Oxides
Science: KS3, topic 2.4.10
Metal and Non-Metal Oxides
An oxide is when an element reacts with oxygen to form a compound. These elements can bond with oxygen after burning it in air.
Metal oxides
- If a metal reacts with oxygen it will form a metal oxide.
- Metal + oxygen → metal oxide
- Iron + oxygen → iron oxide
- Magnesium + oxygen → magnesium oxide
- Metal oxides are alkaline.
- Metal oxides are solids at room temperature.
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Non-metal oxides
- If a non-metal reacts with oxygen it will form a non-metal oxide.
- Non-metal + oxygen → non-metal oxide
- Carbon + oxygen → carbon dioxide
- Sulfur + oxygen → sulfur dioxide
- Sulfur dioxide dissolves in water in the clouds to form acid rain.
- Non-metal oxides are acidic.
- Non-metal oxides are gases at room temperature.
Test yourself on Oxides
What gas dissolves in water in clouds to cause acid rain?
Choose the correct statement in each pair about metal and non-metal oxides.
An unknown element burns in air. The oxide formed is a solid and is alkaline. What type of element is this most likely to be?