C1 Assessed Activity AF4: Indigestion Remedies
What is indigestion? <ul><li>Feeling sick </li></ul><ul><li>Feeling too full </li></ul><ul><li>Bloated </li></ul><ul><li>P...
A cause of indigestion!
The reason for indigestion <ul><li>Eating too much food stimulates production of acid. When we eventually stop eating not ...
A cure for indigestion These products are called “antacids”
How do antacids work? <ul><li>The purpose of an antacid is to neutralise the acid in your stomach </li></ul><ul><li>Can yo...
There are many different antacids for sale in the shops. Suppose we want to answer the question Which antacid is best?
What do we mean by “best”? <ul><li>Cheapest? </li></ul><ul><li>Easiest to use? </li></ul><ul><li>Most effective? </li></ul...
Which antacid is the cheapest? <ul><li>How much does a packet cost? </li></ul><ul><li>What is the recommended dose? </li><...
Which antacid is the easiest to use? <ul><li>What makes a medicine easy to use? </li></ul><ul><li>How could we measure the...
Which antacid is the most effective? <ul><li>The purpose of the antacid is to neutralise stomach acid.  </li></ul><ul><li>...
The experiment - hints <ul><li>A “recommended dose” of antacid could be a useful measure </li></ul><ul><li>A small fixed a...
An example of  someone else’s results
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C1 assessed activity

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Introductory slide show for year 7 class doing an APP activity for AF4

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Transcript of "C1 assessed activity"

  1. 1. C1 Assessed Activity AF4: Indigestion Remedies
  2. 2. What is indigestion? <ul><li>Feeling sick </li></ul><ul><li>Feeling too full </li></ul><ul><li>Bloated </li></ul><ul><li>Painful tummy </li></ul><ul><li>Needing to burp (and worse!) after a big meal </li></ul>
  3. 3. A cause of indigestion!
  4. 4. The reason for indigestion <ul><li>Eating too much food stimulates production of acid. When we eventually stop eating not all the acid is used up. </li></ul><ul><li>What is left gives us indigestion. </li></ul>The stomach makes hydrochloric acid to kill bacteria and start to digest food.
  5. 5. A cure for indigestion These products are called “antacids”
  6. 6. How do antacids work? <ul><li>The purpose of an antacid is to neutralise the acid in your stomach </li></ul><ul><li>Can you think of an experiment we could do to see if an antacid does this? </li></ul><ul><li>http://www.stevespanglerscience.com/experiment/color-changing-milk-of-magnesia </li></ul>
  7. 7. There are many different antacids for sale in the shops. Suppose we want to answer the question Which antacid is best?
  8. 8. What do we mean by “best”? <ul><li>Cheapest? </li></ul><ul><li>Easiest to use? </li></ul><ul><li>Most effective? </li></ul>How can we measure any of these?
  9. 9. Which antacid is the cheapest? <ul><li>How much does a packet cost? </li></ul><ul><li>What is the recommended dose? </li></ul><ul><li>How many doses are there in the packet? </li></ul><ul><li>What is the cost per dose? </li></ul><ul><li>Which is the cheapest? </li></ul><ul><li>Is this the best value? </li></ul>
  10. 10. Which antacid is the easiest to use? <ul><li>What makes a medicine easy to use? </li></ul><ul><li>How could we measure the things you thought of? </li></ul><ul><li>Could we ask people what they thought? </li></ul><ul><li>How could we make sure this gave a fair result? </li></ul><ul><li>Which medicine do you think is easiest to use? </li></ul>
  11. 11. Which antacid is the most effective? <ul><li>The purpose of the antacid is to neutralise stomach acid. </li></ul><ul><li>Stomach acid is hydrochloric acid, so we can use hydrochloric acid to test the effectiveness of each product in the lab. </li></ul><ul><li>Would the antacid which neutralised the most stomach acid be the most effective? </li></ul>
  12. 12. The experiment - hints <ul><li>A “recommended dose” of antacid could be a useful measure </li></ul><ul><li>A small fixed amount of acid could be measured in a dropping pipette. </li></ul><ul><li>Universal indicator will show you when the acid is no longer being neutralised by the antacid. </li></ul><ul><li>The question you want to answer is “Which antacid is best” </li></ul>
  13. 13. An example of someone else’s results

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