Sagot :
Answer:
1. There are four types of compounds:
・molecules held together by covalent bonds.
・ionic compounds held together by ionic bonds.
・intermetallic compounds held together by metallic bonds.
・certain complexes held together by coordinate covalent bonds.
2. Ionic compounds are formed by the transfer of electrons that are positively and negatively charged, whereas, covalent compounds are formed by sharing the electrons.