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IGCSE Combined Science > Chemistry > Flashcards

Chemistry Flashcards

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1
Q

Reactivity Series

A

Potassium - Sodium - Calcium - Magnesium - Aluminium - Carbon - Zinc - Iron - Lead - Hydrogen - Copper

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2
Q

If reductant is more reactive,

A

It will reduce

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3
Q

A metal will _ less reactive metal when _ together.

A

Reduce heated

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4
Q

A metal _ a less reactive metal from _ of its compounds.

A

Displaces solution

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5
Q

Gereral Formula of Complete Combustion

A

Fuel + O2 > CO2 + H2O

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6
Q

Fractional Distillation

A

Refinery Gas - Gasoline(petrol) - Naphtha - Diesel(gas oil) - Bitumen

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7
Q

Bitumen has the lowest _ and the highest m_/b_/v_/

A

Flammability molecular size boiling point viscosity

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8
Q

Clean Air

A

78% Nitrogen 21% Oxygen 2% Ar Noble gases CO2 H2O

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9
Q

Galvanising

A

Coating with zinc to prevent rusting

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10
Q

Electroplating

A

Coating with tin to prevent rusting

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11
Q

Sacrificial Protection

A

Attaching more reactive metal to the side of iron for corroding instead

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12
Q

Rf Value

A

Distance moved by substance x / Distanced moved by solvent

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13
Q

MASH

A

Metal + Acid > Salt + Hydrogen

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14
Q

BASH

A

Base + Acid > Salt + Water

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15
Q

CASCH

A

Carbonate + Acid > Salt + CO2 + Water

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16
Q

pH Range

A

1 - 13

17
Q

Precipitation

A

Process of making insoluble salt by mixing solutions containg moleules of opposite charge

18
Q

Group ı

A

Soft, reactive metals with increaing reactivity as you go down the group

19
Q

Halogens

A

Group 7 that forms coloured poisonous gas. Reactivity decreases, boiling point&density increases and colour gets steeper as you go down the group

20
Q

If halide is added to less reactive halogen solution

A

It will displace halogen

21
Q

Transition Elements

A

The middle block of elements, collection of metals having high densities and melting points forming coloured compounds. They often act as catalysts

IGCSE Combined Science (4 decks)

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