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The purpose of the paper of a tea bag is to filter the mixture of tea leaves and water.
Mixtures
In our awesome KS2 Science lessons, we get to mix things up and explore how to separate them! Our experiments dive into solvents, solutes, and suspensions. This quiz is all about mixtures and the cool ways to unmix them.
Mixtures are like when we put different things together. Even little kids enjoy mixing stuff like flour with raisins or sand with water. But separating? Not as fun, especially with mixed-up bricks! But guess what? It's a fun challenge for everyone, even grown-ups!
Test your science skills with this enjoyable KS2 Science quiz. How much have you learned about mixing and separating?
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1 .
Which one of the following is not a solution?
Coffee
Sweet tea
A mixture of sand and water
Carbonated water
A solution is a when two materials are thoroughly combined by dissolving - scientists call solutions 'homogeneous' mixtures
2 .
Which of the following would dissolve in water?
Oil
Soap
Clay
Chalk
We dissolve soap in water every time we have a bath
3 .
If you evaporated sea water, leaving the salt behind, how could you collect the water?
By filtering
By condensation
By dissolving
It would be impossible
Allowing the steam from the evaporating water to collect on a cold surface would make the water vapour condense. The liquid could then be collected in a separate container
4 .
Which of the following is an example of a mixture?
Cake batter
Air
Sedimentary rocks
All of the above
A mixture is anything that is made up of two or more materials - most things are mixtures
5 .
What might you use to separate a mixture of sand and iron filings?
A filter
A sieve
A magnet
A spoon
Iron filings are too small to be caught in a sieve and sand particles are too large to pass through a filter
6 .
You are trying to clean some muddy water by using a filter. Which of these materials would you not use in building a home made filter?
Bicarbonate of soda
Cotton wool
Sand
Filter paper
Bicarbonate of soda would dissolve in the water, but it would not help to filter out the other materials
7 .
What method would be used to separate a solution of sugar and water?
Boiling the water until it evaporated
Sieving the solution
Filtering the solution
Using a magnet
Evaporating the water would leave the sugar behind
8 .
A tea bag is made from tea leaves and an especially porous paper. Besides being a container for the tea leaves, what is the purpose of the paper?
To keep the tea leaves dry
To keep the tea flavour inside the tea bag
To keep the tea leaves from burning
To filter the mixture of tea leaves and water
The paper keeps the tea leaves inside the tea bag, but allows the tea solution to pass through. This makes a cup of tea with no tea leaves in it
9 .
What do we call a material that will not dissolve in water or another liquid?
Impermeable
Permeable
Insoluble
Soluble
Insoluble is the opposite of soluble, and impermeable is the opposite of permeable
10 .
How could a mixture of salt and sand be separated?
By sieving only
By adding water
By filtering only
By dissolving the salt in water and then filtering
Salt can be dissolved but sand can't
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🔓 Unlock UNLIMITED Quizzes and challenge yourself every day. But that's not all...
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