Flash cards

Acids and alkalis

1. Water would be best described as
pH1
Strong acid
pH7
Neutral
pH8
Weak alkali
pH6
A weak acid
2. If weak lemon juice was added to Universal Indicator what colour would it turn?
Purple
Strong alkali (pH 13,14)
Yellow
Weak acid (pH5 -6)
Red
Strong acid (pH 1or 2)
Blue
Weak alkali (pH8, 9 or 10)
Green
Neutral (pH7)
3. If Magnesium hydroxide (indigestion powder) were added to vinegar which of the answers would best describe what would happen?