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==Key Stage 3==
===Meaning===
A [[Metal Oxide]] is a [[Base|basic]] [[Metal Compound|metal compound]] made of one or more [[Metal]] [[atom]]s and [[Oxygen]] [[atom]]s.
===About Metal Oxides===
: [[Metal Oxide]]s have a [[pH]] greater than [[Neutral (Chemistry)|7]]
: Some [[Metal Oxide]]s are [[insoluble]] [[solid]]s.
: Some [[Metal Oxide]]s [[dissolve]] in [[water]] to make [[Metal Hydroxide]]s which are [[alkali]]s.
===Examples===
{| class="wikitable"
|-
| style="height:20px; width:200px; text-align:center;" |'''Group 1 Metal Oxides'''
| style="height:20px; width:200px; text-align:center;" |'''Group 2 Metal Oxides'''
| style="height:20px; width:200px; text-align:center;" |'''Transition Metal Oxides'''
| style="height:20px; width:200px; text-align:center;" |'''Group 3 Metal Oxides'''
|-
| style="height:20px; width:200px; text-align:center;" |
: Lithium Oxide: Li<sub>2</sub>O
: Sodium Oxide: Na<sub>2</sub>O
: Potassium Oxide: K<sub>2</sub>O
: Rubidium Oxide: Rb<sub>2</sub>O
: Caesium Oxide: Cs<sub>2</sub>O
| style="height:20px; width:200px; text-align:center;" |
: Beryllium Oxide: BeO
: Magnesium Oxide: MgO
: Calcium Oxide: CaO
: Strontium Oxide: SrO
: Barium Oxide: BaO
| style="height:20px; width:200px; text-align:center;" |
[[Chemical Formula]]e may vary for transition metals.
: Titanium Oxide: TiO<sub>2</sub>
: Manganese Oxide: MnO
: Iron Oxide: Fe<sub>2</sub>O<sub>3</sub>
: Copper Oxide: CuO
: Zinc Oxide: ZnO
| style="height:20px; width:200px; text-align:center;" |
: Aluminium Oxide: Al<sub>2</sub>O<sub>3</sub>
: Gallium Oxide: Ga<sub>2</sub>O<sub>3</sub>
: Indium Oxide: In<sub>2</sub>O<sub>3</sub>
|}
==Key Stage 3==
===Meaning===