The number of decayed nuclei and the number of remaining nuclei Student activity Play

The octet rule Animation Play

The reactivity of metals and the electron configuration Animation Play

The reactivity of the s-block metals (2) Student activity Play

The relationship between the electronegativity of elements and the chemical properties of their compounds Student activity Play

The stability of a nucleus Student activity Play

The stability of a nucleus Illustration Play

The stability of a nucleus Illustration Play

The stability of electron configuration Animation Play

The structure of hydrogen halides Animation Play

The structure of the periodic table – groups (1) Student activity Play

Transition metals Student activity Play

Trend in the reactivity of halogens Animation Play

Variable oxidation states – iron and copper Student activity Play

What is a covalent bond? Student activity Play