HESI A2
Chemistry HESI A2 Quizlet
1. Beta radiation is the product of the decomposition of which particle?
- A. Proton
- B. Neutron
- C. Electron
- D. Photon
Correct answer: B
Rationale: Beta radiation is the result of the decomposition of a neutron. During beta decay, a neutron in an atom's nucleus is transformed into a proton, an electron (beta particle), and an antineutrino. Therefore, the correct answer is 'Neutron.' Choice A, 'Proton,' is incorrect because beta decay does not involve the decomposition of a proton. Choice C, 'Electron,' is incorrect because electrons are actually produced during beta decay. Choice D, 'Photon,' is incorrect as beta radiation does not involve the decomposition of photons.
2. Select the word that makes the following sentence grammatically correct. It is important that one is able to self-motivate and work by ___________.
- A. oneself
- B. oneselves
- C. hisself
- D. themselves
Correct answer: A
Rationale: The word 'oneself' is a reflexive pronoun that refers back to the subject of the sentence, allowing the sentence to be grammatically correct. Options B and C, 'oneselves' and 'hisself,' are not standard English words. Option D, 'themselves,' is a plural pronoun and does not agree with the singular noun 'one' in the sentence.
3. What does 'Occluded' mean?
- A. Open
- B. Closed or obstructed
- C. Partially obstructed
- D. Expanded
Correct answer: B
Rationale: The term 'Occluded' means something is closed or obstructed, not open as in choice A. It is more than just partially obstructed as in choice C. It does not mean expanded as in choice D. Therefore, the correct answer is B, 'Closed or obstructed.'
4. Which word correctly completes the sentence? 'Most children must learn for ___ the importance of good manners.'
- A. Themself
- B. Theirself
- C. Theirselves
- D. Themselves
Correct answer: D
Rationale: 'Themselves' is the correct reflexive pronoun to use when referring to 'children' in the plural form. The other options, 'themself,' 'theirself,' and 'theirselves' are not grammatically correct as they do not match the plural subject 'children.'
5. Select the meaning of the word 'tumult' in the sentence: 'The tumult in the emergency room seemed to last a long time.'
- A. Siren
- B. Distress
- C. Suffering
- D. Commotion
Correct answer: D
Rationale: In this sentence, the word 'tumult' is used to describe a state of confusion, disorder, and chaos in the emergency room. 'Commotion' is the closest synonym to this meaning, making it the correct choice from the list provided. Choice A, 'Siren,' does not capture the meaning of chaos and disorder. Choice B, 'Distress,' refers more to a state of extreme anxiety or suffering rather than the commotion described. Choice C, 'Suffering,' is not the best fit as the word 'tumult' in this context does not specifically imply suffering, but rather a noisy and chaotic situation.
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