Acids And Alkalis Flashcards

(23 cards)

1
Q

Acids have a pH of less than…

A

7

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2
Q

Bases have a pH of more than…

A

7

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3
Q

Difference between a base and an alkali?

A

Alkalis are just bases dissolved in water

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4
Q

Salts are made when an acid reacts with a…

A

Base, carbonate or metal

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5
Q

What colour does acid turn blue litmus paper?

A

Red

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6
Q

What colour does universal indicator turn with acid?

A

Red

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7
Q

What colour does an alkali turn universal indicator?

A

Blue

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8
Q

What colour does universal indicator turn with a neutral substance?

A

Green

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9
Q

What is produced when you dissolve acids in water?

A

Hydrogen ions, H+

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10
Q

What does (Aq) mean?

A

The substance is IN water

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11
Q

What is produced when Alkalis are dissolved in water?

A

Hydroxide, OH-

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12
Q

What’s the neutralisation reaction?

A

H+(aq) + OH-(aq) –> H20

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13
Q

In a precipitation reaction, ions collide with one another to form…

A

An insoluble product. This is the precipitate.

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14
Q

What is hydrochloric acid?

A

HCL

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15
Q

What is nitric acid?

A

HNO3

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16
Q

Hydrogen peroxide

17
Q

Sodium hydroxide

18
Q

Potassium hydroxide

19
Q

What is dissociation?

A

When a H-Cl molecule splits into H+ and Cl- ions

Or

NaOH becomes Na+ and OH- ions

20
Q

How do you test for hydrogen gas?

A

Squeaky pop test

21
Q

How do you test for carbon dioxide?

A

Co2 turns limewater cloudy white

22
Q

What is effervescence?

A

Bubbly, fizzy

23
Q

What are spectator ions?

A

Present in reaction but don’t form the precipitate