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03inhaledexhaledair

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03inhaledexhaledair

  1. 1. inhaled and exhaled air
  2. 2. Investigating inhaled and exhaled air suck blow Inhaled air Exhaled air
  3. 3. What else do you breathe out? <ul><li>Method </li></ul><ul><li>Cobalt chloride paper is blue when it is dry. </li></ul><ul><li>Put a drop of water onto a piece of dry cobalt chloride paper </li></ul><ul><li>2 Breathe out heavily onto a mirror several times. </li></ul><ul><li>3 Put a second piece of dry cobalt chloride paper onto the mirror. </li></ul>
  4. 4. Temperature of exhaled air <ul><li>Method </li></ul><ul><li>1 Measure the temperature of the air with the thermometer. </li></ul><ul><li>Breathe heavily onto the bulb of the thermometer several </li></ul><ul><li>times and record the temperature of your breath. </li></ul>Breath temperature (°C) Air temperature (°C)
  5. 5. Write up <ul><li>Describe what you have done and found out </li></ul><ul><li>Explain the science behind this work </li></ul>
  6. 6. The composition of air <ul><li>Describe these differences and explain why they occur </li></ul><ul><li>Draw 2 pie charts to display this data (use a compass/protractor/calculator) </li></ul><ul><li>What other differences are there, that are not shown in the table </li></ul><ul><li>If you breathe out poisonous carbon dioxide, how can you revive someone by mouth to mouth resuscitation? </li></ul>16 20.96 oxygen 5 0.04 Carbon dioxide 79 79 nitrogen Exhaled % Inhaled %
  7. 7. Plenary <ul><li>Put these statements in a logical order: </li></ul><ul><li>Glucose is absorbed into the blood from the gut and carried to respiring cells. </li></ul><ul><li>Carbon dioxide is exhaled. </li></ul><ul><li>Oxygen is absorbed into the blood and carried to the respiring cells. </li></ul><ul><li>Digestion breaks down carbohydrates into glucose. </li></ul><ul><li>Respiration releases energy from glucose using oxygen. </li></ul><ul><li>Carbon dioxide is carried to the lungs in the blood. </li></ul><ul><li>Carbon dioxide and water are waste products of respiration. </li></ul>

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