Physical Change

Question	Answer
What is the key feature of a physical change?	No new substance is produced
Give 4 example of physical change	Melting, freezing, evaporating and condensating
What is the simplest example of physical change?	Applying force
What is expansion	The volume increases but density decreases
What is contraction?	The volume decreases but the density increases
What is an example of contraction and expansion?	Hot air balloon and thermometer
What will happen if enough heat is added to a substance?	It shall melt
What is melting?	Solid to liquid
What is freezing?	Liquid to solid
Evaporation?	Liquid to gas
What is boiling point?	The point in which a liquid boils
Condensation?	Gas to liquid
Sublimation?	Solid to gas
What is dry ice?	Ice made from gas
What is mixing?	When 2 substances are mixed
What is dissolving?	When a solid is dissolved in a liquid
Solute?	Solid
Solvent?	Liquid
WHat happens when 2 substances mix?	They form a solution
What gets produced if water is boiled?	Bubbles (and water vapour)

Resource summary

	Created by afiq abdillah almost 8 years ago