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Chemistry > Topic 4 - Reactions > Flashcards

Topic 4 - Reactions Flashcards

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1
Q

What are the reactions of oxygen.

A

Respiration Rusting combustion

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2
Q

Test for hydrogen?

A

Squeaky pop

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3
Q

Test for oxygen?

A

Relighting a glowing splint

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4
Q

Test for carbon dioxide?

A

Limewater turning cloudy

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5
Q

Definition for catalyst?

A

A chemical that speeds up chemical reactions with out being used up

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6
Q

Examples of a catalyst?

A

Manganese dioxide(making oxygen) Enzymes Iron(making ammonia)

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7
Q

Uses of oxygen?

A

Breathing apparatus Welding Rocket fuel

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8
Q

Uses of carbon dioxide?

A

Fire extinguishers Fizzy drinks Dry ice

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9
Q

Uses of hydrogen?

A

Making margarine Rocket fuel Clean fuel

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10
Q

Definition of exothermic?

A

A reaction that gives out heat

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11
Q

Definition of endothermic?

A

Reaction that takes in heat

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12
Q

The temperature goes up when it is …

A

Exothermic

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13
Q

The temperature goes down when it is…

A

Endothermic

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14
Q

Example of an exothermic reaction?

A

Burning fuel

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15
Q

What happens during oxidation?

A

Oxygen added

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16
Q

What happens during reduction?

A

Oxygen removed

17
Q

What is a redox reaction?

A

It is when oxidation and reduction are occurring in the same reaction

18
Q

In this equation what had been reduced ? Copper oxide+carbon->copper+carbon dioxide

A

Copper oxide

19
Q

In this equation what had been oxidised? Copper oxide+carbon->copper+carbon dioxide

A

Carbon

20
Q

Example of a endothermic reaction?

A

Sherbet on tongue

21
Q

Equation for hydrogen?

A

Magnesium+hydrochloric acid-> magnesium chloride+hydrogen

22
Q

Equation for carbon dioxide?

A

Calcium carbonate+hydrochloric acid->calcium chloride+water+carbon dioxide

23
Q

Evidence that chemical reaction has taken place?

A

Gives off gas Gives off heat Changes colour

24
Q

Solvent

A

Liquid that dissolves in a solid solute

25
Q

Solute

A

A solid that will dissolve is a solvent

26
Q

Solution

A

A mixture of a solute and a solvent

27
Q

what test is this diagram showing?

A

it is showing the oxygen test- relighting a glowing splint

28
Q

what test is this diagram showing?

A

test for hydrogen - pop with lit splint

29
Q

what test is this diagram showing?

A

carbon dioxide test -bubled through limewater it turns milky

Chemistry (5 decks)

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