Table of contents

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

Covalent Bonds

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Covalent Bonds

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Multiple Choice

A covalent bond is likely to be polar if __________.

the two atoms sharing electrons are equally electronegative

it is between two atoms that are both very strong electron acceptors

the two atoms sharing electrons are of the same element

one of the atoms sharing electrons is much more electronegative than the other

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Verified step by step guidance

Understand the concept of electronegativity: Electronegativity is a measure of an atom's ability to attract and hold onto electrons. In a covalent bond, atoms share electrons, but the distribution of these electrons can be uneven if one atom is more electronegative than the other.

Identify the characteristics of polar covalent bonds: A polar covalent bond occurs when electrons are shared unequally between two atoms. This happens when one atom is significantly more electronegative than the other, causing a partial charge separation.

Consider the options given: Evaluate each option based on the concept of electronegativity. If the atoms are equally electronegative or of the same element, the bond is likely non-polar. If both atoms are strong electron acceptors, they might not form a covalent bond at all.

Focus on the correct condition for polarity: The correct condition for a polar covalent bond is when one atom is much more electronegative than the other, leading to an unequal sharing of electrons and partial charges on the atoms.

Apply this understanding to predict bond polarity: When analyzing covalent bonds, assess the electronegativity difference between the atoms involved. A significant difference indicates a polar covalent bond, while a small or no difference suggests a non-polar covalent bond.