Physical Science Unit 10: Bonding

What does a chemical formula tell us?

Shows the number and type of atoms in a unit of a compound.

What is an ion?

A charged particle sthat has either more of less electrons than protons.

Differentiate between a cation and an anion

Cations are atoms that lost electrons and Anions are atoms that gained electrons.

What is a molecule?

Neutral particles that form from covalent bonding

What is the difference between a polar bond and a non polar bond?

A polar bond does not share equally. A non polar bond shares electrons equally.

What determines how elements share the electrons between them in a covalent bond?

Larger atoms=stronger pull, charge on the nucleus, total number of electrons

What is an oxidation number?

The + or - number that tells you how many electrons the atom gained, lost , or shared to become stable

In an ionic compound, the oxidation number is the name as…

the charge of the ion

What is a polyatomic ion? Give 2 examples

A + or - charged group of atoms covalently bonded, that act as a single unit. Na2SO4, Mg(OH)2

Metal with a nonmetal

Ionic

Nonmetal with a nonmetal

covalent

Atoms give and take electrons

Ionic

Atoms form charged ions

Ionic

Electrons are shared between elements

covalent