carbon cycle
Freezing/melting or evaporation/condensation, are physical changes that don't affect the chemical nature of the substances.
The consequence of a chemical change is the modification of the molecular nature.
No, the chemical nature of the reactants is changed.
During a chemical change the nature of substances is changed.
an example of a chemical change is burning. there are, of course, many others.
Burning is a chemical change.
Chemical change.
Cooking is for example a chemical change.
Rusting is the oxidation of a metal and is an example of a chemical change.
The chemical nature of the molecule is transformed.
For example burning of coal is a chemical change.
rust is a chemical change for iron