soluble or insoluble

Soluble or Insoluble - Does it Dissolve?

Task 1

Will the substances in the table below dissolve in water? Test each one and complete the table. There are extra rows for you to test other substances.

Stuck or can’t get the material you need? Ask your family what they think.

If you are still stuck, search online for the answers. 

Substance	Does it dissolve in water?
Sand	No ✅
Chalk	No ✅
Flour	No ✅
Rice	No ✅
Coffee granules	yes
Sugar	Yes ✅
Salt	Yes ✅
Gravy	No

Task 2

Write the definition in your own words. Only use information from trustworthy websites like Cambridge, Collins and WordHippo.

What does soluble mean?    able to be dissolved to form a solution ✅

What does insoluble mean?     incapable of being dissolved.

Task 3

Sort all the substances you tested in Task 1 into the table below. 

Example: 

Sugar can be dissolved in water so it is a soluble substance. The water also remains clear once the sugar has dissolved. Therefore, I should put sugar in the blue box.

	Soluble	Insoluble
Clearwater	Sugar ✅ Salt ✅	Flour ✅ Rice ✅
Colours the water		Sand Gravy Coffee granules chalk

Task 4

Watch this video to see what happens when a substance dissolves. Some words are tricky to understand so try watching it with your family and discuss what is happening.

Task 5

Investigate what conditions can help a substance dissolve in water more easily or quickly.

Possible ideas: What if the water was at a different temperature?

What if you stirred the substance more times?

Present your results as a table like the following examples.

	Coldwater	Room temperature	Warm water	Hot water
Amount of salt dissolved  Grams? How many teaspoons?	10	7	5	3

	No stirs	2 stirs	4 stirs	6 stirs
Amount of sugar dissolved  Grams? How many teaspoons?	2	4	5	7