Chemistry - Atomic Structure - Introduction to atoms - How Small is an Atom?

A mind-bending scale visualization for Grade 7-8. Step 1: Show a human hair. 'This is a human hair. Pretty thin, right? About 0.1mm wide.' Step 2: 'Now imagine lining up atoms across this hair...' Zoom in animation. Step 3: 'You'd need about 500,000 atoms side by side to cross one hair!' Show the nu