Saturday, 21 July 2012

IDEAS AND DRAFTS- 2nd Draft :)

This is my second draft! :) 


Topic of investigation: To find out which type of fruit or vegetable juice contains the most amount of electrolytes
Research question: Which type of fruit/vegetable juice contains the most amount of electrolytes?
Hypothesis: Lemon juice contains the most electrolytes
Purpose: Find out the juice with the most electrolytes so that athletes will be able to drink the fruit/vegetable juice with most electrolytes and benefit from consuming the natural components of fruits/vegetable juice instead of consuming chemicals and artificial components present in sports drinks. Fruit/vegetable juice can be a good alternative for them (to substitute sports drinks as excessive consumption of sports drinks may be bad for health in the long term)

Methodology for Second Draft (This is a brief procedure plan-out to aid me in conducting the experiment and is not exactly the same as the one in my report):

Materials:
- Blender to blend ingredients with water
- 1 guava, 1 mango, 1 orange, 1 lemon, 1 apple and 1 carrot-> these are the ingredients
- Knife to peel and slice the ingredients
- Masking tape and pen for labeling
- 100ml measuring cylinder
- Blender to blend the ingredients
- Plastic wrap and rubber bands to seal the mouth of beakers to prevent evaporation
- Datalogger 2.5V voltmeter and copper plates- measure voltage in juices.
- 6 250ml beakers
- Timer to time blending time: 2 minutes

Procedure:
1. Turn on the blender
2. Label each beaker a different juice. For example: "Guava juice, "Apple juice", etc. (Using the pen and the masking tape.
3. Cube the guava with a knife and chopping board and place them in the blender.
4. Measure 100ml of water in 100ml measuring cylinder and pour into blender. Repeat this to ensure 200ml of water will be in the blender.
5. Switch on the blender and blend for 2 minutes. Use a timer to time 2 minutes.
6. After 2 minutes, switch off the blender and pour guava juice into beaker labelled guava juice.
7. Rinse the blender thoroughly
8. Repeat steps 3-7 with the other ingredients but remember to remove the skins for all of them.
9. After pouring the juices into the beakers, seal the mouths with plastic wrap and rubber bands to prevent evaporation.
10. Set up the data logger and voltmeter. Connect the voltmeter to the datalogger.
11. Connect the copper plates to the alligator clips of the voltmeter.
12. Mark areas on the copper plates to indicate the areas of copper plates exposed to the juices when measuring.
13. Remove rubber band and plastic wrap from "Guava Juice" beaker and expose marked areas of copper plates to the guava juice to measure voltage.
14. After data is recorded, remove copper plates and wipe them carefully with clean tissue.
15. Repeat steps 13-14 for each beaker.
16. Record data in table form.




IDEAS AND DRAFTS- Draft 1

This is my first draft for my SIP :) 

Topic of investigation: Effect of pH on the corrosion of copper
Research Question: What is the effect of pH on the corrosion of copper?
Hypothesis: Lower pH, the more the copper corrodes
Purpose: Find the correct pH level of water running in copper pipes so as to prevent corrosion of copper which causes contamination of water, resulting in negative health effects for consumers of contaminated water.

REVIEW OF MY FIRST DRAFT :) 
- Results are too predictable
- Theory behind experiment has been proven many times
-  Conducting the experiment would just be a demonstration of how the theory works
- Not much investigation can be carried out
- Not much discovery because carrying out the experiment would just be a confirmation of the theory: Lower the pH level/ more acidic, more and faster corrosion. Higher acidity, more corrosion.
- Hypothesis is very predictable and the theory was learnt in chemistry lessons, not much investigation and exploration can be done solely based on that experiment
- Problem with the purpose of the experiment- Most suitable pH level of water in copper pipes has already been found out!! -> Water running through copper pipes should be alkaline at pH 7

THUS IDEA IS SCRAPED. :(