acids, alkalis and titrations

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

acids are substances that turn litmus paper what colour

Back (Answer)

red, yellow or orange

Front (Question)

acids have a pH

Back (Answer)

below 7

Front (Question)

bases turn litmus paper what colour

Back (Answer)

sark green, blue or purple

Front (Question)

what are bases called if they dissolve in water

Back (Answer)

alkali’s

Front (Question)

bases react with _____ in acids

Back (Answer)

H+ ions

Front (Question)

use of universal indicator

Back (Answer)

measure pH of a solution

Front (Question)

colour of universal indicator with acid

Back (Answer)

red

Front (Question)

colour of universal indicator with alkali

Back (Answer)

blue

Front (Question)

use of phenolphalein indicator

Back (Answer)

determine the end point of a strong alkali or weak acid TITRATIONS

#10

Front (Question)

what is an alkali

Back (Answer)

a soluble base

#11

Front (Question)

colour of phenolphthalein indicator in acid

Back (Answer)

colourless

#12

Front (Question)

colour of phenolphthalein indicator in alkali

Back (Answer)

pink

#13

Front (Question)

colour of methyl orange in acid

Back (Answer)

red

#14

Front (Question)

colour of methyl orange in alkali

Back (Answer)

yellow

#15

Front (Question)

how is universal indicator used

Back (Answer)

a drop of it is added to the solution and colour is matched to the colour chart which indicates the pH

#16

Front (Question)

use of methyl orange indicator

Back (Answer)

determine the end point of a strong acid- strong alkali or strong acid- weak alkali TITRATIONS

#17

Front (Question)

When acids are added to water they form

Back (Answer)

positive hydrogen ions

#18

Front (Question)

what makes a solution acidic

Back (Answer)

presence of hydrogen ions

#19

Front (Question)

when alkalis are added to water, what is formed

Back (Answer)

negative hydroxide ions

#20

Front (Question)

what makes a solution alkaline

Back (Answer)

hydroxide ions

#21

Front (Question)

what happens when an acid and an alkali react

Back (Answer)

a neutralisation reaction

#22

Front (Question)

Ionic equation of neutralisation ( H)

Back (Answer)

H⁺ + OH⁻ —-> H₂O

#23

Front (Question)

4 common indicators

Back (Answer)

litmus universal phenolphthalein methyl orange

#24

Front (Question)

the point at which an indicator changes colour is known as the

Back (Answer)

end point