What happens to particles in solids?
They vibrate in fixed positions.
What is melting?
The process where a solid turns into a liquid.
What happens when heat is added to ice?
It melts into water.
How does heat affect ice cubes in the sun?
They melt into water.
Define 'vibration' in relation to solids.
It is the rapid back-and-forth motion of particles in a solid.
How do particles behave in liquids?
They can slide past each other but are still close together.
What is freezing?
Answer: The process where a liquid turns into a solid.
The process where a liquid turns into a solid
How does cooling affect water?
It can freeze into ice.
Describe condensation in UAE.
Water droplets form on cold surfaces due to humid air cooling down.
What does 'expansion' mean?
The increase in volume of a substance due to heat.
Describe particle movement in gases.
They move freely and are far apart.
What is evaporation?
The process where a liquid turns into a gas.
What is heat loss?
The process where an object loses thermal energy
How does evaporation help in cooling?
It removes heat when water changes from liquid to gas, like sweating.
What does 'compression' refer to?
The reduction in volume of a substance when pressure is applied.
What is the effect of heat on solid particles?
They vibrate faster as they gain heat.
What is condensation?
The process where a gas turns into a liquid.
Explain heat gain.
The process where an object absorbs thermal energy.
Why do puddles dry up quickly in UAE?
High temperatures cause rapid evaporation.
Define 'particle spacing.'
The distance between particles in a substance.
Give a real-life example of particle behavior in a gas.
Air in a balloon expands when heated.
Compare melting and evaporation.
Both involve heat gain, but melting is solid to liquid, while evaporation is liquid to gas.
How do heat changes affect particle spacing?
Heat gain causes particles to move apart, while heat loss brings them closer together.
Explain condensation in terms of everyday life.
It occurs when water vapor in the air cools and forms droplets, like on a cold drink.
What is 'thermal energy'?
The energy that comes from heat, related to the motion of particles.