What is a solution? What happens when we dissolve something?

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Presentation transcript:

What is a solution? What happens when we dissolve something?

Investigation Weigh the beaker you have been given Put 100ml of water into the beaker and weigh it again Weigh the salt you have been given Dissolve the salt Weigh the solution you have made What have you found out?

Does it dissolve? calcium carbonate salt copper sulphate graphite sugar copper oxide Is soluble Is not soluble

What is happening? The solution Peas (these are the salt molcules) Rice (this is the water) Peas (these are the salt molcules) salt water molecules mixed up spread out same mass

How many spoons dissolved Temperature oC How many spoons dissolved

Solubility experiment Fill a beaker of water to 100ml Take the temperature of the water Count how many flat spoons of salt will dissolve in that beaker Write your results down What did we find out? What can you say about solubility and the temperature of the water? * ** *** Use the key words dissolved and solution correctly to describe this experiment L3 Describe how temperature affects solubility L4 Explain what a saturated solution is L5

Describe how temperature affects solubility * ** *** Use the key words dissolved and solution correctly to describe this experiment Describe how temperature affects solubility Explain what a saturated solution is