_________ changes are changes that can return to its original form.
temporary
As a result of temporary change, ________ new substance is formed.
no
When _______ gold is cooled, it changes back to solid gold.
liquid
A piece of paper, when burnt, turns to ________.
ash
Think of a material that can no longer return to its original form.
Any answer
Ash cannot be changed back to the original piece of _________.
paper
Think of a material that can still return to its original form.
Any answer
________ changes are changes that cannot return to its original form.
Permanent
As a result of the permanent change, a new __________ is formed.
substance
_______ gold, when heated in a furnace at a very high temperature, becomes liquid gold.
Solid