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Which is a base? "Coffee" or "Baking Soda"
Baking Soda
To neutralise an extreme acid, an extreme ________ can be added
Base
What is the typical taste of an acid?
Sour
True or false: Acids are typically bitter
False
On the pH scale, what does the colour green signify?
Neutral
On the pH scale, what does the colour blue signify?
Base
A pH level of 2 means that it is a(n):
(strong) acid
A pH level of 13 means that it is a(n):
(strong) base
If something has a pH of 8, is it a strong base, weak base, strong acid or weak acid?
weak base
Anything with a pH lower than 7 is considered a(n):
acids
What is the pH level of water?
7
What PH number would be an example of a mild base? 14 - 9- 5 - 1
9
Which of these substances is acidic? Tap Water - Lemon - Ammonia - Baking Soda
Lemon
What do acids and bases have in common? They both eat away at metal. - They can both conduct electricity-. They both have a sour taste-. They both form positively charged ions when dissolved in water.
They can both conduct electricity
What colour does litmus paper turn when added to an alkali? Blue -Red- Green - Colourless
Blue
