Explain the science concepts involved in this fruit/baking soda lab. Also, what important chemical principle is used.
I did a lab with this purpose: In this laboratory exercise, you will perform an experiment to determine if a substance is an acid.
Here's the procedure:
- Organize your materials. If you prepare the samples yourself, be sure to wash your hands with soap and water after handling each sample. Also wash any tools that you use to prepare your samples after contact with each sample.
- Construct a data table to record your observations.
- Place a small piece of each of the 5 food samples you have selected on your paper plate. Be sure they are spread far apart and the samples do not touch.
- Use the spoon to sprinkle a very small amount of baking soda onto each sample. Record your observations in your data table.
- Repeat steps 3 and 4 on a new plate and note any differences.
- Place a small piece of the chalk into the jar containing the vinegar sample.
- Record your observations in your data table.
I am being asked to explain the science concepts involved in this lab. Also, what important chemical principle is used.
You are using the scientific method to create this experiment. The scientific method is used to help scientists a fair experiment to test their question. The scientific method starts with a question. Then, from the question, scientists formulate a hypothesis or a guess about the results of the experiment. Using the question and the hypothesis, scientists create an experiment using variables (independent, dependent, and controls) to test their hypothesis. Your procedure takes into account of a number of variables. In order for you to conduct a fair test, each variable must not be changed or altered during the experiment. This is why you have to prevent contamination by washing your hands after handling each sample and keep the samples separate. Contamination can alter your results giving you a false positive or negative. Your observations are apart of your data collection. These results are used to either prove or disprove your original hypothesis. You analyze these results in the conclusion of your experiment.