1-chloropentane Animation Play

A covalent bond between the same atoms Animation Play

A covalent bond in a hydrogen molecule Animation Play

A Lewis dot-and-cross diagram of a hydrogen chloride molecule Animation Play

A model of a morphine molecule Illustration Play

A molecule of methanamine Animation Play

A proof for rapid exchange of hydrogen atoms in hydroxyl groups Slideshow Play

A single covalent bond Animation Play

Ability to react with metals Animation Play

Abiotic factors Slideshow Play

Abundance of chemical elements in nature Student activity Play

Abundance of elements in nature Slideshow Play

Abundance of the principal elements in the Universe Slideshow Play

Acid dissociation constant and pH (1) Student activity Play

Acid dissociation constant and pH (2) Student activity Play

Acid dissociation constant and pH (2) Whiteboard exercise Play

Acid dissociation constant for lactic acid Animation Play

Acid rain destroys forests Animation Play

Acidic oxides Animation Play

Acidic properties of hydrogen halides Simulation Play

Acidic properties of hydrogen halides Student activity Play

Acidity reaction (hydrolysis) of metal ions Student activity Play

Acids (1) Whiteboard exercise Play

Acids (1) Student activity Play

Acids (2) Student activity Play