Match the following physical or chemical characteristics by writing the words acids or bases:

Turns red litmus paper blue.
Reacts with metals to form hydrogen gas.
Reacts with carbonates to form carbon dioxide and water.
Feels slippery.
Tastes sour.
Reacts with acids to form salts.
Tastes bitter.
Turns blue litmus paper red.

Bases:

- Turns red litmus paper blue.
- Feels slippery.
- Tastes bitter.
- Reacts with acids to form salts.

Acids:
- Reacts with metals to form hydrogen gas.
- Reacts with carbonates to form carbon dioxide and water.
- Tastes sour.
- Turns blue litmus paper red.