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9 chemistry end of year > general > Flashcards

general Flashcards

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1
Q

what is the test for hydrogen?

A

lit splint squeaky pop

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2
Q

what is the test for oxygen?

A

splint relights in testube of oxygen

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3
Q

what is the test for carbon dioxide?

A

limewater. carbon dioxide turns limewater cloudy white

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4
Q

what is the test for ammonia?

A

makes litmus paper turn blue. forma ammonium chloride when next to hydrogen chloride(g)

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5
Q

what is the test for chlorine?

A

makes iodide paper turn blue/black

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6
Q

what colours are the pH scale.

A

RED is always ACIDIC (pH 1-5)
GREEN is always NEUTRAL (pH 6-7)
BLUE/PURPLE is always ALKALINE (pH 8-14)

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9 chemistry end of year (5 decks)

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