Monday, February 15, 2016

The Sweet Poison: Planning The Experiment (Lesson 1)

Some Possible Research Questions generated by P5Joyians:
  1. Which drink (milo, green tea, milk and coke) have the greatest mass of sugar? 
  2. Does carbonated drinks contain higher mass of sugar than non-carbonated drinks? 
  3. Is the sugar-less drinks really a healthier choice? 
  4. Which carbonated drink (Coca cola, Root Beer, 7-up and Mountain Dew) has the greatest mass of sugar? 
Possible Methods of Investigation:
  1. Boiling 
  2. Evaporation 
  3. Crystalisation 


Our Research Question:
Which carbonated drink (7-up and Root Beer OR Coca Cola and Mountain Dew) has the greatest mass of sugar?

Independent Variable:
Two different carbonated drinks (7-up and Root Beer OR Coca Cola and Mountain Dew)

Dependent Variable:
Mass of the sugar in 50ml of each of the two drinks

Procedures:
  1. Label, weigh and record individual masses of each of the two beakers. Since the beakers vary in masses, this ensures greater accuracy in data collection. 
  2. Pour 50ml of each of the two drinks into their respective beakers. 
  3. Stir to remove air bubbles. 
  4. Boil the decarbonated drinks until water fully evaporates. Constantly stir the mixture as it boils. 
  5. After water evaporates and thick black residue settles at the base, stop the boiling and let it cool before weighing the residue. 
  6. Record the masses of each beaker for comparison. 
  7. Repeat steps 1 to 6 twice for greater accuracy and reliability. 
  8. Use an average of the readings from the three trials in the analysis. 
Ways to record data:

The Sweet Poison: Homework (Lesson 1)


Visit these three links:

  1. http://www.education.com/science-fair/article/measuring-sugar-in-soda/
  2. https://prezi.com/ubx09blfxtfm/what-soda-has-the-most-sugar/
  3. http://www.ditchthecarbs.com/2015/08/05/sugar-science-fair-project/


Guiding Questions:

  1. Are your investigation procedures similar to the ones found in the three links?
  2. What are some ways to separate sugar from soda?
  3. What is a hydrometer?
  4. Which method do you think is better? Why?
  5. Do you think the three links are helpful to your investigation? In what way(s)?