Daily changes - statements Whiteboard exercise Play

Decomposition of calcium carbonate Animation Play

Deriving the expression for free energy change Animation Play

Determination of enthalpy change in combustion reactions Whiteboard exercise Play

Determination of enthalpy change in combustion reactions (1) Student activity Play

Determination of enthalpy change in combustion reactions (2) Student activity Play

Determining standard enthalpies of reaction Whiteboard exercise Play

Determining the enthalpy of solution of sodium hydroxide Animation Play

Determining the mean bond enthalpy for polyatomic molecules Animation Play

Directional changes in an ecosystem Animation Play

Discontinuous variation Slideshow Play

Discontinuous variation Student activity Play

Diseases related to chromosome changes Illustration Play

Distinguish between a physical and a chemical changes Whiteboard exercise Play

Diurnal changes in the body temperature of the camel Animation Play

Doubling time changes Student activity Play

Doubling time changes Whiteboard exercise Play

Early research on mutations Slideshow Play

Effect of temperature on free energy change Student activity Play

Effect of ΔH° and ΔS° on free energy change Student activity Play

Effects of changes in blood volume on the volume of excreted urine Simulation Play

Electric field changes Animation Play

Electric field changes Whiteboard exercise Play

Electric field changes Student activity Play

Emotional changes Student activity Play