In a compound, the elements are (i)_______ in a (ii)_______ proportion by mass.
(i) mixed (ii) direct
(I) diffused (ii) variable
(i) physically combined (ii) any
(i) chemically combined (ii) fixed
In a compound, the elements are chemically combined in a fixed proportion by mass.
In a compound, the elements are _______ in a _______ proportion by mass.
In a chemical compound, the elements are always present in definite proportions by mass.