Which of these is a liquid at room temperature?
States of matter
Year 4 · Lower Key Stage 2 · Y4 States — Solids, liquids, gases; melting, freezing, evaporating
Draft — awaiting teacher review
Builds on: Everyday materials (Year 1)
I
Concept Anchor
Solids keep their shape. Liquids flow and take the shape of their container. Gases spread out to fill any space. Heating can melt solids and evaporate liquids; cooling can condense gases and freeze liquids.
Worked example
Water freezes at 0 °C and boils at 100 °C.
- 1.Below 0 °C water is solid ice.
- 2.Between 0 °C and 100 °C it is liquid water.
- 3.At 100 °C it boils and becomes water vapour (gas).
II
Guided Check
Why do puddles disappear on a sunny day?
III
Independent Diagnostic Practice
Drops form on the outside of a cold can. Where do they come from?
A freezer is at −18 °C. A bowl of water is put inside. What happens?