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Chemsitry > Reactions > Flashcards

Reactions Flashcards

1
Q

What are 3 uses of oxygen

A

Breathing apparatus
wielding
rocket fuel

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2
Q

What is the test for oxygen

A

Relights a glowing splint

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3
Q

What is the test for carbon dioxide

A

It turns the limewater cloudy

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4
Q

3 uses of carbon dioxide

A

Fire extinguishers
Fizzy drinks
Dry Ice

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5
Q

What is the test for hydrogen

A

Burning splint squeaky pop

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6
Q

What are 3 uses of hydrogen

A

Making margarine
Rocket fuel
Clean fuel

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7
Q

What is an exothermic reaction

A

A reaction that gives of heat

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8
Q

What is an endothermic reaction

A

A reaction that takes in heat

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9
Q

What is oxidation

A

Adding oxygen to a substance

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10
Q

What is reduction

A

Removing oxygen

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11
Q

What is a redox reaction

A

A reaction that reduction and oxidation occurring in the same reaction

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12
Q

What are safety precautions we use when using some reactive metals

A

Safety goggles
Tongs

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13
Q

What is the word equation for hydroxides

A

Metal+water-metal hydroxide +hydrogen

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14
Q

Most reactive to least reactive metals

A

Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Zinc
Iron
Tin
Lead
Copper
Silver
Gold

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15
Q

What is the word equation for rust

A

Iron+oxygen+water-hydrated iron(iii) oxide

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16
Q

What does salt water speed up

A

Rusting

17
Q

What are 2 requirements for rusting

A

Oxygen+water

18
Q

What are 4 methods used to prevent rusting

A

Oiling
Plastic coating
Galvanising
Sacrificial protection

19
Q

What is galvanising

A

When iron objects are coated with a more reactive metal like zinc or chromium

20
Q

A cheap method to prevent rust

A

Oiling

21
Q

What is one example of sacrificial protection

A

When bars are attached to ships

22
Q

Which metals aren’t good for galvanising

A

Copper and silver cause they rust

Chemsitry (4 decks)

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