acid and alkali Flashcards
(7 cards)
1
Q
what is a pH sale?
A
the lower the pH the stronger the acid
the hight the pH the stronger the alkali
2
Q
what is an indicator
A
a dye which changes colour depending on if it’s an alkali or acid
3
Q
what colour is alkali?
A
blue or purple
3
Q
what colour is acid?
A
red
4
Q
what does neutralisation mean ?
A
when a acid reacts with a alkali to make salt and water
5
Q
what colour is neutralisation?
A
green
6
Q
sulfric + copper oxcide –> –> water
A
copper sulfate
