Acids Bases Salts YEAR 9 Flashcards by Ben Goodchild | Brainscape

Q

neutral pH

A

7

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Q

Litmus paper

A

Red in acid
Blue in alkali

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Q

Phenolphthalein colour

A

Colourless in acid
Pink in alkali

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Q

Methyl Orange colour

A

Red in acid
Orange in alkali

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Q

What ions are in Acids

A

H+ ions

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Q

What ions are in alkali

A

OH- ions

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Q

Each increase in pH represents…

A

a decrease of H+ ions by a factor of 10

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Q

What is a neutralisation reaction

A

Base react with acid
Forms salt and water

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Q

Acid + a Metal

A

Salt + Hydrogen

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Q

Acid + a Metal Oxide

A

Salt + Water

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Q

Acid + a Metal Hydroxide

A

Salt + Water

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Q

Acid + a Metal Carbonate

A

Salt + Water + Carbon dioxide

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