Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 39m
3. Energy & Cell Processes10h 8m
4. Tissues & Histology10h 3m
5. Integumentary System2h 28m
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 System3h 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

Introduction to Chemical Bonding

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Introduction to Chemical Bonding

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Multiple Choice

The chemical characteristics or reactivity of an element depend mostly on the __________.

number of electron shells present in the atoms

mean energy level of its electrons

degree to which it has more or fewer electrons than protons

number of electrons in its outermost shell

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Verified step by step guidance

Understand that the chemical reactivity of an element is primarily determined by its electrons, specifically those in the outermost shell, also known as valence electrons.

Recall that valence electrons are responsible for forming chemical bonds with other atoms, as they are the electrons involved in interactions.

Consider that elements with a full outer shell of electrons are generally inert or less reactive, such as the noble gases, because they have little tendency to gain or lose electrons.

Recognize that elements with nearly full or nearly empty outer shells are more reactive, as they tend to gain, lose, or share electrons to achieve a stable electron configuration.

Conclude that the number of electrons in the outermost shell is the key factor in determining an element's chemical characteristics and reactivity, as it dictates how the element will interact with others to form compounds.