Solutions and Evaporating

By the end of this unit, students will be able to:

• understand what a solution is and identify the components of a solution (solute and solvent);
• differentiate between substances that dissolve in a liquid (soluble) and those that do not (insoluble);
• understand what evaporation is and recognize it as a process where a liquid changes into a gas;
• understand why filtration cannot separate dissolved substances and why sieving cannot be used for dissolved solids.

Curriculum Alignment: Year 5 Science: Properties and changes of materials

• know that some materials will dissolve in liquid to form a solution, and describe how to recover a substance from a solution
• use knowledge of solids, liquids and gases to decide how mixtures might be separated, including through filtering, sieving and evaporating.