Question

summury of chapter molecules,ions,and atoms grade 7​

Answer 1

Answer:

1. It is the smallest particle of an element or a compound which can exist independently. Molecules of an element constitute the same type of atoms. Molecules may be monoatomic, diatomic or polyatomic. Molecules of compounds join together in definite proportions and constitute a different type of atoms
3. Particles can be atoms, molecules or ions. Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together. An ion is a positively or negatively charged particle.