Question

Fill in the blanks:

(a) Matter is neither …………….. nor ……………... in a chemical reaction.

(b) In a compound, the constitute elements are always present in a definite proportion by ……………. .

(c) Two or more elements combine to form ………………… .

(d) The combining capacity of an element is known as its ………………. .

Answer 1

(a) Matter is neither gained nor lost in a chemical reaction.

(b) In a compound, the constitute elements are always present in a definite proportion by weight.

(c) Two or more elements combine to form a compound.

(d) The combining capacity of an element is known as its valency.