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1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

2. Cell Chemistry & Cell Components

Properties of Water- Density

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Properties of Water- Density

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Multiple Choice

Which of the following occurs because molecules of water are farther apart in ice than in liquid water?

Ice is denser than liquid water.

Ice expands when it melts.

Ice vaporizes before liquid water does.

Ice floats.

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Verified step by step guidance

Understand the structure of water molecules: In liquid water, molecules are closely packed together, while in ice, they form a crystalline structure that spaces them farther apart.

Recognize the concept of density: Density is defined as mass per unit volume. When molecules are farther apart, the substance has a lower density.

Apply the concept to ice: Because the water molecules in ice are farther apart, ice has a lower density compared to liquid water.

Relate density to buoyancy: Objects with lower density than the fluid they are in will float. Since ice is less dense than liquid water, it will float on water.

Conclude with the correct answer: The phenomenon of ice floating is due to the lower density of ice compared to liquid water, which is a result of the molecular structure of ice.