Present the sweetest project at the science fair by making chocolate the star of your experiment. Do not wait until the last minute to conduct your science project, as you will still need time to take measurements, create a data table, and graph and draw conclusions from your results. Just because your science project involves chocolate does not mean that you can skip steps in the scientific method. Formulate your hypothesis, identify your variables, conduct the experiment and record the data in a table. Translate the data to a graph and draw conclusions from your findings.
Test whether different types of chocolate melt at different speeds. Does the amount of cocoa in the chocolate bar make a difference? Make a hypothesis then test it through an experiment. Place a white chocolate, milk chocolate, 60 per cent dark chocolate and 75 per cent dark chocolate bars on a baking tray. Place the baking tray in the oven at 93.3 degrees Celsius and watch what happens. Use a timer to determine how quickly the chocolate bars soften and when they melt completely. Show your findings on a bar graph with the type of chocolate on the bottom axis and the time on the vertical axis. Make two different bars for each chocolate type: the softening time and the melted time.
Find out if candy-coated chocolates really do melt in your mouth, but not in your hand. Determine the actual temperature these candies do melt at. Put the chocolate candies in a baking pan with an oven thermometer. Place the pan into a cold oven and turn the oven to 148 degrees C. As the oven heats, the oven thermometer will show the internal temperature. Remove the baking pan from the oven as soon as you see the candies liquefy. Note the temperature on the oven thermometer. Compare this to the temperature of the human body (530 degrees Celsius). Did the candy require a higher or lower temperature to melt? How does this help you to determine if these candies melt in your mouth? Hold a thermometer in your fist to measure the temperature of your hand. How does this temperature compare to the reading the candies melted at in the oven? Draw conclusions from your results.
When chocolate spills on clothing, how do you get the stain out? Research various remedies for cleaning chocolate from clothing. Use an old, clean cotton towel and spread melted chocolate on it in at least four different spots on the towel. Write the name of the remedy under each of the spots on the towel with an indelible fabric marker. Apply three different stain removers to three of the stains and do nothing with the last stain. Try homemade remedies and commercial stain removers on the chocolate stains: club soda, soap or baking soda. Wash the towel and examine the stains after line drying the towel. Record which stains appear to be removed and the stain removal method which seemed to work best. Make a conclusion from your findings. How could your findings help other people?
Chocolate and Mood
Conduct a correlation study to determine if chocolate enhances mood. Find a group of at least 20 volunteers. Break up the 20 into two groups of 10. Show the same sad movie to both groups, but give the volunteers in one group a chocolate bar as they watch the movie. Have the volunteers rank their mood both before and after the movie on a scale of 1 to 10 with 10 being the happiest they have ever been in their life and 1 being the saddest. Did those who ate chocolate and watch the sad movie feel as sad as those in the group without chocolate?