1) The document discusses an experiment to determine how much salt can dissolve in 50 ml of water before reaching saturation. 2) Students add salt spoon by spoon to water in a bottle until no more will dissolve, creating a saturated salt solution. 3) They then precisely measure the mass of salt dissolved in the saturated solution and record it on a worksheet.

1. Focus Question: What happens if you keep adding salt to water? Investigation 2-1 Mixtures and Solutions