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Science > Acids and Akalis S2 > Flashcards

Acids and Akalis S2 Flashcards

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1
Q

What is the process to make red cabbage indicator?

A

Chopping, boiling and filtering

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2
Q

How does an indicator change when you put it in acid and alkali?

A

It turns changes colour in acid and a different colour in alkali

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3
Q

What are some everyday acids?

A

Lemon juice, Vinegar and Orange juice

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4
Q

What are some lab acids?

A

Sulphuric, Hydrochloric and nitric acid

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5
Q

What are some everyday alkalis?

A

Toothpaste, bleach, washing soda and oven cleaner

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6
Q

What are some lab alkalis?

A

Sodium oxide, potassium oxide, calcium hydroxide, lithium hydroxide, iron hydroxide and magnesium hydroxide

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7
Q

What would the pH of Vinegar be?

A

pH 3

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8
Q

What would the pH of Bleach be?

A

pH 11

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9
Q

What happens when acid and alkalis mix?

A

It creates a neutral solution

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10
Q

What pH is a neutral solution?

A

pH 7

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11
Q

What happens during neutralisation?

A

Acid + Alkali = Salt + Water

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12
Q

What are some real life examples of neutralisation?

A

Cleaning your teeth, treating wasp sting, agriculture, shampoo and conditioner and indigestion

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13
Q

What salt is produced during neutralisation?

A

Sodium sulfate

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14
Q

How do you create large salt crystals?

A

You allow the salt water to evaporate slowly

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15
Q

How is acid rain formed?

A

Acid rain is formed when gases like sulphur dioxide, nitrogen dioxide and carbon dioxide dissolve in rain water

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16
Q

How does acid rain affect the planet?

A

Lakes and rivers too acidic for aquatic life to survive, Lowers the pH of soil which affects the fertility of the land, it damages the structures made of limestone, marble and metal

17
Q

What can we do to prevent acid rain?

A

Remove sulphur before burning fossil fuels, burn less fossil fuels, use catalytic converters, neutralise the acidic gases before they leave the power station

18
Q

What gases cause climate change?

A

Greenhouse gases - Carbon dioxide, methane, and water vapour

19
Q

How is climate change affecting our planet?

A

Extreme weather and rising seas

20
Q
A

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