knowledge and understanding develop over time (HSW7). THINKING CONTEXTUALLY O(k) the term weak acid and equations pH calculations worksheet (OCR for its ionisation in water; Lesson Element) acidity constant (‘dissociation A worksheet going through pH constant’) pKa; Ka, calculations in ever increasing depth. techniques and procedures to measure the pH of a solution THINKING CONCEPTUALLY O(l) the term pH, and pH calculations pH and buffers in action (OCR Lesson involving: Element) (i) strong acids This worksheet real illustrations of pH (ii) strong bases, using Kw and buffers in food, biological and (iii) weak (including calculating any environmental science. This resource can of the terms pH, Ka and concentration be used to develop chemical literacy from any two others, being aware of skills. the approximations made) THINKING CONTEXTUALLY O(m) buffer solutions based on Greenhouse effect (Royal Society of solutions of weak acids and their salts: Chemistry) (i) the meaning of the term buffer This demonstration from the Royal (ii) how buffers work (including in Society of Chemistry is designed to show everyday applications) how visible and UV light can be (iii) buffer solution calculations as IR and cause a warming effect. THINKING CONCEPTUALLY
knowledge and understanding develop over time (HSW7). THINKING CONTEXTUALLY O(k) the term weak acid and equations for its ionisation in water; acidity constant (‘dissociation constant’) Ka, pKa; techniques and procedures to measure the pH of a solution pH calculations worksheet (OCR Lesson Element) A worksheet going through pH calculations in ever increasing depth. THINKING CONCEPTUALLY O(l) the term pH, and pH calculations involving: (i) strong acids (ii) strong bases, using Kw (iii) weak (including calculating any of the terms pH, Ka and concentration from any two others, being aware of the approximations made) pH and buffers in action (OCR Lesson Element) This worksheet real illustrations of pH and buffers in food, biological and environmental science. This resource can be used to develop chemical literacy skills. THINKING CONTEXTUALLY O(m) buffer solutions based on solutions of weak acids and their salts: (i) the meaning of the term buffer (ii) how buffers work (including in everyday applications) (iii) buffer solution calculations Greenhouse effect (Royal Society of Chemistry) This demonstration from the Royal Society of Chemistry is designed to show how visible and UV light can be as IR and cause a warming effect. THINKING CONCEPTUALLY
Chemistry%20B%20Resources%2011-11-16.docx