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 Heart2h 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

Ionic Bonding

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Ionic Bonding

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Multiple Choice

When the proton number and electron number are unequal, the atom or molecule __________.

forms a covalent bond with another atom

becomes part of a molecule

gains or loses a proton

is an ion

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Verified step by step guidance

Understand that atoms are composed of protons, neutrons, and electrons. Protons have a positive charge, electrons have a negative charge, and neutrons are neutral.

Recognize that the number of protons in an atom's nucleus defines the element and is called the atomic number. In a neutral atom, the number of protons equals the number of electrons.

When the number of electrons does not equal the number of protons, the atom becomes charged. This charged atom is known as an ion.

If an atom has more electrons than protons, it becomes a negatively charged ion, known as an anion. Conversely, if it has fewer electrons than protons, it becomes a positively charged ion, known as a cation.

Therefore, when the proton number and electron number are unequal, the atom or molecule is an ion, which is a fundamental concept in understanding chemical reactions and bonding.