4. Define the following in your own words. Give two examples of each.
(a) Acid
(b) Base
(c) Salt
5. What is the source of litmus solution and where do we use it?
6. Differentiate between acids and bases.
Answers
Answer:
4)1. An acid is defined as a substance whose water solution tastes sour, turns blue litmus red and neutralizes bases.
2. A substance is called base if its aqueous solution tastes bitter, turns red litmus blue or neutralizes acids.
3. Salt is a neutral substance whose aqueous solution does not affect litmus.
5) Litmus is a water-soluble mixture of different dyes extracted from lichens. It is often adsorbed onto filter paper to produce one of the oldest forms of pH indicator, used to test materials for acidity.
6) A substance, mostly liquid that donates a proton or accepts an electron pair in reactions. An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
Explanation:
acid: acids are a type of chemicals. all most all liquids liquids are either acids or bases. to some degree. weather a liquid is a acid it depends on the type of irons in it.
1) acids can help meutralize bases and vice versa.
2) acids turn litmus paper red
3) acids taste sour.
4) vitamin c is also an acid and is called ascorbic acid.
base: there are common use of bases like arrhenious bases, bronsed bases and lewis bases.so bases are nothing but slippery to touch , can taste bitter, change colours in indicators.
salt: in chemistry salt is a chemical compound consisting of an ironic assembly of cations and anions.salt is produced with the reaction of acid and base. a salt consists of a positive iron
2) ouestion answer:
in case of acids we use: blue litmus paper turns red
in case of bases we use: red litmus paper turns blue
for 3) question .. use the differentiate as the difine of acids and bases
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