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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 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

Copper has an atomic number of 29 and a mass number of 64. What would result if an uncharged copper atom lost two electrons?

The atom would have a double negative charge and be an ion.

The atomic number of the atom would remain 29, the mass number would be reduced to 62, and the atom would be an anion.

The atomic number would be reduced to 27, the mass number would remain 64, and the atom would be an anion with a +2 charge.

The atomic number would remain 29, the mass number would remain 64, and the atom would be a cation with a +2 charge.

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Verified step by step guidance

Understand the basic properties of an atom: The atomic number represents the number of protons in the nucleus, and the mass number is the sum of protons and neutrons.

Recognize that electrons are negatively charged particles orbiting the nucleus. Losing electrons affects the charge but not the atomic or mass numbers.

Identify that losing two electrons results in a positive charge because electrons are negatively charged. Thus, losing them makes the atom more positive.

Determine that the atomic number remains unchanged because it is defined by the number of protons, which does not change when electrons are lost.

Conclude that the mass number remains unchanged as well, since it is the sum of protons and neutrons, and losing electrons does not affect this sum. The atom becomes a cation with a +2 charge.