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revision notes > Chemistry: Reactions > Flashcards

Chemistry: Reactions Flashcards

1
Q

What percentage of oxygen is in the air?

A

It is 21%

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2
Q

What can oxygen be used for?

A

It can be used for welding torches, rocket fuel and breathing apparatus

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3
Q

What’s the word equation for oxygen?

A

Manganese dioxide

Hydrogen peroxide-water and oxygen

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4
Q

What is an enzyme?

A

Soluble protein molecules

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revision notes (4 decks)

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