1. Acids taste sour, turn litmus paper blue, conduct electricity, are corrosive.
2. Bases are slippery, bitter, turn litmus paper red, and conduct electricity.
3. An acid will turn litmus paper blue, while a base will turn it red.
4. If it has the word acid, or if it has the -ic suffix.
5. The fertilizer is corrosive to the skin, and could cause irritation since it is an acid.
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