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Chemistry > Acids Bases and Salts > Flashcards

Acids Bases and Salts Flashcards

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1
Q

What are indicators?

A

Indicators are Chemicals which change color in acidic/neutral/alkaline solutions

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2
Q

Examples of Indicators

A

Blue/Red Litmus and Universal Indicator

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3
Q

Color of Red Litmus Paper in Acidic Solution

A

Red

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4
Q

Color of Red Litmus Paper in Alkaline Solution

A

Blue

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5
Q

Color of Red Litmus Paper in Neutral Solution

A

Red

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6
Q

Color of Blue Litmus Paper in Acidic Solution

A

Red

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7
Q

Color of Blue Litmus Paper in Alkaline Solution

A

Blue

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8
Q

Color of Blue Litmus paper in neutral solution

A

Blue

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9
Q

Explain Universal Indicator

A

can be used to measure ph as the color can be matched to the PH color chart

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10
Q

Explain PH Meter

A

PH meter measures ph accurately upto 1 decimal place

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11
Q

What is an Acid?

A

An acid dissolves in water producing Hydrogen Ion(H+)

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12
Q

What in Alkali

A

And Alkali dissolves in water producing Hydroxide Ions(OH-)

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13
Q

What’s ionized in water?

A

Strong Acid/Alkali

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14
Q

What is not ionized in water?

A

Weak Acid/Alkali

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15
Q

Examples of Strong Acid

A

Hydrochloric Acid, Sulfuric Acid

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16
Q

Examples of Strong Alkali

A

Sodium Hydroxide /Potassium Hydroxide

17
Q

Examples of Weak Acid

A

Ethanoic Acid

18
Q

Examples of Weak ALkali

A

Ammonia

19
Q

What is a Base?

A

A base is a metal oxide or metal hydroxide which reacts with an acid producing a salt and water

20
Q

What is a soluble base?

A

Alkali is a solube base

21
Q

Define neutralisation

A

when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water

22
Q

What type of reactions are neutralization reactions

A

Exothermic

23
Q

Name the 4 types of Acid Reactions

A

Acid + Alkali—–> Salt + Water
Metal + Acid—-> Salt + Hydrogen
Metal Carbonate + Acid—–> Salt + Water + Carbon Dioxide
Acid + Ammonia —> Ammonium Salt

24
Q

How to Test for Carbon Dioxide?

A

Bubble the gas into colorless limewater(calcium hydroxide solution)
it will turn milky if the gas in carbon dioxide

Chemistry (6 decks)

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