determine the relationship between potential diference and rate of photosynthesis

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GROUP 4 PROJECT PHYSICS REPORT

NAME: ZHUANG YUAN  CLASS: 5.08KINGS

Background information

We have read some article on the internet regarding the ‘relationship between electrical conductivity and ions present’. Here is some abstract from the internet article: ‘……however the difference in times of occurrence of the maxima of the polar conductivity and various ions concentrations indicate that all ions of different categories may contribute to polar conductivity in varying degrees’(source from the internet  ) hence our project is aimed at relating the ions present with the environment using a physics approach.

Purpose

To find the conductivity of pond water and its relationship with the presence of ion.

Hypothesis

 The higher the potential difference of the pond water the more ions present.

Variable

Equipment and apparatus

Procedure

Procedures

1) Use the measuring cylinder to collect 150 ml of the pond water and put it separate glass beaker

2) Label the glass beaker respectively

3) Take the multimeter and adjust it to 2V DC mode

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4) Immerse the electrodes into the pond water and record the readings

5) Repeat step 4 and take several readings

6) Ensure that the depth and the distance between the electrodes remain constant every time reading is taken

7) Use pipette to take 20.0 ml of the pond water sample

8) Measure the mass of the conical flask

9) Measure the mass of the conical flask after the addition of sample pond water

10) Record the data obtained

11) Show relationship between density and conductivity

Data collection

Table of potential difference of collected sample of pond water

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