The Golden Gate Bridge in California is one of the most famous steel structures in the world and weighs more than 80,000 tonnes.
Did you know?
Steel is a mixture.
It is made when iron is mixed with a small amount of carbon.
Mixtures containing one or more metals are called alloys.
Steel is the most common metal alloy in the world.
It is strong and durable.
Perfect for bridge building!
Steel is a type of mixture called an alloy.
Did you know that steel is an alloy, or mixture, of iron and carbon?
- Mixtures containing one or more metals are called alloys.
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