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Nursing Elites

ATI TEAS 7

Chemistry

1. Which of the following is an example of a salt?

Correct answer: c

Rationale: Sodium chloride is an example of a salt. The other choices are either bases or acids.

2. Which element is used in fire extinguishers to smother flames by displacing oxygen?

Correct answer: B

Rationale: Carbon dioxide extinguishes flames by depriving them of oxygen, preventing the chemical reaction that sustains the fire.

3. The spleen, an organ associated with the lymphatic system, plays a crucial role in:

Correct answer: B

Rationale: The correct answer is B: 'Filtering blood and destroying old red blood cells.' The spleen is part of the lymphatic system and acts as a blood filter, removing old or damaged red blood cells and helping to fight infections. It does not play a role in regulating blood sugar levels (A), producing digestive enzymes (C), or secreting hormones (D). Understanding the function of the spleen in filtering blood and removing old red blood cells is crucial for grasping its role in maintaining overall health and immunity.

4. Identify the compound-complex sentence in the following options:

Correct answer: D

Rationale: A compound-complex sentence contains at least two independent clauses and at least one dependent clause.

5. Which element is used in fluorescent lamps and emits ultraviolet light when excited?

Correct answer: A

Rationale: Mercury vapor in fluorescent lamps generates UV light that excites phosphors on the lamp's inner surface, producing visible light.

6. Which type of energy is associated with the random motion of particles in a substance?

Correct answer: c

Rationale: Thermal energy is related to the random motion of particles in a substance and is associated with temperature.

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