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Year 9- Chemistry > Reactions > Flashcards

Reactions Flashcards

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0
Q

What are the properties of oxygen?

A

Colourless
Odourless
Gas

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1
Q

What chemicals is the air made out of?

A

Oxygen 21%
Nitrogen 78%
Argon 0.9%
Carbon Dioxide 0.037%

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2
Q

What are the uses of oxygen?

A

Welding torches
Rockets fuel
Breathing apparatus in hospitals

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3
Q

What is the equation for respiration?

A

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

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4
Q

What is the chemical test for water?

A

Use the chemical anhydrous copper sulphate which changes Colin from white to blue in the presence of water

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5
Q

What is the rust equation?

A

Iron + oxygen + water > hydrates iron oxide

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6
Q

What is the burning fuel equation?

A

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

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7
Q

What is the equation of the preparation for oxygen?

A

manganese dioxide

Hydrogen peroxide > water + oxygen

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8
Q

What is the test for oxygen?

A

Relighted a glowing splint

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9
Q

What is a catalyst?

A

A chemical which speeds up a chemical reaction without being used up itself

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10
Q

What are some industrial catalysts?

A

Platinum

Iron

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11
Q

What is an enzyme?

A

A biological catalyst

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12
Q

What are enzymes involved with?

A

DNA replication
Protein synthesis
Digestion

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13
Q

What is the equation for hydrogen?

A

Magnesium + hydrochloric acid > magnesium chloride + hydrogen

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14
Q

What is the equation for carbon dioxide?

A

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

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15
Q

What are uses for carbon dioxide?

A

Fire extinguishers
Fizzy drinks
Dry ice

16
Q

What are some properties of carbon dioxide?

A

Gas

Flammable

17
Q

What does exothermic mean?

A

Reaction gives out heat

18
Q

What does endothermic mean?

A

Reaction takes in heat

19
Q

What is oxidation?

A

Reaction occurs when a chemical reacts with oxygen

20
Q

What is reduction?

A

Opposite of oxidation and occurs when a substance loses oxygen

21
Q

What is redox reaction?

A

A substance reduces another substance

22
Q

What are the uses for hydrogen?

A

Making margarine
Clean fuel
Rocket fuel

Year 9- Chemistry (2 decks)

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