Investigate the effect of pH on the rate of reaction (RP 5-separate science). This practical was completed in one lesson, students were asked to construct a graph from their data for homework.
How did i deliver this practical?
I used 5 different buffered pH solutions (4,5,6,7,8). I split my class into two groups ( 2 x 15). Within each group there were 5 sub-groups. This allowed me to gather two sets of results for each pH.
Group A Group B
| Student group 1-pH 4 | Student group 1-pH 4
| Student group 2-pH 5 | Student group 2-pH 5
| Student group 3-pH 6 | Student group 3-pH 6
| Student group 4-pH 7 | Student group 4-pH 7
| Student group 5-pH 8 | Student group 5-pH 8
AQA spec link: 4.2.2.1
Relevant chapter: B3 Organisation and the digestive system. AQA Biology third edition textbook-Page 46-47
Students are required to know the following;
Required practical activity 5: investigate the effect of pH on the rate of reaction of amylase enzyme.
Students should use a continuous sampling technique to determine the time taken to completely digest a starch solution at a range of pH values. Iodine reagent is to be used to test for starch every 30 seconds. Temperature must be controlled by use of a water bath or electric heater.
AT skills covered by this practical activity: AT 1, 2, 5 and 8. This practical activity also provides opportunities to develop WS and MS. Details of all skills are given in Key opportunities for skills development.
How did i deliver this practical?
I used 5 different buffered pH solutions (4,5,6,7,8). I split my class into two groups ( 2 x 15). Within each group there were 5 sub-groups. This allowed me to gather two sets of results for each pH.
Group A Group B
| Student group 1-pH 4 | Student group 1-pH 4
| Student group 2-pH 5 | Student group 2-pH 5
| Student group 3-pH 6 | Student group 3-pH 6
| Student group 4-pH 7 | Student group 4-pH 7
| Student group 5-pH 8 | Student group 5-pH 8
AQA spec link: 4.2.2.1
Relevant chapter: B3 Organisation and the digestive system. AQA Biology third edition textbook-Page 46-47
Students are required to know the following;
Required practical activity 5: investigate the effect of pH on the rate of reaction of amylase enzyme.
Students should use a continuous sampling technique to determine the time taken to completely digest a starch solution at a range of pH values. Iodine reagent is to be used to test for starch every 30 seconds. Temperature must be controlled by use of a water bath or electric heater.
AT skills covered by this practical activity: AT 1, 2, 5 and 8. This practical activity also provides opportunities to develop WS and MS. Details of all skills are given in Key opportunities for skills development.
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AQA new specification-REQUIRED PRACTICALS 1-10-Separate science
This bundle contains all 10 biology required practicals for SEPARATE science students plus a complimentary heart dissection practical lesson. All practicals apart from RP9 come with a full powerpoint, ready to deliver. All lessons have been designed in accordance to the specification requirements and have been pitched to a higher ability class. Videos have been embedded for ease of use, and printer friendly resources attached. Search the individual practical lessons for more information on the lesson content. Save 23% by purchasing this bundle :) Total = 11 lessons These lessons are suitable to teach combined science students however they do not need to do RP 2, 8 and 10. RP 1-Microscopy RP 2-Micrbiology RP 3-Osmosis RP 4-Food tests RP 5-Effect of pH on amylase enzyme RP 6-Photosynthesis RP 7-Reaction time RP 8-Germination RP 9-Field Investigations RP 10-Decay Heart dissection practical RP worksheets 1-10 Good luck with your lessons :)
£20.00
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AQA new specification-B3 Organisation and the digestive system -Complete bundle
£21.00
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