Evaporation

Evaporation means

• Liquid converting into gas

• Gas converting into liquid

• liquid converting into gas by heating

• none of the above

Condensation means

• Liquid converting into gas

• Gas converting into liquid

• liquid converting into gas by heating

• none of the above

Phase change involved in forming water droplets on outer surface of cold glass is:

• Evaporation

• Condensation

• Boiling

• None

What process is involved when you put the liquid of hand sanitizer on your palm and it disappears

• Evaporation

• Condensation

• Boiling

• None

Which of the following is true about boiling

• Boiling only takes place at the surface of liquid

• boiling can occur everywhere, depending on the heat source. boiling require certain temperature at a certain pressure, and continuous heating source

• Boiling works at any temperature and pressure it happens before a liquid reaches its boiling point

• All of the above

Which of the following is true about Evaporation

• Evaporation can occur everywhere in liquid, depending on the heat source.

• Evaporation require certain temperature at a certain pressure, and continuous heating source,

• Evaporation only takes place at the surface of the liquid. evaporation works at any temperature and pressure it happens before a liquid reaches its boiling point

• All of the above

What is the difference between evaporation and condensation?

• They are exactly opposite to each other

• They are reversible process of each other

• Evaporation is converting from liquid to gas,condensation is converting from gas to liquid

• All of the above

Both water vapour and steam are gaseous states of matter then what is the difference between them

• The main difference lies between them is temperature

• Water vapour is little water droplets that exist in the air, while steam is water heated to the point that it turns into gas

• all of them

Examples of condensation is

• Windows misting up on a cold day

• Dew forming on grass in the early morning

• Glasses fog up when going from cold to hot

• Water drops forming on a glass holding a cold drink on a hot summer day

• All of the above

Examples of Evaporation is

• Hanging wet clothes on a washing line

• Disappearing sweating on hands.

• A lake drying up in a hot weather

• Sanitizer disappearing after applied on palm.

• All of the above