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Chemistry Y10 > Chemical changes > Flashcards

Chemical changes Flashcards

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1
Q

Which ions make aqueous solutions acidic

A

Hydrogen ions (H+)

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2
Q

Which ions make aqueous solutions Alkaline

A

Hydroxide ions (OH-)

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3
Q

What can be used to measure pH

A

Universal indicator
pH probe

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4
Q

What colour is phenolphthalein in acid

A

Colourless

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5
Q

What colour is phenolphthalein in Alkali

A

Pink

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6
Q

What colour is methyl orange in an acid

A

Red

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7
Q

What colour is methyl orange in an Alkaline

A

Yellow

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8
Q

What colour is lit is paper in an acid

A

Red

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9
Q

What colour is lit is paper in an alkaline

A

Stays blue

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10
Q

A problem with using universal indicator to text pH

A

It doesn’t provide an exact Ph value

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11
Q

What is a neutralisation reaction

A

A reaction between an acid and a base

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12
Q

What is a base

A

Any substance that reacts with an acid to form a salt and water only

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13
Q

What are the products when an acid reacts with a metal

A

Acid + metal -> salt + hydrogen

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14
Q

What are the products when an acid reacts with a metal oxide

A

Acid + metal oxide -> salt + water

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15
Q

What are the products when an acid reacts with a metal hydroxide

A

Acid + metal hydroxide -> salt + water

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16
Q

What are the products when an acid reacts with a metal carbonate

A

Acid + metal carbonate -> salt + water + carbon dioxide

17
Q

The best text for hydrogen

A

Squeaky pop test

18
Q

The chemical test for carbon dioxide

A

Limewater turns cloudy if carbon dioxide is present

19
Q

Most common chlorides are insoluble

A

Silver chloride and lead chloride

20
Q
A

Chemistry Y10 (2 decks)

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