Iron, magnesium and gold are examples of metal elements. Metals have properties in common. They are:
Most metals also have other properties in common. They are:
Three metals (iron, cobalt and nickel) are magnetic. Steel is a mixture of elements but it is mostly iron, so it is also magnetic. The other metal elements are not magnetic.
Metals react with oxygen to produce compounds called metal oxides. For example, magnesium reacts with oxygen to produce magnesium oxide. The reaction can be represented by this word equation:
magnesium + oxygen → magnesium oxide
You can find out more about acids and alkalis in this Chemistry study guide.