Spontaneous changes and probability Student activity Play

Stability of the spatial structure of DNA Student activity Play

Standard enthalpy of formation Student activity Play

Standard enthalpy of formation for phosphorus trichloride Whiteboard exercise Play

Statements about melting points Illustration Play

Statements about refraction of light Whiteboard exercise Play

Strange optical effects Slideshow Play

Streamlining to reduce friction Illustration Play

Structure and properties of macromolecular crystals Animation Play

Structure and properties of molecular crystals Animation Play

Surfaces and friction Simulation Play

The boiling point Student activity Play

The Celsius scale Animation Play

The Celsius scale Whiteboard exercise Play

The Celsius scale Student activity Play

The course of transcription Student activity Play

The density of ice Animation Play

The Fahrenheit scale Student activity Play

The heat of fusion Whiteboard exercise Play

The heat of fusion Student activity Play

The heat of fusion Simulation Play

The heat of fusion Animation Play

The heat of fusion of ice Animation Play

The melting points and boiling points of transition elements Animation Play

The melting points of simple molecular solids Animation Play