The substance which is homogeneous and invariable in chemical composition throughout its mass is called as.

The substance which is homogeneous and invariable in chemical composition throughout its mass is called as ____.

a. ideal substance
b. pure substance
c. solid substance
d. none of the above

Correct Answer : b. pure substance

Explanation :

Pure substances have homogeneous and invariable chemical composition throughout its mass. Atmospheric air, combustion products of fuel are the examples of pure substance.