Inheritance of colour blindness and other sex-linked traits Whiteboard exercise Play

Ozone hole: effects Student activity Play

Permanent dipoles Whiteboard exercise Play

Permanent dipoles Whiteboard exercise Play

Permanent dipoles Student activity Play

Permanent dipole–dipole moment Animation Play

Permanent dipole–permanent dipole forces Student activity Play

Permanent dipole–permanent dipole interaction in liquids and gases Animation Play

Permanent magnets Slideshow Play

Removing permanent hardness of water Animation Play

Smoking and diseases of the circulatory system Slideshow Play

Syphilis – delicate but deadly Student activity Play

The hardest substance in the skeleton Student activity Play

The harmful effect of methanol Animation Play

Types of colour blindness Whiteboard exercise Play