which of the following statements correctly describe compounds? select all that apply.
1-Compounds can be broken down into simpler substances by chemical means.
2-Each compound is composed of one type of molecule.
3-Compounds can be broken down into simpler substances by physical means.
4-Each compound is composed of one type of atom.
5-Each compound is composed of two or more types of atoms.
6-Compounds cannot be broken down into simpler substances by chemical means.