C3.2.2 - Solutions

Question 1

What is a solute?

Answer 1

A solid or gas that is dissolved into a liquid (solvent)

Question 2

What is a solvent?

Answer 2

A liquid that a solid or gas (solute) is dissolved into.

Question 3

What is a solution?

Answer 3

A solvent (liquid) that has a solute (solid or gas) dissolved into it.

Question 4

How can we tell if a solute is still in a solution?

Answer 4

• Taste the solution (not in a lab!)
• See if the solution changes colour
• Weigh the solute and solvent before and after they have been mixed - they should weigh the same.

Question 5

Is a solution a mixture or a compound?

Answer 5

Mixture

Question 6

The diagram shows a solute (solid or gas) and solvent (liquid). What would the solution look like?

Answer 6

Question 7

Is water the only solvent?

Answer 7

No other liquids can be solvents too e.g. nail varnish.

Question 8

Can gases act as a solute and dissolve into a solvent?

Answer 8

Yes e.g. carbon dioxide gas dissolving into drinks to make htem fizzy

Question 9

Laura has 3 beakers. Each contains 200cm³ of a colourless liquid. 2 of these liquids are solutions. How could she find out which ones are solutions?

Answer 9

Heat the 3 beakers and evapourate the water. The 2 solutions will leave a dry solute behind.

Question 10

Sarah dissolves 3g of copper sulfate into 100 g of water. What will the mass of the solution be?

Answer 10

103 g