What equipment would you use to separate out the following mixed up materials?
Choose from : Magnet, filter paper and funnel, sieve, spoon and burner
a) stones and water
b) pins and rice
c) sand and gravel
d) sand and water (stirred)
e) flour and rice crispies
f) sugar and water
Materials can be changed in
different ways - Some can be reversed and some can't. Which of
the following can be reversed?
The answers
to the following questions are either 'can
be reversed' or
'cannot be
reversed'.
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1. |
Pottery that has been baked
in a kiln. |
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2. |
Freezing water to make
ice. |
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3. |
Water evaporating. |
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4. |
Water vapour condensing
on a cold window |
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5. |
Making an omelette. |
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6. |
Making toast |
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7. |
Condensing is the opposite
of evaporating. |
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8. |
Filtering separates solid
things from a gas. |
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9. |
Soluble things dissolve
in water |
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10. |
Decanting separates one
liquid from another. |
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11. |
Cricket Bats are made from
plastic |
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12. |
Glass is made from sand |
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13. |
Chocolate is made from
cocoa beans |
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14. |
Cork comes from tree bark. |
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Einstein Questions
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15. |
What happens to sugar when
you add it to a cup of tea? |
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16. |
What would happen if you
add oil to water? |
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17. |
Why is the top of a milk bottle
forced off if the milk freezes on a cold day? |
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18. |
What is water vapour? |
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19. |
Can you explain how puddles
disappear? |
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20. |
Why does a pond skater
insect not sink? |
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