# 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