These downloadable videos and animations are part of the multimedia package Stuff and Substance, developed by the Gatsby Science Enhancement Programme (SEP). They can be used to develop ideas relating to the characteristic reactions of acids.

These downloadable videos are part of the multimedia package Stuff and Substance, developed by the Gatsby Science Enhancement Programme (SEP). They can be used to introduce ideas of the energy changes which accompany changes of state.

These downloadable videos and animations are part of the multimedia package Stuff and Substance, developed by the Gatsby Science Enhancement Programme (SEP). They can be used to develop ideas relating to paper chromatography as a method for separating mixtures.

Ball on a tether released (horizontal plane)

Circular motion: ball on tether released (vertical plane)

Circular motion: horizontal ball in a hoop (Tim holding)

Circular motion: vertical ball in a hoop (clamped)

Circular motion: vertical ball in hoop (Tim holding)

Collisions: inelastic collision top view

Collisions: inelastic little spin

Collisions: large mass into small mass from above

Collisions: oblique collision

Collisions: rebound (v-t)

Collision: small mass into large mass

Collisions: two equal mass head on above (drift)