This ppt tells why we mix some elements and what are the forces which are related to them.
Sign up and browse through relevant courses.
Science for Grade 7th-12th
One to one Course
Chemistry Video Lecture DVDs for XIth, XIIth and IIT
Focus on Middle School Chemistry (Level 1) (Grades 5-8)
Focus on Elementary Chemistry (Pre-Level 1) (Grades K-4)