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Chemistry > C8 > Flashcards

C8 Flashcards

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1
Q

What is the common name for calcium hydroxide dissolved in water?

A

limewater

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2
Q

what is a pure substance?

A

substance that is only a single element or compound

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3
Q

how do you know if a substance is pure?

A

a pure substance melts/ boils at a specific fixed temperature

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4
Q

impure substances melt/ boil …

A

over a range of temperatures

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5
Q

what is formulation?

A

a complex mixture that has been designed as a useful product

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6
Q

what are examples of formulations?

A

fuels
cleaning products
paints
medicines
alloys fertiliser
food

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7
Q

what is a chromatogram?

A

the results of chromatography analysis

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8
Q

what is the stationary phase in chromatography?

A

the paper

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9
Q

what is the mobile phase in chromatography?

A

solvent

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10
Q

is steel an element compound or mixture?

A

mixture

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11
Q

is air an element compound or mixture

A

mixture

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12
Q

what colour are sodium compounds?

A

white

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13
Q

What one 3 examples of formulations

A

Paints
Fertilisers
Drugs

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14
Q

what are 3 examples of pure substances.

A
  1. glucose
  2. urea
  3. sucrose
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15
Q

what are the 3 examples of mixtures

A
  1. urine
  2. blood
  3. saliva
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16
Q
A

Chemistry (13 decks)

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