Answer:
If the earring is still gold it is a physical change.
Explanation:
Melting something can be a chemical change but since the gold is still gold its physical. Physical actions, such as changing temperature or pressure, can cause physical changes. No chemical changes took place when you melted the ice. The water molecules are still water molecules.
Temperature, during condensation the water in the container gets gradually warmer, this creates trace steam causing condensation.
the titration is the most important part in determining whether
D = m/v. v = (3)^3 = 27.
D = 27/27. D = 1g/cm^3
I’m not sure about the first question but fossil fuels are like coal oil natural gases etc etc