HESI A2
HESI A2 Math Practice Exam
1. What is the boiling point of water in degrees Fahrenheit?
- A. 100°F
- B. 200°F
- C. 212°F
- D. 250°F
Correct answer: C
Rationale: The correct answer is C: '212°F.' The boiling point of water at standard atmospheric pressure is 212°F. This is the temperature at which water transitions from a liquid to a gas phase, known as boiling. It is a fundamental property of water and a crucial point to remember for various applications in science and everyday life. Choice A (100°F) is the boiling point of water in degrees Celsius, not Fahrenheit. Choice B (200°F) and Choice D (250°F) are not correct boiling points for water at standard atmospheric pressure.
2. What is another word for flux?
- A. Flowing
- B. Restriction
- C. Absorption
- D. Discharge
Correct answer: D
Rationale: Flux is a term used to describe a discharge, which refers to the action of discharging or releasing something. In medical contexts, flux can specifically refer to a discharge of bodily fluids or matter. 'Flowing' (Choice A) is not a synonym of flux; it implies continuous movement rather than discharge. 'Restriction' (Choice B) and 'Absorption' (Choice C) are unrelated to the concept of flux and do not convey the same meaning.
3. What charge do Group IA elements have?
- A. +1
- B. +2
- C. +3
- D. 0
Correct answer: A
Rationale: Group IA elements, also known as alkali metals, have a +1 charge. They readily lose one electron to achieve a stable electron configuration, forming ions with a single positive charge. This makes +1 the correct choice. Choices B, C, and D are incorrect because alkali metals in Group IA typically lose one electron, so they do not have a +2, +3, or 0 charge.
4. Select the correct word for the blank in the sentence: 'After completing the intense surgery, Dr. Capra needed a long ____.'
- A. brake
- B. break
- C. brink
- D. broke
Correct answer: B
Rationale: The correct word to fill in the blank is 'break.' In this context, 'break' refers to a pause or rest, which is what Dr. Capra needed after completing the intense surgery. 'Brake' (choice A) refers to a device used to slow or stop a vehicle. 'Brink' (choice C) means the edge or verge of something. 'Broke' (choice D) is the past tense of 'break' and is grammatically incorrect in this sentence.
5. What is the meaning of the word 'shifts' as used in the third paragraph?
- A. Alterations
- B. Stints
- C. Removals
- D. Transfers
Correct answer: A
Rationale: In this context, 'shifts' refers to changes or alterations in brain chemistry and electrophysiology. The word 'alterations' best captures the idea that significant changes are occurring in the brain. 'Stints' (choice B) refer to short periods of time or work, which is not the meaning intended here. 'Removals' (choice C) and 'transfers' (choice D) do not fit the context of the sentence and are not related to the changes happening in the brain as described in the extract.
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