Past mistakes Flashcards

1
Q

What is a solution of accurately known concentration?

A

Standard solution

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2
Q

How to prepare a dry sample of a substance

A

1) filtration
2) Heat up the substance to evaporate liquid.

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3
Q

What is an electrolyte?

A

An electrically conducting ionic solution

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4
Q

Exothermic reaction

A

A reaction that releases heat energy

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5
Q

Homologous series

A

A group of compounds with similar chemical properties that can be represented by a general formula.

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6
Q

What are alcohols?

A

Have the functional group -OH
Represented by formula CnH2n+1OH

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7
Q

How are drinks with a low alcohol content made?

A

Fermentation

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8
Q

How are drinks with a higher alcohol content made?

A

Distillation (separating alcohol from water)

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9
Q

What is the -OH functional group called?

A

Hydroxyl

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10
Q

What is the functional group -COOH called?

A

Carboxyl

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11
Q

What are Carboxylic acids?

A

Contain functional group -COOH (always at end)
Names end in “oic acid”
General formula CnH2n+1COOH

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12
Q

What is produced when a metal reacts with water?

A

A metal hydroxide and hydrogen

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12
Q

What is the salt produced from a neutralisation reaction involving a carboxylic acid?

A

Ends in “anoate”

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13
Q

What is produced when a metal reacts with an acid?

A

A Salt and hydrogen

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14
Q

What is produced when a metal reacts with oxygen?

A

Metal oxide

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15
Q

What is a polymer?

A

Very large molecules formed by the joining of many small molecules called monomers.

16
Q

What are the essential elements for healthy plant growth?

A

Nitrogen, phosphorus and potassium

17
Q

What is the haber process?

A

Making ammonia from nitrogen and hydrogen with iron as a catalyst.

18
Q

What is the Ostwald process?

A

Oxidising ammonia to make nitric acid.

19
Q

What does monatomic mean?

A

Consisting of one atom.