Answer:
A pure solid is heated and turns into a pure liquid.
Explanation:
No colour change recorded, only change of state, hence this is a physical change - physical changes I.e. change of state and temperature are not chemical reactions.
Answer:
4.83% of acetic acid in the vinegar
Explanation:
Planets, black wholes gravity
the law of thermodyanamic is the restatement of the law of conservation of energy
