Acid And Alkalis Flashcards
What colours suggest a weak acid?
Colours: orange and yellow
Numbers: 4-6
What suggests a strong acid?
Colours: dark orange and red
Numbers: 1-3
What auggests a weak alkali?
Colours: green and turquoise
Numbers: 8-10
What suggests a strong alkali?
Colours: blue and purple
Numbers: 12-14
What suggests a neutral liquid?
Colours: yellow/green
Number: 7
What do you use to see if a substance is an acid or alkali?
You use an indicator
hiw do you describe a weak acid?
It has particles that don’t all split up
How do you describe a strong acid?
The particles all split up
Name two strong acids
Sulfuric acid and hydrochloric acid (nitric acid)
Name two weak acids
Citric acid and acetic acid
what is an indicator?
Indicators are special dyes which change colour depending whether it’s an alkali or acid.
What are 2 types of indicators?
Litmus paper and universal indicator
What colour does litmus paper turn when it’s an acid?
it turns red
What colour does litmus paper turn when it is an alkali?
It turns blue
acid + alkali?
salt + water
This is known as a neutralisation reaction
