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Chemistry > Reactions > Flashcards

Reactions Flashcards

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1
Q

3 uses of oxygen:

A

Welding torches, rocket fuel, breathing apparatus in hospitals

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2
Q

The word equation for respiration:

A

Sugar + oxygen -> carbon dioxide + water (energy)

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3
Q

Describe the chemical test for water

A

Water turns white anhydrous copper sulfate blue

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4
Q

Word equation for oxygen:

A

Hydrogen peroxide -> water + oxygen

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5
Q

What is the catalyst in the preparation of oxygen?

A

Manganese dioxide

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6
Q

What is the test for oxygen?

A

Glowing splint relights

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7
Q

Give 2 examples of a catalyst (other than manganese dioxide)

A

Platinum, iron

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8
Q

Word equation for hydrogen:

A

Magnesium + Hydrochloric acid -> magnesium chloride + hydrogen

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9
Q

What is the test for hydrogen?

A

A squeaky pop

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10
Q

What was Germany’s biggest airship called ?

A

The Hindenburg

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11
Q

What could have caused the Hindenburg to explode into flames?

A

The outer skin was coated with waterproof paint which is flammable and it could have become charged with static electricity

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12
Q

Word equation for carbon dioxide

A

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

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13
Q

What chemicals are required for the preparation of carbon dioxide?

A

Metal carbonate + acid

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14
Q

3 uses for carbon dioxide

A

Fizzy drinks, fire extinguisher, dry ice

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15
Q

2 observations when calcium is added to Hydrochloric acid

A

Bubbles of gas, lime water turns milky

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16
Q

Definition of oxidation:

A

Addition of oxygen

17
Q

Definition of reduction:

A

Removal of oxygen

18
Q

What is a redox reaction?

A

Reduction and oxidation both taking place in a reaction

19
Q

Give 3 properties of oxygen:

A

Colourless, odourless and a gas

20
Q

What is an example of an endothermic reaction?

A

Sherbet dissolving on your tongue

21
Q

An example of an exothermic reaction:

A

Wood burning in fire

22
Q

What is thermal decomposition?

A

The breaking down of a chemical using heat energy

23
Q

What is an example of thermal decomposition?

A

Copper carbonate -> copper oxide -> carbon dioxide

24
Q

Thermite reaction equation:

A

Iron oxide + aluminium -> aluminium oxide + iron

25
Q

What is the equation for rusting?

A

Iron + oxygen + water -> hydrated iron oxide

26
Q

Word equation for burning fuel:

A

Fuel + oxygen -> carbon dioxide + water (+energy)

Chemistry (7 decks)

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