Question

1. wet clothes are put on a washing line to dry. the water in the clothes turns into water vapour in the air as the clothes dry.

a) name the change as water turns into water vapour ………………………………
b) rain forms from water vapour in the air. name this change ……………………
c) the clothes dry much faster on a sunny day, explain why in terms of particles.
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………

1. some substances can change directly from a solid to a gas, research the name of this process. can you find an example of a substance that behaves like this?

………………………………………………………………………………………………………………
………………………………………………………………………………………………………………

Explanation:

a) Evaporation is the process where a liquid (water) turns into a gas (water vapour).
b) Condensation is when a gas (water vapour) turns into a liquid (rain).
c) On a sunny day, particles (of water in the clothes) gain more energy (from the sun's heat). With more energy, they move faster and are more likely to escape from the liquid (clothes) into the gas phase (air), so drying is faster.
For question 10: Sublimation is the process where a solid changes directly to a gas. An example is dry - ice (solid carbon dioxide), which sublimates into carbon dioxide gas.

Answer:

a) Evaporation
b) Condensation
c) Particles gain more energy, move faster, and escape more easily.

1. Process: Sublimation; Example: Dry - ice (solid \(CO_2\))