photosynthesis rq practical
Cards (17)
- What is the first step in the practical investigation of photosynthesis?
- Why is an LED light source preferred in this experiment?
- What should you do if using a normal light bulb instead of an LED?
- What solution is filled in the boiling tube for the experiment?
- What does sodium hydrogen carbonate solution release that is needed for photosynthesis?
- What should be placed in the boiling tube with the cut end at the top?
- How long should the pond weed be left to acclimatize in the boiling tube?
- What gas is produced by the pond weed during photosynthesis?
- What should you do after starting the stopwatch in the experiment?
- How many times should the experiment be repeated to calculate the mean number of bubbles produced?
- What distances should the experiment be repeated at after the initial 10 centimeters?
- What are the two main problems with counting bubbles in this practical?
- How can the problems with counting bubbles be solved?
- What equipment is used to measure the volume of oxygen produced?
- What happens to the number of bubbles per minute when the distance from the light source is doubled?
- What is the scientific term for the relationship between distance and light intensity in this experiment?
- Why does the number of oxygen bubbles fall when the distance is increased?