Flash cards

Acids and alkalis

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