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Chemistry GCSE > Types Of Chemical Reactions > Flashcards

Types Of Chemical Reactions Flashcards

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1
Q

What is a neutralisation reaction

A

Tje reaction between an acid and alkali that produces a neutral solution

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2
Q

What is an acid

A

A substance, that when dissolved in water, releases H+ ions

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3
Q

What is a base

A

A substance that neutralises an acid

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4
Q

What is an alkali

A

A substance, that when dissolved in water realises OH- ions

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5
Q

What is produced when an acid reacts with a base

A

Produced a SALT + WATER

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6
Q

What happens when an acid reacts with a metal

A

Produces SALT + hydrogen

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7
Q

What happens when an acid reacts with a metal carbonate

A

produces SALT + WATER + CO2

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8
Q

How to find what salt is created?

A

First element of alkali plus last element of hydroCHLORIC acid + SODIUM hydroxide —> SODIUM CHLORIDE

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9
Q

Why is universal indicator not used as indicator

A

Universal indicator doesn’t not office a proper end point, hence why it is also not used in titration

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10
Q

What is the shape of a pH graph curve

A

An S shape

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11
Q

What is the definition of a concentrated acid

A

It is a substance which has a high ratio of acid to volume of solution

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12
Q

What is the definition of a dilute acid

A

An substance which has a low ratio of acid to volume of solute

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13
Q

How do you change how can concentrated an acid is

A

By changing the volume of water it is dissolved in. More water means that it is less concentrated and vies versa

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14
Q

What is the definition of a strong acid

A

A strong acid is an acid which fully dissociates in water
— (all of the molecules get split up into their ions)

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15
Q

What is the definition of a weak acid

A

An acid which only partially dissociates in water
—(only some particles split into ions)

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16
Q

What can weak acids do

A

Weak acids are reversible, meaning that they can split and join back together

17
Q

What is pH

A

pH is the measure of the concentration of H+ ions in a solution

18
Q

What does it mean by a weak, concentrated acid

A

-> almost all particles are bonded tightened
-> BUT there are a lot of them, meaning that they can be corrosive

19
Q

What does it by mean by weak, dilute acid

A

-> non of the particles are dissociated
-> however, there are very few of the particles

20
Q

What is the meaning of strong, concentrated acid

A

-> all of the moleucles are dissociated
-> there are a lot of these ions present
most corrosive

21
Q

What does it mean by strong, dilute acid

A

-> all molecules are dissociated
-> BUT, there are not that many of them, meaning it is not as strong

22
Q

What is the process of reduction in terms of oxygen

A

Loss of oxygen

23
Q

What is the process of oxidation in terms of oxygen

A

Gain of oxygen

Chemistry GCSE (13 decks)

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