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You learn how matter can exist as solids, liquids and gases, and how it can change from one form to another. You also distinguish physical change from chemical change by looking for new substances, such as when wood burns.
You should already be able to describe common materials and their basic properties. It also helps to know simple particle ideas and everyday changes like heating and cooling.
Not confident yet? Work through Forces & energy first.
One question from this skill's own question bank, shown with its full working.
The change of a solid directly into a gas is called:
Working: Sublimation is a solid changing directly to a gas without becoming liquid.
This topic normally appears in SHS Integrated Science when learners study states of matter, separation of mixtures and simple reactions. It also supports WASSCE-style questions that ask you to classify changes and identify substances from their properties.
Curriculum notes are a general guide to where this work normally sits. Always check the syllabus your school or examination body is currently using.
Other SHS Integrated Science: Forces, Energy & Matter skills in Science, at the same point in the course.
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6 questions with a worked answer after every attempt, and a SmartScore that tracks how close you are to mastery.