What factors affect the process of diffusion? Student activity Play

What factors affect the process of diffusion? Animation Play

What happens during the process of dissolution? Animation Play

What happens to the energy stored in food? Slideshow Play

What if gases did not mix with each other? Animation Play

What is a translation? Animation Play

What is the structure of gases? Student activity Play

What is the structure of liquids? Student activity Play

What is the structure of liquids? Animation Play

What is the structure of solids? Student activity Play

When is 'work' not work Student activity Play

Why don't solids change their shape spontaneously? Animation Play

Zero and opposite vectors Student activity Play

α particles Animation Play

β decay Student activity Play