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Flashcards in CHEMISTRY COPY Deck (5)
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1

What is an oxidation reaction?

When a substance gains oxygen
OR
When a substance loses electrons

2

What is a reduction reaction?

When a substance loses oxygen
OR
when a substance gains electrons

3

When metals react with oxygen they always form...

metal oxides!

4

What is the reactivity series and which four metals come on top?

It explains how reactive metals are - some metals lose electrons quicker than others.
K-Na-Ca-Mg

K
Na
Ca
Mg

5

Describe a replacement reaction

When a more reactive element displaces a less reactive element from a solution of its salt