Question

To bring about a change in state, you must change

the amount of substance
the amount of heat energy of the substance
the position of the substance
composition of the substance
@DanJS @eric_d @ganeshie8

Answer 1

r u sure?

Answer 2

Imagine, there's an ice cube on ur palm and when the surrounding temperature rise, what'll happen

Answer 3

@geny55

Answer 4

oh ok :)

Answer 5

Ice( solid state )
when melts due to rise in temperature,
Ice melts ( liquid state )

Answer 6

yes b. a phase change happens when there is heat energy introduced or removed

Answer 7

oh ok thx :)

Answer 8

You're welcome @geny55