Soluble and insoluble are properties of matter.
There are substances that dissolve in water. When a substance dissolve in water, it cannot be seen anymore. The substance is mixed with the water. We call this mixture a solution. The substance that dissolved is called a soluble. A substance that does not dissolve in water is called insoluble.
Now, for this experiment you will need the following:
- Transparent containers (glass) or beakers (to hold 100-250 ml of water)
- Water (warm and cold)
- Substances – salt, sand, oil, pebbles, small leaves. brown sugar, caster sugar, ground coffee, black pepper, flour, food colouring, gelatin powder, and baking soda,
Add a teaspoon a substance to a transparent container of cold water and a glass of warm water, stir and observe the difference.
Watch to see if the substance dissolves in the warm water and cold water and if one is better than the other.
Record you findings in a chart. When you are done make notes as to what happens to each. Does the water remain transparent, get cloudy after stirring. Then determine if the substance is soluble or insoluble.
You can view the video below to compare your observation.
Then answer the following questions.