Year 10 - Chemistry

Year 10 - Chemistry
Bonding
Periodic Table
Ionic
Covalent
Metallic
Trends
Molecule Shapes
Diagrams
Linear
Properties
High melting and boiling points
Properties
Low melting and boiling points
Properties
Very high melting and boiling points
Brittle
Cation and anion (metal and non-metal)
Forms discrete molecules
Two non-metals
Sea of delocalised electrons holds lattice together
All metals
Great conductor
Good conductor in water (or as a liquid)
Poor conductor
Bent
Trigonal Planar
Trigonal Pyramidal
Tetrahedral
Structure of an atom
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
Lewis
Structural
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.
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.
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