Which of the following processes is an example of a physical change?

Powdered drink mix dissolving in water

Bread rising when being baked in an oven

An old metal sign rusting over many years

Plants converting H20 and CO2 into glucose

Question

Which of the following processes is an example of a physical change?
		
Powdered drink mix dissolving in water
		
Bread rising when being baked in an oven
		
An old metal sign rusting over many years
		
Plants converting H20 and CO2 into glucose

joannablackwelder · Answer

Physical changes are ones that don't involve chemical reaction. Can you tell which ones are chemical changes?

joannablackwelder · Answer

Physical changes are also more easily reversed.