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Questions and Answers
Which of the following correctly describes the polarity of water molecules?
Which of the following correctly describes the polarity of water molecules?
- The oxygen and hydrogen sides are both slightly positive
- The oxygen side is slightly positive and the hydrogen side is slightly negative (correct)
- The oxygen and hydrogen sides are both slightly negative
- The oxygen side is slightly negative and the hydrogen side is slightly positive
Why does ice float on water?
Why does ice float on water?
- Due to cohesion
- Because water shrinks when it freezes
- Because ice has a higher density than water
- Because water expands and creates air pockets when it freezes (correct)
What is the difference between cohesion and adhesion?
What is the difference between cohesion and adhesion?
- Cohesion is the attraction between molecules of the same substance, while adhesion is the attraction between different substances (correct)
- Cohesion and adhesion are the same thing
- Cohesion is the attraction between different substances, while adhesion is the attraction between molecules of the same substance
- Cohesion and adhesion are both attractions between different substances
If water is added to cooking oil and mixed, will the oil dissolve?
If water is added to cooking oil and mixed, will the oil dissolve?
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If blue litmus paper turned blue and red litmus paper turned blue, what can be concluded about the solution?
If blue litmus paper turned blue and red litmus paper turned blue, what can be concluded about the solution?
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