Matter (States image (Liquid, Condensates, Gas, Plasmas, Solid), Sources…
An object with mass that occupies space. (everything)
Why does it change
The particles are more active.
Solid to liquid to gas
The particles are less active.
Gas to liquid to solid
How do we know it has changed
Does not depend on the amount of substance
Depends on the amount of the substance
what you can observe in an object without modifying it
what you observe in an object when changing its substance
For example: burning a paper