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Nursing Elites

ATI TEAS 7

Chemistry

1. What is the term for a solution that contains the maximum amount of solute that can dissolve at a specific temperature and pressure?

Correct answer: A

Rationale: A saturated solution is one in which the maximum amount of solute has dissolved under specific conditions. The other choices do not accurately describe a saturated solution.

2. Which word best describes the relationship between population growth and smart cities in the passage?

Correct answer: A

Rationale: The passage identifies rapid population growth as a challenge that smart cities are proposed to address, establishing a causal connection.

3. A temporary loss of consciousness due to insufficient blood flow to the brain is called:

Correct answer: C

Rationale: The correct answer is C: "Syncope (fainting)". Syncope is a temporary loss of consciousness caused by insufficient blood flow to the brain. During syncope, there is a brief interruption in the brain's blood supply, leading to a temporary loss of consciousness and muscle tone. This is different from a stroke (A), which is caused by a blockage or rupture of blood vessels in the brain, resulting in permanent damage. Seizures (B) involve abnormal electrical activity in the brain and can cause a variety of symptoms, including loss of consciousness, but they are not specifically due to insufficient blood flow. Coma (D) is a state of prolonged unconsciousness where a person is unresponsive and cannot be awakened. Therefore, the most appropriate term for a temporary loss of consciousness due to insufficient blood flow to the brain is syncope.

4. How can the periodic table be used to predict the charge of an ion formed by an element?

Correct answer: B

Rationale: Identify the group number, which corresponds to the typical ionic charge. Elements tend to gain or lose electrons to achieve a stable electron configuration like the noble gas group. Their group number often indicates the number of electrons gained/lost and the resulting ionic charge.

5. The energy absorbed during a chemical reaction is called:

Correct answer: D

Rationale: Endothermic means "inward heat," indicating energy is absorbed during the reaction.

6. Which part of the brainstem controls heart rate and breathing?

Correct answer: B

Rationale: The correct answer is B: Pons. The pons is a part of the brainstem located above the medulla oblongata and plays a crucial role in controlling vital functions such as heart rate and breathing. It contains neural circuits that regulate the rhythmic patterns of breathing and works in coordination with the medulla oblongata to ensure proper respiratory function. While the medulla oblongata is also involved in regulating these functions, the pons is more specifically responsible for fine-tuning and coordinating the activity of these essential processes.

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