Answer:
2Cu + O2 ----------------> 2CuO
It is clean and is blue when you take away air hope i helped.
Photosynthesis. Easy ;) have a nice day
Answer:
A physical property is an aspect of matter that can be observed or measured without changing it. A chemical property may only be observed by changing the chemical identity of a substance.
Explanation:
i found a table that might be able to help u