QQuestionBiology
QuestionBiology
"The attractive force that occurs between water molecules is called ______________; the attractive force between water and other substances is called _____________.
A. cohesion; adhesion
B. adhesion; cohesion
C. adhesion; hydrogen bonding"
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Answer
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Step 1:Let me solve this problem step by step:
Step 2:: Understand the key terms
- Cohesion refers to the attraction between molecules of the SAME substance - Adhesion refers to the attraction between molecules of DIFFERENT substances
Step 3:: Analyze the given options
A. cohesion; adhesion ✓ B. adhesion; cohesion ✗ C. adhesion; hydrogen bonding ✗
Step 4:: Explain the reasoning
- In water molecules, the hydrogen bonding between water molecules is called cohesion - When water molecules stick to other substances (like glass or plant cells), this is called adhesion
Step 5:: Verify the scientific definitions
- Cohesion allows water to form droplets and create surface tension - Adhesion allows water to climb up narrow tubes (like in plant stems) or stick to other surfaces
Final Answer
The correct answer is A, which correctly identifies cohesion as the attraction between water molecules and adhesion as the attraction between water and other substances.
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