Science- (Yr 7) > mixtures > Flashcards

mixtures Flashcards

(3 cards)

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1
Q

WHAT IS A PURE SUBSTANCE?

A

Pure substances are made of one type of particle. They cannot be physically separated

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2
Q

WHAT IS A MIXTURE?

A

Different types of particles that can be physically separated.

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3
Q

COMPOSITION OF AIR

A

Air is made of oxygen, nitrogen and carbon dioxide plus some extra gases. We use oxygen in respiration. Condensation can be used to separate the gases in air

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