Finding the polar coordinates of the points Animation Play

Flow of charge through a substance Simulation Play

Flow of charge through a substance Whiteboard exercise Play

Flow of charge through a substance Student activity Play

Fool's gold Whiteboard exercise Play

Formulating a chemical equation Whiteboard exercise Play

Formulating a chemical equation Whiteboard exercise Play

Formulating a chemical equation (1) Student activity Play

Heating and cooling curves. Melting and boiling points Student activity Play

Heating and cooling curves. Melting and boiling points Whiteboard exercise Play

Heating up a substance Student activity Play

Heating up a substance Whiteboard exercise Play

How can we check whether a given substance is an element or a compound? Animation Play

How dispersion forces work Animation Play

How plants obtain the substances necessary for life Slideshow Play

How to calculate the specific heat capacity of a substance Animation Play

How to find out whether a given material is a pure substance or a mixture? Animation Play

How to find the equation of a tangent from a point to a circle? Animation Play

Hydrogen atoms on oxygen or nitrogen are usually not coupled to their neighbours Animation Play

Hydrogen bond and dispersion forces Animation Play

Hydrogen bonding Student activity Play

Hydrogen bonding and boiling points Student activity Play

Hydrogen bonding and boiling points Animation Play

Hydrogen bonds formed in ammonia and water Animation Play

Identifying oxidation–reduction reactions Student activity Play