Investigating factors affecting enzymesQuick View
Karen Hamshaw-Hart

Investigating factors affecting enzymes

(2)
This is a simple, step by step practical investigating the effect of temperature, concentration and pH on the catalase/hydrogen peroxide reaction. The method is simple and reliable and requires only 1 working water bath. This is one of the required practicals on the new AQA scheme of work. It is based, with thanks, on other resources found on TES Resources.
Water pollution indicator speciesQuick View
Karen Hamshaw-Hart

Water pollution indicator species

(2)
A simple worksheet allowing lower ability students to label a river with the species expected at various parts. Also suitable for a starter or review. Images taken from other resources available here and re-edited.
Metals and acidsQuick View
Karen Hamshaw-Hart

Metals and acids

(0)
Worksheet aimed at levels 4-5 with extension tasks up to level 6. Based on practical reacting hydrochloric acid with magnesium, calcium and zinc. Students represent chemical reactions using word and symbol equations.