List the differences between an acid and a base.
Important Questions on Acids, Bases and Salts
You were provided with five solutions labeled as A, B, C, D and E to test them with natural indicators, blue and red litmus papers. You noted down your observations in the table given on the next page. Think and answer the following questions:
| Solution | Blue litmus | Red litmus |
| A | Red | Red |
| B | Red | Red |
| C | Blue | Blue |
| D | Blue | Red |
| E | Red | Red |
Which solution is a base? Which solution is neutral? How many acids have been tested?
You were provided with five solutions labelled as A, B, C, D and E to test them with natural indicators, blue and red litmus papers. You noted down your observations in the table given on next page. Think and answer the following questions:
| Solution | Blue litmus | Red litmus |
| A | Red | Red |
| B | Red | Red |
| C | Blue | Blue |
| D | Blue | Red |
| E | Red | Red |
What would be the colour of turmeric paper indicator in solution C?
| Solution | Blue litmus | Red litmus |
| A | Red | Red |
| B | Red | Red |
| C | Blue | Blue |
| D | Blue | Red |
| E | Red | Red |
Complete the crossword with the help of the given clues.
Down
. A substance that turns blue litmus red.
. A substance that is neither acidic nor basic.
. Tartaric acid is found in this foodstuff.
. A substance formed when an acid is neutralised with a base.
. Substances that feel soapy on touching.
Across
. A substance that changes colour in acidic and basic media.
. The colour of china rose indicator in acidic solutions.
. Oxalic acid is found in this foodstuff.
. Taste of an acid.
