Unit 4A Overview Assignment

To determine the molecular weight of a compound.

To predict the shape or geometry of a molecule.

To calculate the number of atoms in a molecule.

To analyze the reactivity of a molecule.

Atoms are stable when their outermost shell has two electrons.

Atoms are stable when their outermost shell has eight electrons.

Atoms are stable when they have an equal number of protons and electrons.

Atoms are stable when they lose all their valence electrons.

Electrons are shared equally between the metal and nonmetal.

Electrons are transferred from the nonmetal to the metal.

Electrons are transferred from the metal to the nonmetal.

The metal and nonmetal both gain electrons.

1

2

7

8

Poor conductors of heat

Brittle and easily breakable

Good conductors of electricity

Low melting points

They have weak intermolecular forces.

A large amount of heat energy is required to overcome the strong electrostatic attraction in their structure.

Their atoms are very small and tightly packed.

They readily form covalent bonds.