Covalent and Ionic

What is a compound?

A pure substance made of two or more different elements chemically bonded.

What types of bonds hold compounds together?

Ionic bonds and covalent bonds.

What types of atoms form ionic bonds?

Metals and nonmetals.

What happens to electrons during ionic bonding?

Metals lose electrons; nonmetals gain electrons.

What structure do ionic compounds form?

Crystal lattices (a repeating 3D pattern).

What does a Bohr diagram show for ionic compounds?

Electrons transferred from metal → nonmetal, forming charged ions.

What types of atoms form covalent bonds?

Two or more nonmetal atoms.

What happens to electrons during covalent bonding?

Atoms share electrons.

What structure do covalent compounds form?

Molecules.

Examples of covalent molecules?

A: H₂O, CO₂, O₂, CH₄.

What does a Bohr diagram show for covalent compounds?

Shared electrons between atoms.

Ionic vs. covalent: main difference?

Ionic = electrons transferred; Covalent = electrons shared.

Ionic vs. covalent: bonding partners?

Ionic = metal + nonmetal Covalent = nonmetal + nonmetal