Reactions occurring on the surface of a solid catalyst Whiteboard exercise Play

Reactions of fats Student activity Play

Reactions of the carboxyl group Whiteboard exercise Play

Reactions of the carboxyl group Student activity Play

Red giants Animation Play

Red giants Student activity Play

Reduction Animation Play

Reduction of aldehydes and ketones Animation Play

Reduction of aldehydes and ketones (1) Student activity Play

Reduction of aromatic nitro compounds Animation Play

Reflecting telescopes Animation Play

Reflecting telescopes Student activity Play

Reflection of light Whiteboard exercise Play

Reflection of light Student activity Play

Reflection of light at a smooth surface Animation Play

Reflection of plane waves Animation Play

Reflection of plane waves Student activity Play

Reforming of crude oil Student activity Play

Refraction Class activity Play

Relationship between the force of friction and the roughness of a surface Animation Play

Relationship between the force of friction and the surface area Animation Play

Samples of catalytic processes Chart Play

Satellite telephones Student activity Play

Sections of a cube Student activity Play

Sections of a cube Whiteboard exercise Play