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Card 16

Front

what is a catalyst?

Back

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Card 17

Front

what is electrolysis used for?

Back

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Card 18

Front

how?

Back

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Card 19

Front

why?

Back

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Card 20

Front

what is an ore?

Back

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Card 21

Front

very reactive elements?

Back

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Card 22

Front

not very reactive elements?

Back

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Card 23

Front

what are in the middle of reactivity?

Back

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Card 24

Front

what is reduction?

Back

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Card 25

Front

name some natural elements? (you don't have to use electrolysis or reduction)

Back

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