8.9 g + 90 g = 98.9 Copper has a density
Answer:
Explanation:
A substance melting is a physical change and the properties of the substance will remain same, only that the substance will just become liquid.
On the other hand, burning is a chemical change which produces an entirely new compount(in most cases, ash) which does not have the same properties as the original object
There are six atoms of oxygen in that compound.