C3 Chemistry Revision Edexcel

How do you make Carboxylic acid?

Alcohol + Oxygen + Carboxylic acid

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How do you make Esters?

Alcohol + Carboxylic Acid = Esters

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What is sulphuric acid used for?

- Car batteries

- Fertilisers

- Soap

-Detergents

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Describe what you do in a "titration" experiment?

-Measure alkali using a pipette.

-Measure acid using a burette.

-Put burette over the flask which contains the alkali

-Put white tile or paper underneath the conical flask to see colour change.

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Describe what you do in flame tests.

- Get a test wire

-Clean it with dilute hydrochloric acid

-Dip to the saly

-Put it over to a blue flame using a bunsen burner.

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What is the flame colour of sodium ?

Yellow

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What is the flame colour of Potassium?

Lilac

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What is the flame colour of Calcium?

Brick-red

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What is the flame colour of Copper?

Blue-green

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Silver Nitrate + Chloride ions = ?? what precipita

white

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Silver Nitrate + Bromide = What is the colour of p

Cream or Pale Yellow

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Silver Nitrate + Iodide = What colour is the preci

Yellow

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What catalyst do you use in the Haber Process?

Iron

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What catalyst do you use in Contact Proces in maki

Vanadium (V) oxide or Vanadium Pentoxide

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What is the test to see if the solution is an acid

Blue litmus paper turns red

Purple litmus paper turns red

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What is the test to see if the solution is an alka

Turns red litmus paper blue

Turns purple litmus paper blue

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What are the metals called in Group 1 of the Perio

Alkali Metals

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What are the metals called between column 2 and 3

Transition Metals

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What are the properties of Transition Metals?

High Density

High melting and boiling point

Good conductors

Malleable

Ductile

Sonorous

Form coloured compounds

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What are properties of Alkali Metals?

Low density

Soft (can be cut with a sharp knife)

Reacts with water

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What are ESTERS used for?

Perfumes

Soaps

Detergents

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Why is it important not to waste water?

Drinkable water is limited

Costs money

Without it, can cause droughts

Expensive to desalinate sea water

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How do we make soaps?

Esters + Sodium Hydroxide = Soaps

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Describe how detergents remove stains.

Hydrophobic part into the grease

Hydrophylic part into the water

Grease globule is dissolved

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What are the uses of sulphuric acid?

Fertilisers

Soaps

Detergents

Explosives

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What is the advantage of soft water?

Produces no scum if mixed with soap

Lathers with soap

Can be used daily for washing etc.

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What are advantages of hard water?

It has calcium in it which helps the growth of bones and teeth

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What are disadvantages of hard water?

Produces scum

Does not lather

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What apparatus is used to measure out "volume" of

Pipette

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What is used to measure the amount of "acid" in ti

Burette

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What is the meaning of concordant?

Repeatable and accurate.

Reliable

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Name a suitable indicator in titration.

Litmus solution/Litmus Paper

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What is a QUALITATIVE inverstigation?

Qualitative investigation is to find "WHICH" substance(s) is/are present.

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What is a "QUANTITATIVE" test?

A quantitative test is to find how much of the substance(s) is present.

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How do you identify ammonia?

Turns damp red litmus paper blue!

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How do you identify a solution which contains Sulp

Add dilute hydrochloric acid and barium chloride to a solution. If it produces a white precipitate, it has sulphate ions.

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How do you identify Sulphite Ions S03(2-)

Soak a filter paper in an "ACIDIFIED POTASSIUM DICHROMATE (VI)" . If sulphur dioxide gas is present, the filter paper will turn from orange to green.

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What is the RELATIVE FORMULA MASS of H20 (water)?

18

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How do you treat WATER?

Filtration to remove any solid particles

Chlorination to kills bacterias

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