Chemistry
Grade-10
Easy
Question
Fill in the blanks:
Metal + oxygen 
_________
- Metal oxide
- Metal ash
- Metal carbonate
- Metal hydride
Hint:
Metal oxide
The correct answer is: Metal oxide
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.
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