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iGCSE Chemistry > Acids > Flashcards

Acids Flashcards

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1
Q

Nitrogen

A

78%

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2
Q

Oxygen

A

21%

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3
Q

Argon

A

0.96%

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4
Q

Carbon Dioxide

A

0.04%

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5
Q

Which is a noble gas in the atmosphere?

A

Argon

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6
Q

Magnesium + Oxygen —> Magnesium Oxide

A

Bright White light
White powder forms

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7
Q

Sulphur + Oxygen —> Sulphur dioxide

A

Blue Flame

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8
Q

Hydrogen + Oxygen —> Water

A

Squeaky pop

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9
Q

Metal + Oxygen = Metal Oxide + Water

A

Alkaline solution

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10
Q

Non-Metal + Oxygen = non-metal dioxide + water

A

Acidic solution

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11
Q

Methylene orange

A

Acid - Red
Neutral - Yellow
Alkalis - Yellow

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12
Q

Phenolphthalein

A

Acid - colourless
Neutral - colourless
Alkalis - pink

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13
Q

Blue litmus Paper

A

Acid - Red
Neutral - blue
Alkalis - Blue

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14
Q

Red litmus paper

A

Acid - Red
Neutral - Red
Alkalis - Blue

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15
Q

Acid

A

H+ Donor

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16
Q

Alkalis

A

OH- Donor

17
Q

Base

A

H+ acceptor

18
Q

Acid + Base —>

A

Salt + water

19
Q

How do you obtain pure dry crystals?

A

Add Base to hot acids
Filter out excess base
Pour salt solution in evaporating dish
Heat Solution
Once crystals start to form remove from heat
Leave to allow time for crystals to form
Filter out excess solution
Pat crystals dry with filter paper to remove excess water

20
Q

Acid + Carbonate —>

A

Salt + Water + Carbon dioxide

21
Q

Acid + Metal —>

A

Salt + Hydrogen

iGCSE Chemistry (13 decks)

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