Atoms and Molecules
Purpose: The purpose of this lab was to determine if a certain type of a solution was an acid or a base, to test the ph level of a solution, and to test chemical reactants.
Acids: Molecules that release hydrogen ions when dissolved in water.
Bases: Substances that remove hydrogen ions from solutions.
Chemical reactions: Occurs when atoms or molecules react with one another in
such a way that chemical bonds are broken and new molecular combinations are made as new bonds are formed.
Observation: Firstly, we dipped pHydrion paper in each solution using a
pair of forceps and once we got the results we recorded the number of the pH
that it changed to. Then we used each of the solutions that was used before and
put 5 drops of each in a test tube. In each of those test tubes we mixed 2 drops
of Bromthymol Blue in each and recorded the color change of each. To get the
accurate numbers of all the solutions pH levels above, we used the pH meter. The
last part of the lab was to test the pH levels of apple juice, soda, soap, and
bleach.
Materials Used:
Test tube
Beaker
pHydrion paper
pH Meter
Bromthymol blue indicator solution
Phenolphthalein indicator solution
Apple Juice
Soda
Soap
Bleach
Forceps
Purpose: The purpose of this lab was to determine if a certain type of a solution was an acid or a base, to test the ph level of a solution, and to test chemical reactants.
Acids: Molecules that release hydrogen ions when dissolved in water.
Bases: Substances that remove hydrogen ions from solutions.
Chemical reactions: Occurs when atoms or molecules react with one another in
such a way that chemical bonds are broken and new molecular combinations are made as new bonds are formed.
Observation: Firstly, we dipped pHydrion paper in each solution using a
pair of forceps and once we got the results we recorded the number of the pH
that it changed to. Then we used each of the solutions that was used before and
put 5 drops of each in a test tube. In each of those test tubes we mixed 2 drops
of Bromthymol Blue in each and recorded the color change of each. To get the
accurate numbers of all the solutions pH levels above, we used the pH meter. The
last part of the lab was to test the pH levels of apple juice, soda, soap, and
bleach.
Materials Used:
Test tube
Beaker
pHydrion paper
pH Meter
Bromthymol blue indicator solution
Phenolphthalein indicator solution
Apple Juice
Soda
Soap
Bleach
Forceps
-
Conclusion: After we completed this lab we realized that Apple Juice and Soda were considered as
acids because the pH level was low. On the other hand, bleach and soap are bases
because the ph level was high. Also when you add Bromthymol blue to an acid, it
changes color, but if you were to add it to a base it does not
change.
Click on the file below to see table results!!
atoms_and_molecules.docx | |
File Size: | 1156 kb |
File Type: | docx |