Science, Tech, Math › Science Experiment to See How Much Sugar Is in a Soda Share Flipboard Email Print Science Activities for Every Subject Introduction Weather Make a Storm Glass to Predict the Weather Make a Simple Weather Barometer Make Real Snow Make a Cloud in a Bottle Determine Why the Sky Is Blue Food and Cooking Determine Vitamin C by Iodine Titration Make Biodiesel From Vegetable Oil Test for Protein in Food Experiment With Fruit Ripening and Ethylene See How Much Sugar Is in Soda Fire and Smoke Make Colored Fire Make a Smoke Bomb Make Chemical Fire Perform Magic Tricks With Fire Make a Sparkler Bubbles Make Bubbles That Don't Pop Make Glowing Bubbles Make a Giant Bubble Using Dry Ice Make a Bubble Rainbow Crystals Grow Bismuth Crystals Grow a Big Alum Crustal Grow a Borax Crystal Snowflake Grow Copper Sulfate Crystals Grow Table Salt or Sodium Chloride Crystals Chemical Reactions Build a Baking Soda Volcano Make Sulfuric Acid at Home Make Homemade Dry Ice Make Hydrogen Gas Make "Elephant Toothpaste" Caspar Benson / Getty Images By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated January 16, 2019 You know regular soft drinks supposedly contain a lot of sugar. Most of the sugar takes the form of sucrose (table sugar) or fructose. You can read the side of a can or bottle and see how many grams there are, but do you have any sense of how much that is? How much sugar do you think is in a soft drink? Here's a simple science experiment to see how much sugar there is and learn about density. Materials Not to ruin the experiment for you, but your data will be more interesting if you compare different types of soft drinks rather than different brands of the same thing (e.g., three types of cola). This is because the formulations from one brand to another vary only slightly. Just because a drink tastes sweet might not mean it contains the most sugar. Let's find out. Here's what you need: 3 soft drinks (e.g., cola, citrus, other fruit like orange or grape)SugarWaterGraduated cylinder or measuring cup for small volumesSmall cups or beakers Form a Hypothesis It's an experiment, so use the scientific method. You already have background research into sodas. You know how they taste and may even have a sense of which tastes like it contains more sugar than another. So, make a prediction. How much sugar do you think is in a soft drink?Do you think colas, citrus drinks, or other soft drinks contain the most sugar?Out of a group of soft drinks, which one do you think contains the most sugar? the least? Experimental Procedure Taste the soft drinks. Write down how sweet they taste, compared with each other. Ideally, you want flat (uncarbonated) soda, so you can either let the soda sit out on the counter or stir it up to force most of the bubbles out of solution.Read the label for each soda. It will give the mass of sugar, in grams, and the volume of the soda, in milliliters. Calculate the density of the soda but dividing the mass of sugar by the volume of soda. Record the values.Weigh six small beakers. Record the mass of each beaker. You will use the first 3 beakers to make pure sugar solutions and the other 3 beakers to test the sodas. If you are using a different number of soda samples, adjust the number of beakers accordingly.In one of the small beakers, add 5 ml (milliliters) of sugar. Add water to get 50 ml of total volume. Stir to dissolve the sugar.Weigh the beaker with sugar and water. Subtract the weight of the beaker by itself. Record this measurement. It is the combined mass of the sugar and water.Determine the density of your sugar-water solution: (density calculations)density = mass / volumedensity = (your calculated mass) / 50 mlRecord the density for this amount of sugar in water (grams per milliliter).Repeat steps 4-7 for 10 ml of sugar with water added to make 50 ml solution (about 40 ml) and again using 15 ml of sugar and water to make 50 ml (about 35 ml of water).Make a graph showing the density of the solution versus the amount of sugar.Label each of the remaining beakers with the name of the soda to be tested. Add 50 ml of flat soda to the labeled beaker.Weigh the beaker and subtract the dry weight from step 3 to get the mass of the soda.Calculate the density of each soda by dividing the mass of soda by the 50 ml volume.Use the graph you drew to figure out how much sugar is in each soda. Review Your Results The numbers you recorded were your data. The graph represents the results of your experiment. Compare the results in the graph with your predictions about which soft drink had the most sugar. Were you surprised? Questions To Consider How many sodas do you drink in a day? How much sugar is that?How does soda impact your teeth? (Test this further using an egg.)In what way, if any, do you think the results would have been different if you had used a freshly opened soda, with lots of carbonation?Would the results have been different if you dissolved the sugar in the first three beakers in carbonated water rather than regular water?A sugar cube weighs about 4 grams. How many sugar cubes would it take, for each soda, to reach the mass of sugar stated on the container?