Indicators Flashcards
1
Q
what is a indicator
A
it is a substance to measure the acidity or alkalinity of a solution
2
Q
what are the indicators
A
- universal indicator
- litmus paper
- phenolphthalein
- methyl orange
3
Q
universal indicator…
A
very acidic- red acidic- orange/yellow neutral- green alkaline- blue very alkaline- purple
4
Q
litmus paper…
A
acid- red
alkali- blue
5
Q
phenolphthalein…
A
acid- colourless
very alkaline- pink
6
Q
methyl orange…
A
very acidic- red
alkaline- yellow
7
Q
what is a pH meter
A
a device which can measure the acidity or alkalinity of a solution
8
Q
natural indicators
A
red cabbage and hydrangea flower ( go rmbr the colours)
