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biology gcse > chemistry > Flashcards

chemistry Flashcards

1
Q

proton charge

A

+1

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2
Q

neutron charge

A

0

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3
Q

electron charge

A

-1

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4
Q

atoms have no …

A

overall electrical charge

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5
Q

lime cycle

A

calcium carbonate [limewater] caco3 – add heat – calcium oxide [ quicklime] cao — add water— calcium hydroxide [slackedlime] ca[oh]2 — dissolve in water— calcium hydroxide solution [lime water] ca[oh]2— bubble dioxide into lime water—- calcuim carbonate [ lime water ] caco3

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6
Q

nitric acid

A

nitrate

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7
Q

sulphuric acid

A

sulfate

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8
Q

hydrochloric acid

A

chloride

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9
Q

carbonate

A

co3

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10
Q

nitric acid

A

hno3

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11
Q

sulphuric acid

A

h2so4

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12
Q

hydrochloric acid

A

hcl

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13
Q

ore

A

a rock containing enough metal to make it worth while digging up

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14
Q

metals less reactive than carbon can be …

A

extracted by using carbon

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15
Q

a shape memory alloy is ….

A

a metal that can be bent but when heated it goes back to its original shape.

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16
Q

process of fractional distillation

A
  1. crude oil it heated to make vapour. 2. vapour rises p the column. 3. the column is hot tag the bottom and cooler at the top. 4. hydrocarbons condense at different points depending on their boiling points. 5. This separates them into different oils.
17
Q

emulsion

A

two things that when are added together do not mix

18
Q

emulsifier

A

substances that stabilise emulsions, stop them separating out.

19
Q

SAS

A

saturated –alkane — single

20
Q

DUE

A

double – unsaturated — alkene

21
Q

my evil pet bruno

A

methane – ethane– propane– butane

22
Q

alkene

A

Cn H2n

23
Q

alkane

A

CnH2n+2

24
Q

cracking

A

split large hydrocarbon molecules up into smaller molecules by heating them and passing the gas over a catalyst.

biology gcse (2 decks)

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