Describe an activity for the reaction of metals with oxygen. Write an
appropriate chemical reaction for it. (diagram necessary)
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What is the reaction of metals with oxygen?
Ans : Many metals react with oxygen to form metal oxides. Potassium and sodium are soft metal which are easily cut exposing a shiny surface which changes to dull rapidly. The change from shiny to dull is called tarnishing.
How do chemical reactions occur?
Ans : Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.
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