Week-2 Lecture-4: What are Compounds?
Following websites may be visited to know more about compounds:
1. https://www.chemicool.com/definition/compound.html
2. https://sciencing.com/true-statements-compound-8580947.html
3. https://en.wikipedia.org/wiki/Chemical_compound
4. https://study.com/academy/lesson/what-is-a-compound-lesson-for-kids.html