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What are three states of water?
Ice (solid) Water (liquid) Steam (gas)
Explain this to me
Why is it important to save energy?
Find me a thermal conductor
Find me a thermal insulator
What is the difference between a solution and a mixture?
In a solution materials are dissolved so cannot be filtered out (salt and water)
How would you separate stones and sand?
Sieving
Wood and plastic are good thermal conductors (true or false)
FALSE
What are renewable and unrenewable energy sources?
...
What are 6 ways people can save energy?
Turn off lights, close the fridge, recycle, wear a sweater, take short showers, walk or cycle.
How do we measure heat?
With a thermometer
What is a thermal insulator?
A material that thermal energy cannot flow through well - cotton, wood, etc
What is a thermal conductor?
A material that thermal energy can now through - such as metals
What is this?
Distillation
What is this?
Filtration
What is evaporation?
separates solid and liquid solution through heat
How do we separate mixtures? 4 types
Sieving, filtration, distillation and evaporation
What is a heterogenous mixture (example)
A mixture where you can see different parts - a salad, granola, yoghurt and fruit
What is a homogenous mixture (example)
A mixture where you can't see the separate parts - tea, coffee
What is a pure substance (example)
Objects with one particle - gold, salt, diamond, oxygen
What are chemical changes?
Combustion and oxidisation
What is a reversible and an irreversible change?
...
Example of a gas
...
Example of a liquid
...
Example of a solid
...
Name three different types of matter
solid, liquid and gas
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