Question

5 sentence paragraph about the changes that happen in materials under the lack of oxygen???

Answer 1

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• When a metal reacts with oxygen, a metal oxide forms.
• The general equation for this reaction is: metal + oxygen → metal oxide.
• Rust is a form of iron oxide and it forms slowly when iron is exposed to air.
• Iron can be transformed to steel (an alloy), which is more resistant to rust.
• This means that one of their properties can be changed by an external condition, such as temperature, light, pressure, electricity, voltage, pH, or chemical compounds.
• This change is reversible and can be repeated many times.