Mon Prof Augmenté
Ice, Water, Steam
Age 12 · Science
A pure substance can exist as a solid, a liquid, or a gas. Heating or cooling it can change it from one state to another.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on October 8, 2026: its text stays readable here, and its picture opens with a subscription.
The app is free. A subscription opens every lesson, in every school year.
In the picture
- Ice cubes: tightly packed spheres arranged in a regular pattern.
- Flame: heat reaching the water.
- Water: loosely touching spheres.
- Steam: widely spread spheres.
- Frosty plate: a cold surface where steam forms droplets.
Examples
- Ice melting in a drink
- Water boiling in a kettle
Key takeaways
- A pure substance melts and boils at fixed temperatures.
- During a change of state, the temperature stays the same while heat is added or removed.
Quiz: Ice, Water, Steam (Age 12)
-
Which statement describes the particles in a solid pure substance?
-
While a pure substance is melting or boiling, what happens to its temperature as heat is added?
-
At what temperatures does a pure substance melt and boil?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
Get the app
Free app, optional subscription
App Store Google Play
Carry on in the app
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
Your child’s teacher does not use My Enhanced Teacher yet?
Tell them about it
