Chemistry · Oct / Nov 2020 · Paper 11 · Question 7
Why does a balloon full of helium gas become smaller as the temperature changes from 30 °C to 10 °C?
- AThe gas condenses to a liquid and so takes up less space.
- BThe gas particles become smaller at lower temperatures.
- CThe gas particles diffuse through the balloon and escape.
- DThe gas particles move more slowly so reducing the pressure.
As printed in the paper
Show the answer
Correct answer: D. The gas particles move more slowly so reducing the pressure.
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.