Okay, everyone. A base has what characteristics? Remember that Jason taught us that bases are going to have a higher pH, which is 7 and above, and they are going to lower the hydrogen ion concentration of a solution. Now, let's have a look at our answer choices. A base has a value of 7 on the pH scale. No. This is going to be a solution that is technically a neutral solution. So it's not what we're looking for. A base is a chemical that donates hydrogen ions to solution. Remember, this is an acid. This is the exact opposite of a base. Not what we're looking for. A base is a chemical that accepts hydrogen ions from solution. Now, this one's a little bit tricky, but this statement is actually true because a base accepting hydrogen ions from a solution actually does what? Decreases the hydrogen ion concentration in that solution. So that answer is in fact correct. Let's make sure these other answers are incorrect. Answer choice d says, a base has a value below 7 on the pH scale. Again, remember that this is an acid solution if it's below 7 on the pH. So, in fact, the correct answer to this question is answer choice C. Okay, everyone. Let's move on to our next video.

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
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9. Muscle Tissue2h 33m
10. Muscles1h 11m
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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
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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

pH Scale

Anatomy & Physiology

2. Cell Chemistry & Cell Components

pH Scale

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Multiple Choice

A base _______:

Has a value of 7 on the pH scale.

Is a chemical that donates hydrogen ions to a solution.

Is a chemical that accepts hydrogen ions from a solution.

Has a value below 7 on the pH scale.

None of the above are correct.

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Verified step by step guidance

Understand the pH scale: The pH scale ranges from 0 to 14, where 7 is neutral. Values below 7 indicate acidity, and values above 7 indicate alkalinity (basicity).

Identify the characteristics of a base: A base is a substance that can accept hydrogen ions (H+) from a solution, which typically results in a higher pH value, above 7.

Evaluate the given options: Analyze each statement to determine if it aligns with the characteristics of a base.

Option analysis: 'Has a value of 7 on the pH scale' is incorrect because a pH of 7 is neutral, not basic.

Option analysis: 'Is a chemical that accepts hydrogen ions from a solution' is correct because it matches the definition of a base, which accepts H+ ions.