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Topic 3- pH indicators (Paper 1)

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Total cards: 21•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (21)

#1
Front (Question)

What colour does litmus solution turn in an acid?

Back (Answer)

Red

#2
Front (Question)

What colour does litmus solution turn in water?

Back (Answer)

Purple

#3
Front (Question)

What colour does litmus solution turn in an alkali?

Back (Answer)

Blue

#4
Front (Question)

What colour does red litmus paper turn in an acid?

Back (Answer)

Red

#5
Front (Question)

What colour does red litmus paper turn in water?

Back (Answer)

Red

#6
Front (Question)

What colour does red litmus paper turn in an acid?

Back (Answer)

Red

#7
Front (Question)

What colour does blue litmus paper turn in an acid?

Back (Answer)

Red

#8
Front (Question)

What colour does blue litmus paper turn in water?

Back (Answer)

Purple

#9
Front (Question)

What colour does blue litmus paper turn in an alkali?

Back (Answer)

Blue

#10
Front (Question)

What colour does phenolphthalein turn in an acid?

Back (Answer)

Colourless

#11
Front (Question)

What colour does phenolphthalein turn in water?

Back (Answer)

Colourless

#12
Front (Question)

What colour does phenolphthalein turn in an alkali?

Back (Answer)

Dark pink / purple

#13
Front (Question)

What colour does methyl orange turn in an acid?

Back (Answer)

Red

#14
Front (Question)

What colour does methyl orange turn in water?

Back (Answer)

Orange

#15
Front (Question)

What colour does methyl orange turn in an alkali?

Back (Answer)

Orange

#16
Front (Question)

What colour does universal indicator turn in an acid?

Back (Answer)

Red

#17
Front (Question)

What colour does universal indicator turn in water?

Back (Answer)

Green

#18
Front (Question)

What colour does universal indicator turn in an alkali?

Back (Answer)

Blue / black

#19
Front (Question)

What colour does litmus solution turn in acid, neutral solutions and alkalis?

Back (Answer)

Acid- red Neutral- purple Alkali- blue

#20
Front (Question)

What colour does methyl orange turn in acid, neutral solutions and alkalis?

Back (Answer)

Acid- red Neutral- yellow alkali- yellow

#21
Front (Question)

What colour does phenolphtalein turn in acid, neutral solutions and alkalis?

Back (Answer)

Acid- colourless neutral- colourless alkali- pink