Page 150 - text book form physics kssm 2020

Figure 4.20 shows examples of phase change of matter that involve specifi c latent heat.

Specifi c Latent Heat

Melting Evaporation Boiling Condensation

Cooling drinks Cooling body on Cooling as liquid Process of steaming
and food with hot day nitrogen boils food
ice cubes

Cooling system Heating espresso
of refrigerator coff ee

Cooling system of
air conditioner

Video on cooling with liquid Video on heating espresso
nitrogen coffee

http://bt.sasbadi.com/p4144a http://bt.sasbadi.com/p4144b

Figure 4.20 Examples involving specifi c latent heat

Activity 4.8 ISS ICS

Aim: To discuss applications of specifi c latent heat in daily life
Instructions:
1. Work in groups.
2. Gather information on applications of specifi c latent heat in daily life:
(a) Evaporation of sweat
(b) Steaming food
3. Discuss how specifi c latent heat is applied in each situation.
4. Present the fi ndings in the form of a mind map.

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144 4.3.4
4.3.4