topic 2 Flashcards
1
Q
what colour is phenolphthalein when in acid
A
colourless
2
Q
what colour is phenolphthalein in an alkaline
A
pink
3
Q
what colour is methyl orange in an acid
A
red
4
Q
what colour is methyl orange in an alkaline
A
yellow
5
Q
what colour is litmus in acid
A
red
6
Q
what colour is litmus in alkaline
A
blue
7
Q
what colour is blue litmus paper in acid and alkaline
A
acid=red
alkaline=blue
8
Q
what colour is red litmus paper in acid and alkaline
A
acid= blue
alkaline= red
9
Q
what is the ph scale
A
it is a measurement of how acidic and alkaline a substance is
10
Q
what ph is neutral
A
ph 7
11
Q
what ph is acidic
A
lower than ph 7
12
Q
what ph is alkaline
A
higher than ph 7
13
Q
what solution do acids produce
A
H+
14
Q
what solutions do alkaline produce in solutions
A
OH
15
Q
what is a neutralisation
A
Neutralisation is when an acid and a base react
