Question 1

The Reactivity Series

Accepted Answer

The reactivity series shows the reactivity of metals with other substances. This is determined by how easily they form positive ions by losing electrons. The higher the metal is in the reactivity series the more reactive it is. We can use a rhyme to remember the order of the metals.

Question 2

Reactions of Metals with Oxygen

Accepted Answer

Metals react with oxygen to make a metal oxide. As the metal gains oxygen this is known as an oxidation reaction. If we look at the following example of burning magnesium:
Magnesium + oxygen → magnesium oxide
In terms of oxygen gain or loss, if a metal gains oxygen we call it an oxidation reaction, if a compound loses oxygen we call it a reduction reaction.

Question 3

Redox Reactions

Accepted Answer

When metals react with acids, they undergo a redox reaction. A redox reaction occurs when both oxidation and reduction take place at the same time. A redox reaction occurs when electrons are transferred.

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