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Summer 2025 CHEM 121 WW1 KK
Need Help?
pH of Common Materials
EXPLORATION EXPERIMENTATION EVALUATION
Final Report
Student Name Serafeim Skouras Institution City Colleges of Course Summer 2025 CHEM
Student ID 290780 Chicago - Online 121 WW1 KK
Lesson pH of Common Session 1261_11612 Instructor Sangita Deb
Materials
Closely review your work. You will NOT be able to change your answers in the
experimentation section once you click “Submit Your Data” below.
This Final Report page displays the answers and data you recorded throughout the
lesson. Review the entire page to ensure your work is accurate and nothing is
missing. To finalize the report, click “Submit Your Data” below. Turn in the Final
Report using your instructor’s preferred method.
Exploration
Question 1
Characteristics of bases include _____.
being slippery to the touch
having a bitter taste
a clear color
being slippery to the touch and having a bitter taste
All of the above
FEEDBACK
Impressive! Submit Your Data
, Question 2
Weak bases often feel slippery to the skin because they _____.
coat the skin with their chemical configuration
react with natural substances in the skin to form a protective coating
degrade the fatty acids and oils on the skin
FEEDBACK
Nice!
Question 3
Substances are classified as acids or bases depending on _____.
their color and thickness
how they react with other chemicals
the type of container used to hold them
FEEDBACK
Well done!
Question 4
On the pH scale, 7 represents a neutral substance. As the number of H+ increases in solution, the
pH number _____; as the number of OH- ions increases in solution, the pH number _____.
decreases; increases
increases; decreases
FEEDBACK
Great work!
Question 5
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Help Center (//studenthelp.holscience.com) Logout
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Summer 2025 CHEM 121 WW1 KK
Need Help?
pH of Common Materials
EXPLORATION EXPERIMENTATION EVALUATION
Final Report
Student Name Serafeim Skouras Institution City Colleges of Course Summer 2025 CHEM
Student ID 290780 Chicago - Online 121 WW1 KK
Lesson pH of Common Session 1261_11612 Instructor Sangita Deb
Materials
Closely review your work. You will NOT be able to change your answers in the
experimentation section once you click “Submit Your Data” below.
This Final Report page displays the answers and data you recorded throughout the
lesson. Review the entire page to ensure your work is accurate and nothing is
missing. To finalize the report, click “Submit Your Data” below. Turn in the Final
Report using your instructor’s preferred method.
Exploration
Question 1
Characteristics of bases include _____.
being slippery to the touch
having a bitter taste
a clear color
being slippery to the touch and having a bitter taste
All of the above
FEEDBACK
Impressive! Submit Your Data
, Question 2
Weak bases often feel slippery to the skin because they _____.
coat the skin with their chemical configuration
react with natural substances in the skin to form a protective coating
degrade the fatty acids and oils on the skin
FEEDBACK
Nice!
Question 3
Substances are classified as acids or bases depending on _____.
their color and thickness
how they react with other chemicals
the type of container used to hold them
FEEDBACK
Well done!
Question 4
On the pH scale, 7 represents a neutral substance. As the number of H+ increases in solution, the
pH number _____; as the number of OH- ions increases in solution, the pH number _____.
decreases; increases
increases; decreases
FEEDBACK
Great work!
Question 5
