Water and ice at equilibrium Animation Play

Water pressure Animation Play

Water solutions of sulphuric acid and sulphurous acid Whiteboard exercise Play

Weight Class activity Play

Weight of milk Whiteboard exercise Play

What affects refraction? Simulation Play

What affects refraction? Whiteboard exercise Play

What affects refraction? Student activity Play

What are algebraic expressions used for? Student activity Play

What can hot air do Student activity Play

What does the depth of immersion depend on? Student activity Play

What does the depth of immersion depend on? Whiteboard exercise Play

What is a solution? Animation Play

What is molarity? Animation Play

What is the mass of water in the pool Animation Play

What is titration about? Student activity Play

Which line is steeper? Animation Play

Which line is steeper? Student activity Play

Why does the electronegativity change across a period? Animation Play

Why don't solids change their shape spontaneously? Animation Play

Why ecosystems change Slideshow Play

Why the volume of a liquid does not depend on the vessel? Animation Play

Work and change in potential energy Animation Play

Work and the time necessary to perform it – part 2 Student activity Play

Work causes a change in energy Simulation Play