In this lesson, we find out what happens to the arrangement and behaviour of particles during a change of state. Learn about the properties of solids, liquids and gases and how to identify changes of state.
Unit Overview: Physical and chemical changes
- 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
- Demonstrate that dissolving, mixing and changes of state are reversible changes
- Explain that some changes result in the formation of new materials, and that this kind of change is not usually reversible, including changes associated with burning and the action of acid on bicarbonate of soda.
For next step we recommend the unit: States of matter.
In this lesson, we find out what happens during a physical change, look at examples of physical changes and complete our own investigation into the physical change that occurs when chocolate melts.
In this lesson, we will find out what happens during a chemical change, look at some examples of chemical changes and practise representing chemical changes using word equations.
In this lesson, we will compare the characteristics of chemical and physical changes and use our knowledge to categorise changes as either physical changes or chemical reactions.
In this lesson, we will learn about reactivity and how scientists investigate how reactive a substance is. We will conduct our own investigation into the reactivity of vinegar while looking at the variables we need to change, control and measure in our investigation.
In this lesson, we will learn about what makes our results repeatable and reproducible. We will complete an investigation into the reactivity of metals and analyse our results to see if they are repeatable and reproducible.
Units in Science
- Practical skills
- Raw and synthetic materials
- Light & dark
- States of matter
- Rock cycle
- Human anatomy
- Electrical circuits
- Separating mixtures
- Physical and chemical changes
- Reproductive cycles
- Notable scientists
- Particles in physical and chemical changes
- Humans and animals over time
- Diet and lifestyle
- History of science