Question

Classify the following into elements and compounds:
Iron, Iron Sulphide, Oxygen, Carbon, Urea, Sodium, Chalk, Washing soda
and Gold.

Answer 1

Answer:

From the given substance we see that only iron, sulphur, sodium and carbon are in its pure form without combining with other atoms. Hence they are classified as elements. On the other hand these substances iron sulphide, chalk, washing soda, urea are compounds which are made up of multiple elements.