Mammoth Memory

Testing acids and alkalis using universal indicator

Acids turn red when an indicator is added.

 

Using the universal indicator acids turn red
You would try to kill a zombie with a bath of acid, which would turn red if you did! (Acidic solutions turn universal indicator red).    

 

A neutral solution (like water) will turn green.

Using the universal indicator neutral substances turn green
Think of a gear stick sticking out of a chameleon; when the gear stick is in the neutral position, the chameleon turns green

 

An alkaline solution will turn universal indicator blue or purple

Using the universal indicator alkali substances turn blue or purple
Bleach (an alkaline) comes in a blue bottle.
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