Reactions of Metals 29 November 2018.

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Presentation transcript:

Reactions of Metals 29 November 2018

What happens to the bike if you leave it outside? If you have the answer consider why this happens

Metal react with oxygen This process is called oxidation and leads to corrosion. Rusting is a good example of this. We can speed up the process by heating metals

Experiment 1 Heat the 3 samples in roaring Bunsen burner flame. Care with Magnesium it is dangerous!

Results table Metal Appearance before effect of heating in air Appearance after Iron wool Copper Magnesium

What happened Metals + Oxygen  metal oxide Metal oxides are not elements they are called compounds and will be covered in a later lesson

Experiment 2: Metals with acid Place a small piece of metal into dilute acid Watch what happens and record the results

Metals and Acid Results table Appearance before What happens ? What is left Copper Magnesium Iron Zinc

What happened Metal + acid  a salt + hydrogen Why did it fizz?

Write it up Write down what you have found out today Did all the metals behave the same? Was there anything in common between the two experiments?

Homework Learn the key words definitions Due in 1 week