Dissolving resources

Task: Answer questions about the fire triangle. Assessment focus: elements necessary for combustion.

Students select which type of sugar would dissolve fastest and explain why.

Students indicate for each of six different variables those that need to be kept the same for an investigation about dissolving different types of sugar.

Students explain two ways to make salt dissolve faster when in cold water.

This task requires students to determine the best way to dissolve Milo the quickest. Students are given the opportunity to determine this by trial and error, then they are asked to write up their result and a conclusion.

Students are given some solids and liquids for this practical task. They plan how they would find out which liquids are solvents for any given solid, carry out the task, and write a conclusion.

For this practical students observe some activities which illustrate melting and dissolving. They write sentences about what they observe and then write what they think melting and dissolving mean.

For this practical students make observations about dissolving, and plan and carry out an investigation to find out what makes sugar dissolve more quickly.

Task: Draw what happens when sugar is added to a cup of coffee. Assessment focus: dissolving.