Experiment & photos 1


Apr. 28, 2009

Experiment


Do you know the content of vitamin C in different fruits,especially the fruits you eat every day? Is it the same? And how about the vegetables you don't like? Do an experiment by yourselves and tell the result.

Apr. 28, 2009

Experimental Report of oranges & tangerines

  • Put a question

    Which are higher in vitamin C content,oranges or tangerines ?

  • Make a supposition

    Oranges are higher in vitamin C.

  • Make a plan

    Materials: test-tube, dropper, potassium permanganate, juicer, oranges and tangerines .

  • Implementation

    oranges and tangerines with the juicer. Second put some dilute potassium permanganate into two test-tube, 4 ml in each test-tube.Next put orange juice into one of the test-tube and tangerine juice into the other test-tube one drop by one drop.At last watch the process of changes

  • Get the conclusion

    Tangerines are higher in vitamin C.

Apr. 28, 2009

My pictures of oranges & tangerines experiment

 + 
  
 + 
Prepare   Pour the juice into the test-tube
Apr. 28, 2009

My pictures of experiment

 + 
  
 + 
The color changes   An exciting result
Apr. 28, 2009

Experimental Report of pears & pineapples

  • Put a question

    Which are higher in vitamin C content, pears or pineapples ?

  • Make a supposition

    Pineapples are higher in vitamin C.

  • Make a plan

    Materials: test-tube, dropper, potassium permanganate, juicer, pineapples and pears

  • Implementation

    First make different kinds of juice from pineapples and pears with the juicer. Second put some dilute potassium permanganate into two test-tubes, 4 ml in each test-tube.Next put pineapples juice into one of the test-tube and pears juice into the other test-tube one drop by one drop.At last watch the process of change.

  • Get the conclusion

    Pears are higher in vitamin C.

Apr. 28, 2009

Experiment Report of cabbage leaves & stems

  • Put a question

    Which are higher in vitamin C content, Chinese cabbage leaves or Chinese cabbage stems?

  • Make a supposition

    Chinese cabbage leaves are higher in vitamin C.

  • Make a plan

    Materials: test-tube, dropper, potassium permanganate, juicer, Chinese cabbage leaves and Chinese cabbage stems

  • Implementation

    First make different kinds of juice from Chinese cabbage leaves and Chinese cabbage stems with the juicer. Second put some dilute potassium permanganate into two test-tubes, 4 ml in each test-tube.Next put Chinese cabbage leaves juice into one of the test-tube and Chinese cabbage stems juice into the other test-tube one drop by one drop.At last watch the process of change.

  • Get the conclusion

    Chinese cabbage leaves are higher in vitamin C.

Apr. 28, 2009

Pictures of the experiment cabbage leaves & stems

 + 
  
 + 
Prepare.It's much easier to get juice with juicer than with a small glass bowl.   Pour the Chinese cabbage leaf juice into the test-tube
Apr. 28, 2009

Pictures of the experiment cabbage leaves & stems

 + 
  
 + 
The color changes   The amazing result