UPSC CDS Science Chemistry Questions Part 1

Characteristics of a compound:-
→ Compounds are made up of 2 or more elements and they are all chemically bonded.
→The properties of a compound are different from the elements that make it up.
→ Compounds can be broken back into elements by chemical reaction, exposure to light, etc.
→ Compounds can be separated only chemically, not by physical means.
→ The mass of the compound is determined by the mass of the elements that make it up.
Thus, from given options, statement 2 does not match the characteristics of a compound