Chemical Compounds Quiz

Chemical Compounds: Types, Bonding, and Reactions

• A chemical compound is composed of many identical molecules containing atoms from more than one chemical element held together by chemical bonds.
• Chemical compounds can be transformed into a different substance by a chemical reaction, which may involve interactions with other substances.
• There are four major types of compounds, including molecular compounds held together by covalent bonds; ionic compounds held together by ionic bonds; intermetallic compounds held together by metallic bonds; coordination complexes held together by coordinate covalent bonds.
• A chemical formula specifies the number of atoms of each element in a compound molecule, using the standard chemical symbols with numerical subscripts.
• Many chemical compounds have a unique CAS number identifier assigned by the Chemical Abstracts Service.
• Any substance consisting of two or more different types of atoms in a fixed stoichiometric proportion can be termed a chemical compound.
• Chemical compounds have a unique and defined chemical structure held together in a defined spatial arrangement by chemical bonds.
• There is varying and sometimes inconsistent nomenclature differentiating substances, which include truly non-stoichiometric examples, from chemical compounds, which require fixed ratios.
• Molecules are electrically neutral groups of two or more atoms held together by chemical bonds.
• Ionic compounds are chemical compounds composed of ions held together by electrostatic forces.
• Intermetallic compounds are metallic alloys that form an ordered solid-state compound between two or more metallic elements.
• Bonding and forces in compounds differ based on the types of elements present in the compound.
• Compounds can be converted to a different chemical composition by interaction with a second chemical compound via a chemical reaction.