Energy changes during processes Slideshow Play

Energy changes during the combustion of Period 3 elements in oxygen Animation Play

Energy in chemical reactions Student activity Play

Enthalpy and entropy changes Animation Play

Enthalpy changes Animation Play

Enthalpy changes Animation Play

Enthalpy changes in the solution process Class activity Play

Enthalpy changes in the solution process Whiteboard presentation Play

Entropy and spontaneous changes Whiteboard exercise Play

Entropy and spontaneous changes Student activity Play

Environmental changes – dietary changes Whiteboard exercise Play

Environmental changes – dietary changes Student activity Play

Environmental variation of the arrowhead Animation Play

Events causing changes in the concentration of oxygen in the Earth's atmosphere Whiteboard exercise Play

Examples of adaptations to daily changes Illustration Play

Examples of adaptations to seasonal changes Illustration Play

Exploitation of natural resources Whiteboard exercise Play

Fetal circulation and its changes after birth Student activity Play

Field changes Whiteboard exercise Play

Genetic sources of variation Animation Play

Heterothermy Student activity Play

How a tulip flower reacts to changes in the weather conditions Simulation Play

How did the atmosphere form? Student activity Play

How do changes in temperature affect the volume of bodies? Animation Play

How do changes in temperature affect the volume of bodies? Animation Play