Variable oxidation states – iron and copper Student activity Play

Variable oxidation states – iron and copper Whiteboard exercise Play

Variable oxidation states – manganese Whiteboard exercise Play

Variable oxidation states – manganese Student activity Play

Variable oxidation states – vanadium, cobalt, nickel and zinc Whiteboard exercise Play

Variable oxidation states – vanadium, cobalt, nickel and zinc Student activity Play

Water in a container Animation Play

Water in different states Slideshow Play

Water, nitrogen and lead Slideshow Play

Waves of matter Class activity Play

Waves of matter Whiteboard presentation Play

Wetting and meniscus Student activity Play

Wetting and meniscus Whiteboard exercise Play

Wetting of the sides of a container Animation Play

What affects the colour of transition metal compounds Animation Play

What are gases? Animation Play

What are the differences between the three physical states of the same type of matter? Student activity Play

What is a biogeochemical cycle? Student activity Play