Success Homeschool

Year 4 Science · Melting and freezing

Name: ______________________

Date: ____________

1. Which of these is a liquid at room temperature?
- ☐ (a) A brick
- ☐ (b) Milk
- ☐ (c) A spoon
- ☐ (d) An ice cube
2. What makes ice melt?
- ☐ (a) Heating it
- ☐ (b) Cooling it
- ☐ (c) Shaking it in the dark
- ☐ (d) Putting it in the freezer
3. Why does chocolate melt in a car on a hot summer day?
- ☐ (a) The car is moving
- ☐ (b) It is too dark
- ☐ (c) It gets warm enough to melt
- ☐ (d) It gets too cold
4. Melted chocolate is put in the fridge. What happens?
- ☐ (a) It turns into water
- ☐ (b) It boils
- ☐ (c) It disappears
- ☐ (d) It becomes solid again
5. In a fair test of melting, what should be different?
- ☐ (a) The size of each piece
- ☐ (b) Only the type of material
- ☐ (c) The place each plate is left
- ☐ (d) The starting time
6. At what temperature in degrees Celsius does ice melt? (number only)
7. Water changing into ice is called f_______.
8. Is an ice cube a solid or a liquid?

Answer sheet

1. Milk — Milk flows and takes the shape of its container, so it is a liquid.
2. Heating it — Heating makes solids melt.
3. It gets warm enough to melt — A hot car warms the chocolate above its melting temperature.
4. It becomes solid again — Cooling makes the liquid chocolate set solid again.
5. Only the type of material — Only one thing should change: here, the material being tested.
6. 0 — Ice melts (and water freezes) at 0 °C.
7. freezing — A liquid turning into a solid when cooled is freezing.
8. solid — Ice keeps its shape, so it is a solid.