They both describe substances
No. Chemical and physical properties are different.
A chemical change is when the chemical properties of a substance changes and a physical change is when the chemical properties stay the same but the physical properties (shape, temperature etc...)
The differences in chemical properties are not significant (excepting protium and deuterium); the physical properties are different.
Enantiomers..
Homologise have the different molecular masses so can not have the same physical properties, due to same functional group they show same chemical properties but with different rates of reaction.
Actually they have the same chemical properties so therefore they are allotropes of carbon
They have similar chemical properties because isotopes of an element have the same number of electrons as an atom of that element. The electron arrangement is the same owing to same chemical properties. However they have different numbers of neutrons, which affects the mass number. Mass number determines the physical properties such as boiling/melting/density etc.
The physical properties are of course different. The chemical properties are considered identical but this is not a general rule; for example hydrogen isotopes (1H and 2H) have some different chemical and biochemical properties.
elements in the same group
Elements in the same group have similar properties as they have the same number of valence electrons.
Compounds with the same functional group can have similar physical properties, such as boiling point or solubility, due to similarities in their chemical structure and intermolecular forces. However, other factors like molecular weight or branching can also affect these properties.
Physical and chemical properties change as the result of a chemical change, which produces new products with different physical and chemical properties than the reactants.