Question

a) Give the appropriate term defined by the statements given below:
i) It is a measure of combining power of an element with other elements.
ii) It is a chemical change in which a more active element displaces a less active
element from its salt solution.
iii) These substances do not take part in the reaction themselves but accelerate or
decelerate the rate at which the reaction occurs.
iv) Substances which absorb moisture (water vapour) from the atmosphere when they
are exposed to it but not enough to form solutions.
v) They are atoms of the same element having the same atomic number but different
mass numbers.​

Answer 1

iii option is correct......

Answer 2

Answer:

1. valency
2. single displacement reaction
3. catalyst
4. hygroscopic substances
5. isotopes

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