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UNIT 7: MIXING THINGS

Can all materials dissolve in water?

LEARNING OBJECTIVE:
You will learn that...
1.) Some materials can dissolve in water and somne cannot

Lesson 1: Can all materials Dissolve in water?

Do you know what materials can dissolve in the water?
i.) Prepare a glass of water.

ii.) Then, add 2 teaspoonful of salt into the water and stir it for a few momets.
iii.) Now, see what happens to the salt.
iv.) Do you know why the salt disappears?

v.) When a material dissolves in water, nothing is left on the filter papaer after filtration.

vi.) However, water may taste differently when a material dissolves in it.
vii.)  These are some of the materials that can dissolve in water or other fluids.

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