- Copper sulphate
- Sodium chloride (which is the chemistry name for salt)
- Calcium carbonate (which is the chemistry name for chalk)
- Sugar
- Pepper
Libby and I predicted which ones would dissolve and which did not. Here are our results. My predictions were correct except for calcium carbonate and copper sulphate. I predicted that the copper sulphate would not dissolve (insoluble), but it did. I predicted that the calcium carbonate would be soluble, but it wasn't. We also heated the chemicals to see whether the heat made them dissolve more quickly.
I learned some chemistry words:
Dissolve - when a solid mixes with a liquid and becomes part of the liquid
Soluble - the solid substance dissolves
Insoluble - the solid substance does not dissolve
Solvent - the liquid you are trying to dissolve something in
Solute - the solid substance you are trying to dissolve
Solution - the final mixture which includes the solvent and the solute
