CHEMISTRY - LOTS OF MIXING

I used the chemistry set to find out what happens when you mix certain chemicals in my chemistry set with water. I wanted to find out which chemicals dissolved and which ones did not. These are the chemicals I tested:

• 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