Grade 3 · Science · Unit 1 of 15
Solids, Liquids & Gases
Melting, freezing, evaporation and condensation.
What your child practises
States of matter and the changes of state caused by heating and cooling, including melting and freezing points of water.
Alberta Curriculum learning outcome: 3M1.2, 3M1.3, 3M1.4 · solids, liquids, gases, and changes of state such as melting, freezing, evaporation and condensation
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
A puddle dries up on a warm sunny day. This is called…
☀️- evaporation
- melting
- condensation
- freezing
Show answer
evaporation
Hint: Evaporation is liquid to gas.
Question 2
Which of these changes is condensation?
🪟- water freezes in a lake
- ice melts
- a puddle dries
- steam from a kettle turns into drops on a cold window
Show answer
steam from a kettle turns into drops on a cold window
Hint: Condensation is when a gas cools into a liquid.
Question 3
Is it a solid, a liquid or a gas? Tap an item, then tap its basket.
Sort into: 🧊 solid · 💧 liquid · 💨 gas
- 🥛milk
- ✏️a pencil
- ♨️steam
- 🧃juice
- 🎈air in a balloon
- 🧊an ice cube
Show answer
🧊 solid: a pencil, an ice cube · 💧 liquid: milk, juice · 💨 gas: steam, air in a balloon
Hint: A solid keeps its own shape. A liquid takes the shape of its container. A gas spreads out to fill the space.
Question 4
What can make an ice cube melt faster?
🔥- heating it
- wrapping it in ice
- cooling it
- putting it in the freezer
Show answer
heating it
Hint: Heat makes solids melt.
Question 5
Water boils at about…
🫖- 0 °C
- 50 °C
- 20 °C
- 100 °C
Show answer
100 °C
Hint: Boiling water turns into a gas quickly.
Question 6
The temperature at which a solid becomes a liquid is called its…
🌡️- boiling point
- melting point
- cooling zone
- freezing room
Show answer
melting point
Hint: Each substance has its own melting point.