Iron is crucial in many areas of life: it is found in our blood, as well as being used to build bridges.
- Iron is one of the most common element on Earth.
- Iron is found in living organisms.
- Mars gets its red color from the iron oxide on its surface.
- Iron is commonly used in industry.
Iron is one of the most common elements on Earth.
It's the fourth most abundant element in the Earth's crust, making up roughly 5% of the crust after oxygen, silicon and aluminium.
Pure iron is a silvery metal, though when exposed to oxygen it produces red iron oxide, or rust.
Rust is ...
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