IDENTIFYING AND ANALYZING POWDERS LAB
In this lab, we took four powders, baking soda, cornstarch, alka-seltzer, and table salt, and three liquid reagents, white vinegar, tinctured iodine, and water, and observed what the outcome would be when we mixed each of the different liquids with the different powders. Then we used our worksheet where we wrote down any changes that we observed when we mixed the different substances to identify what the three unknown powders were by comparing the effects. The purpose of this lab was to teach us how to use observed both physical and chemical properties and to learn how to identify different substances using our observations. From this lab I learned how the different powders react to different liquids. I also learned how ho properly differentiate known and unknown substances by their common properties.
The purpose of this lab was to allow us to practice our skill of using physical properties to classify or identify different substances before and after they experience a chemical change. We learned how to analyze and identify certain kinds of chemical changes that occur when substances are combined. We also started to get into the practice of finding out what substances are mixed together to make different substances by looking at their physical and chemical changes.
From this lab I learned that knowing how to identify a substance by just using physical properties is very important when dealing with chemicals and unknown substances; mainly because you can find out so much about a substance without having to chemically alter it. I also learned how the changes in states of matter can help identify the chemical changes that occur in any altered substance.
From this lab I learned that knowing how to identify a substance by just using physical properties is very important when dealing with chemicals and unknown substances; mainly because you can find out so much about a substance without having to chemically alter it. I also learned how the changes in states of matter can help identify the chemical changes that occur in any altered substance.