matter that takes the shape of its container
Candy
40
Does soil contain water?
Always
No
Never
Yes
41
Changing states of matter
Chemical Change
Physical Change
42
What is filteration
The particle size
Germs
A method of separating a soluble from a insoluble
The boiling point
43
what is the arrangement of a gas particle model?
there is no arrangement
Fixed position
Free to move but 80% are touching
44
What is a sediment?
Material that floats on the surface.
Material that is filtered from a suspension.
Material that sinks to the bottom from suspension.
Material that sits in suspension.
45
What does ‘insoluble’ mean?
a solid substance that won’t dissolve ina liquid
any substance that does not dissolve
a solid substance that dissolves in aliquid
a liquid that doesn’t dissolve any solids
46
What is a suspension?
Physical mixture with two or more substances in a solvent
Physical mixtures of undissolved particles in a liquid.
Substance that will allow oil and water to mix.
47
What is a solute?
A liquid not capable of being mixed
A substance that is dissolved in a solution
A substance that dissolves a solvent and makes a solution
A stable physical mixture of 2 or more substances
48
What does immiscible mean?
When two or more liquids mix
I love Layers
When Two or More Solids don't mix
When Two or more liquids don't mix forming layers
49
The water cycle has no start or end.
false
true
50
What is a characteristic of the gas particle model
Gas particles fill a container and are easily compressed
Gas particles move in a zig zag fashion
All gases are colourless
Air exists between gas particles
51
How much water is salt water?
97%
100%
50%
85%
52
What is a gas?
Characteristics observed using the five senses.
It has no definite shape, but has a definite volume.
It has no definite shape, and no definite volume.
It has a definite shape and a definite volume.
53
What does dissolve mean?
A substance that is incorporated into a liquid and cannot be reversed
It means to unsolve a word problem
Dissolve means to walk away from a problem
Dissolve means it can be reversed
54
What is the Sun's role in the water cycle?
To provide the thermal energy to drive the cycle
To provide the light energy for the cycle
To cause water to condense in the cycle
To provide mechanical energy for the cycle
55
Chemistry: What is a solution?
A colloid
A solute dissolved in solvent
A chemical
A solvent dissolved in solute
56
According to the particle model, what is the structure of a gas?
Far apart, moving quickly.
Close together, very little movement.
Close together, moving quicker.
Far apart, very little movement.
57
What is the universal solvent?
Salt
Alcohol
Sugar
Water
58
What is the primary role of a separating funnel in separating mixtures?
Separating liquids with different densities
Allowing liquids to evaporate
Converting liquids into vapors
Filtering solid particles
