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Chemistry paper 2 > Chemical Analysis > Flashcards

Chemical Analysis Flashcards

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1
Q

What is a pure substance?

A

Only contains 1 compound or element throughout

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2
Q

What tells you it’s a pure substance?

A

It will melt or boil at a specific temperature (compare to data book)

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3
Q

What do impurities do?

A

Lower the melting point

Increase the boiling point

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4
Q

What is a formulation?

A

A mixture with an exact amount of components

Have a precise purpose

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5
Q

What are formulations important for ?

A

Pharmaceutical industry

Product shelf life

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6
Q

What is the test for oxygen?

A

Put a glowing splint in a tube and it will relight the glowing splint.

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7
Q

What is the test for chlorine?

A

It bleaches damp litmus paper, turns it white

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8
Q

What is the test for CO2?

A

Shaking CO2 and limewater makes the solution cloudy.

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9
Q

What is the test for hydrogen?

A

Hold a burning splint over the end of a test tube and it will squeaky pop.

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Chemistry paper 2 (8 decks)

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