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Chemistry Topic 3 > Types Of Chemical Reaction > Flashcards

Types Of Chemical Reaction Flashcards

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1
Q

What is a redox reaction?

A

A redox reaction is a reaction in which oxidation and reduction occur at the same time

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2
Q

What is a reducing agent?

A

A reducing agent is the element that removes oxygen from the other

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3
Q

What is an oxidising agent?

A

The element that gives its oxygen to the other

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4
Q

Reduction is the —— of electrons

A

Gain

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5
Q

Oxidation is the —— of electrons

A

Loss

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6
Q

What is a half equation?

A

A half equation shows the change that happens to one reactant in a reaction.

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7
Q

What is an acid?

A

An acid is a substance that releases hydrant ions H+, when it is dissolved in water

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8
Q

What is a base?

A

A base is a substance that can neutralise an acid

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9
Q

What is an alkali?

A

A base that can dissolve in water. It releases OH - ions when it dissolves in water

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10
Q

What is the PH scale?

A

The PH of a solution describes its relative acidity or alkalinity

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11
Q

What is neutralisation?

A

Neutralisation is the reaction between an acid and a base or alkali to form a salt and water only

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12
Q

How do you predict the name of the salt formed in neutralisation?

A

The first part comes from the metal in the base of alkali the second part comes from the acid used

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13
Q

What happens in a neutralisation reaction

A

The H+ ions react with the the OH- ions to form H2O

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14
Q

What are carbonates?

A

Carbonates are ionic compounds that contain a carbonate ion.

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15
Q

What happens when a acid reacts with a carbonate?

A

Acid + carbonate-> salt+ water + carbon dioxide

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16
Q

What happens when an acid reacts with a metal?

A

Acid+ metal -> salt + hydrogen

17
Q

What is the difference between a dilute and a concentrated acid?

A

A dilute acid contains a low ratio of acid to volume of solution. A concentrated acid has a high ratio of acid to volume of solution

18
Q

What is the difference between strong and weak acids?

A

Weak acids are partially ionised ( only a small amount of their molecules release H+ ions) whereas strong acids are fully ionised ( all of their molecules release H+ ions

19
Q

How is PH linked to hydrogen ion concentration?

A

In an aqueous solution, as the concentration of H+ ions increases by a factor of 10, the PH of a solution decreases by one

Chemistry Topic 3 (2 decks)

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