Science
SCIENCE
Autumn 1
NAME:
Teacher
Target:
1
Particles
Find the topic words in this word search
N E V T S E L C I
T R A P S M N T E T A T S H E T
K O I O M C M V A T M J S I O O C K T D V G A S C
C X I X L O D P U P J E X C D I A W Y B I
L Z K J
O O P S D U T X H Q R T H R E T R M E Q B U J H V
F I M N U R M G P P U M O Q L O T O O O R T Q G P
D F A P Q F H E M R O R F X A M N T K S A S K I X
F R J J O F F O E R B R R Q Q W O A O E T M S B L
U G Z Y X U C I M O L E C U L E C L R L E C M A A
D N A P X E N A D M A T T E R Z
I U H G L M U F M
P H S I O N B D P C B B C M R D P M F D A K R G E
ATOM
COMPOUND
COMPRESS
CONTRACT
DIFFUSION
EXPAND
GAS
LIQUID
MASS
MATTER
MIXTURE
MODEL
MOLECULE
MOTION
PARTICLES
PURE
RANDOM
SOLID
STATE
VIBRATE
VOLUME
Inside each box, draw circles to show how the particles are arranged in
each of the three physical states.
Match the word to the definition
You need to learn how to spell these words for a spelling test
WORD
DEFINITION
Contract
Get bigger, often because of heating
Expand
Not in order
Gas
State of matter where the particles are touching
and vibrating
Liquid
Get smaller, often because of cooling
Mass
Another word for movement
Model
State of matter where particles are touching and
moving about
Motion
How much stuff there is in a substance
Particles
Solid, liquid or gas
Random
Move quickly backwards and forwards
Solid
The amount of space something takes up
State of matter
A way of showing how something looks or works
Vibrate
Squash into a smaller space
Volume
State of matter where the particles are very far
apart and free to move
Compress
The very small object that all matter is made from
Diffusion
Mixing because of random movement of particles
2
Particle Theory
Use the keywords from Homework #1 to fill in the blanks
1. A liquid and a _________ have a fixed volume.
2. Particles in a _________ are touching and randomly arranged.
3. The _________ a state of matter is, the faster the particles move.
4. A _________ can be compressed because the particles are far apart.
5. _________ and liquids can be poured because the particles can move around.
6. When a substance expands, the _________ move further apart.
7. A liquid is _________ to compress.
8. Particles in a _________ are touching and in a regular pattern.
9. A _________ has a fixed shape.
10. Particles in a _________ are far apart and randomly arranged.
11. The smell of a perfume spreads through the air by _________.
12. A _________ has no definite volume.
13. Particles move in a solid by _________.
14. When a solid is heated up, it can change _________ to become a liquid.
15. _________ means the number of particles in a particular volume of substance.
16. A liquid and a _________ have a shape that changes.
17. A _________ does not flow.
18. Air pressure is caused by particles in the air _________ objects.
19. A _________ has the shape and volume of its container.
Complete these sentences by writing shape or size in each space.
a Solids keep the same ............................... and ............................... .
b Liquids keep the same ........................... but not the same ............................... .
c Gases do not keep the same ............................... or ............................... .
Simon investigated particles by heating a bar and seeing how it fitted in
a gauge. Before he heated the bar, it fitted perfectly in the gauge, but
when he heated the bar it changed.
Underline the statements that are true.
A The bar expanded.
B The bar contracted.
C The bar got longer.
D The bar got shorter.
E The bar got thinner.
F The bar got thicker.
G The particles in the bar expanded.
H The particles in the bar contracted.
I The particles in the bar moved further apart.
J The particles in the bar moved closer together.
3
Diffusion
Use the keywords below to answer the questions.
chromatography, condense, dissolve, evaporate, filtering, insoluble, mixture,
pure, separate, soluble, solution, chromatogram, distillation, filtrate, purify, residue, saturated, solubility, solute, solvent
1. A ______________ is two or more substances mixed together.
2. If something can be ______________ it is soluble.
3. A ______________ is a liquid that dissolves another substance.
4. An ______________ solid forms a sediment when it sinks to the bottom of a
liquid.
5. Salt ______________ in water to make a solution.
6. A solution is a mixture of a ______________ and a solute.
7. An insoluble solid cannot be ______________.
8. Separating a solid from a liquid by pouring the mixture through filter paper is
called ______________.
9. Chromatography would be used to separate the ______________ in a colour
mixture.
10. A ______________ solution is one where no more solid will dissolve.
11. In chromatography, the ______________ soluble solids will travel further
across the paper.
12. Sieving can separate solid particles of different ______________.
13. If a solution is evaporated to dryness the ______________ is left behind.
14. ______________ can be described as evaporation followed by condensation.
15. Mud can be removed from river water by ______________.
16. Drinkable water can be obtained from sea water by ______________.
17. As a solvent gets hotter a solute will dissolve more ______________.
18. The boiling point of pure water is ______________°C.
19. A suspension is a liquid containing a solid that will not ______________.
20. Distillation can separate alcohol and water because they have different
______________ points.
Draw lines to match each mixture to the method or methods that
could be used to separate the substances.
Mixture
Separation method
sand and water
●
●
evaporation
food dyes
●
●
distillation
sea water
●
●
filtering
copper sulphate solution ●
●
chromatography
A Which substance is the most soluble in water? ______________________
B Which substance in almost insoluble in water? ______________________
C Peter added 45g of potassium chloride to 100cm3 of water. What sort of solution did he make—a saturated solution or an unsaturated solution? __________
D Peter heated the solution of potassium nitrate. Would this mean he could dissolve more or less solid in the solution? __________________
E What could Peter do to speed up dissolving? __________________________
________________________________________________________________
Phillip says that if you dissolve 5 g of salt in 25 g of water, the mass of the
solution will be 25 g, but Anita says it will be 30 g.
a Who is right? _____________________________
b Explain your answer.
________________________________________________________________
________________________________________________________________
Revision
James says that tomato ketchup is a liquid, but Madge says that tomato ketchup
is a solid. They made some observations:
A Tomato ketchup always has the same volume.
B Tomato ketchup can slowly change shape.
C Tomato ketchup is red.
D Tomato ketchup has a soft surface.
a Write down one observation that supports James’s argument. ___________
b Write down one observation that supports Madge’s argument. ___________
c How should James and Madge classify tomato ketchup? _______________
d Explain your answer to c. __________________________________________
________________________________________________________________
These diagrams show the particles in two gases as they
mix together. They are mixed up!
a How much potassium nitrate
will dissolve in:
10 cm3 of water? ........................
40 cm3 of water? .......................
25 cm3 of water? ........................
60 cm3 of water? ........................
b 3.5g of potassium nitrate
needs _________ of water to
Date: .............................................
What is your biggest achievement when completing this homework?
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Why were you successful in achieving this?
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Discuss two things that you have learnt whilst completing your homework?
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Have you completed this homework to a professional standard?
Presentation of Work?: .......................................................................................................................
Was it handed in on time?...................................................................................................................................
Is this a reflection of your best efforts?.................................................................................................................
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What parts of this homework did you find difficult?
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How did you endeavour to keep on trying?
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Set yourself two targets for next half terms homework?
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