Backround On Indicators Flashcards
1
Q
What are colourful chemicals called
A
Dyes
2
Q
What is useful about litmus
A
It can test for acids / alkalis safely
3
Q
Where do we get dyes from
A
Flowers and fruits
4
Q
What is universal indicator made up of
A
A mixture of different coloured chemicals
5
Q
What does this allow us to do
A
It allows more accurate testing of acids and alkalis
6
Q
What is associated with universal indicator
A
Ph scale 1-14
