Objective: To show what’s the percentage of water an orange contains.
Hypothesis: Since there is a lot of liquid juice in an orange, our hypothesis states thatthere will be 50% or more water in an orange.
Materials: 1. An orange
2. Kitchen knife
3. Paper plate4. Aluminum foil
5. Weighing Scale
• Weigh the orange
• Weigh the paper and aluminum foil which is being used to dry the orange in.
• Cut theorange in very thin slices to speed up the drying process.
• Spread the slices over the paper, which is placed on the aluminum foil.
• Keep it in a warm place until it is fully dry. You can expect itto take 4-36 hours depending on the heat and airflow. We used a desk light with a 150 watt lamp and a fan as a drier. We mounted our desk light to be about a foot above the sliced oranges and place thefan about 10 feet away from the orange slices facing the oranges to create airflow. In this way we completed the drying process in 10 hours.
• Weigh the orange slices once fully dried. Don't forgetto deduct the weight of the paper and the aluminum foil if you are weighing the orange slices with the paper and aluminum foil.
Here we show you the procedure with some images:
Weight theorange, paper and aluminum foil separately and together and record the results.
Use a precise scale for more accuracy.
Cut the orange in tin slices and spread them over the paper and aluminumfoil.
Keep the slices in a warm place with enough air flow.
Weight the sample a few times to trace the progress of drying.
Weight the final dry orange slices to calculate the weight losscaused by drying.
Record And Analyze Data:
After the orange slices where completely dry, we put them back on the weighing scale and weighed it with the paper and aluminum foil. We then subtracted...