If it looses or gains heat. A simple example for you.
If you leave an ice-cube over a period of time outside , what will you observe. Yes, the ice-cube will melt. This is because the ice-cube gained heat from its surrondings and after sometime it becomes pure water. Isn't this called a change of state? ;)
The state of matter remain unchanged.
no physical change does not change matter
Change of state.
state of matter
The state of matter remain unchanged.
a change in size, shape or the state of matter is a physical change. True for A+.
It can.
Because melting is a change of state: from solid to liquid.
A change in the state of matter occurs when heat energy is added or removed.
phase change.
a chemical change
evaporation.