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Nursing Elites

ATI TEAS 7

Chemistry

1. What is the primary difference between ionic and metallic bonding?

Correct answer: B

Rationale: Ionic bonds form discrete molecules, while metallic bonds form extended structures. Ionic bonds involve complete electron transfer between specific atoms, resulting in discrete molecules. Metallic bonds involve a "sea" of delocalized electrons shared across all metal atoms, leading to strong, non-directional bonding throughout the entire material.

2. When proofreading your writing, focus on:

Correct answer: C

Rationale: Proofreading involves correcting errors, refining sentence structure, and ensuring the writing achieves its purpose, clarity, and consistency.

3. Which of the following factors does NOT affect the rate of dissolution of a solute in a solvent?

Correct answer: B

Rationale: Pressure does not affect the rate of dissolution of a solute in a solvent. The factors that do affect the rate of dissolution include temperature, surface area, and particle size. Temperature generally increases the rate of dissolution as it provides more energy for the solute particles to break apart and mix with the solvent. Increasing the surface area of the solute by grinding it into smaller particles or increasing its contact area with the solvent can also speed up dissolution. Similarly, reducing the particle size of the solute can increase the rate of dissolution by providing more surface area for interaction with the solvent.

4. The final sentence highlights the need for

Correct answer: C

Rationale: The emphasis on "international cooperation," "robust scientific research," and "adapting" suggests a focus on collaborative and multi-faceted solutions, aligning with C.

5. Which of the following is a pair of nerves that originates from the brain?

Correct answer: B

Rationale: The correct answer is B, Olfactory nerves, because they are a pair of cranial nerves that originate from the brain and are responsible for the sense of smell. Spinal nerves (option A) originate from the spinal cord, not the brain. The sciatic nerve (option C) is a large nerve that runs from the lower back down the back of each leg and also originates from the spinal cord, not the brain. The optic nerve (option D) is a cranial nerve that connects the eye to the brain, but it is not a pair of nerves that originates from the brain. Therefore, the olfactory nerves are the only pair of nerves listed that specifically originate from the brain.

6. An ancient Egyptian pyramid has a square base with side lengths of 20 meters and a remaining height (after erosion) of 10 meters. Its original height was 30 meters. What was the volume of the pyramid in its original state?

Correct answer: A

Rationale: Use the formula for the volume of a pyramid with the original height and base area.

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