Explanation:
Hey there!!
An elements is called a pure substance because it is composed of only one kina of atoms in a fix proportion.
<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
Answer:
Elements are pure substances because elements are always made up of same kind of particles.
Example:- pure Iron rod (iron is an element)is made up of many similar Iron atoms.
Answer:3000
Slope in Mathematics means the inclination of a line