Year 10 - Chemistry | Mind Map

Bonding

Ionic

Properties

High melting and boiling points

Good conductor in water (or as a liquid)

Brittle

Cation and anion (metal and non-metal)

Covalent

Properties

Low melting and boiling points

Poor conductor

Forms discrete molecules

Two non-metals

Metallic

Properties

Very high melting and boiling points

Great conductor

Sea of delocalised electrons holds lattice together

All metals

Periodic Table

Trends

As you go across a period add one valence electron

As you go down a group add one valance shell - all elements in the same group will contain similar chemical properties

Molecule Shapes

Linear

Bent

Trigonal Planar

Trigonal Pyramidal

Tetrahedral

VSEPR

The 3D structure of molecules can be determined using electron pair repulsion (VSEPR). Lone pairs repel bonding pairs, this how trigonal pyramidal molecules are formed.

Diagrams

Lewis

Structural

Structure of an atom

Octet Rule

The octet rule is a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.