Acids and Alkalis Flashcards
1
Q
What are the colours of UI?
A
Acid - red
Neutral - green
Alkali - violet/blue
2
Q
What are the colours of phenolphthalein?
A
Acid - colourless
Neutral - Colourless
Alkali - Pink
3
Q
What are the colours of Litmus indicator?
A
Acid - Red
Neutral - Purple
Alkali - Blue
4
Q
What are the colours of Methyl Orange indicator?
A
Acid - Red
Neutral - Orange
Alkali - Yellow
5
Q
What are acids?
A
Chemicals that are 0-6 on the ph scale that react with water to form H+ ions.
6
Q
What are alkalis?
A
Chemicals that are 8-14 on the ph scale that react with water to form OH- ions.
7
Q
What are bases?
A
Insoluble alkalis.
8
Q
Acid + Alkali?
A
Salt + Water (Neutralisation)
9
Q
Give examples of Bases
A
metal oxides, metal hydroxides and ammonia
can act as bases.
