ATI TEAS 7
Chemistry
1. Balance the following redox reaction in acidic solution: I⻠(aq) + Cr₂O₇²⻠(aq) -> I₂ (aq) + Cr³⺠(aq). Identify the oxidizing agent and reducing agent.
- A. I⻠is oxidized, Cr₂O₇²⻠is reduced
- B. I⻠is reduced, Cr₂O₇²⻠is oxidized.
- C. Both I⻠and Cr₂O₇²⻠are oxidized.
- D. Both I⻠and Cr₂O₇²⻠are reduced.
Correct answer: A
Rationale: . I⻠loses an electron (oxidation), Cr₂O₇²⻠gains electrons (reduction).
2. Which of the following guidelines should be least considered in formulating objectives for
- A. Written nursing care plan
- B. Holistic approach
- C. Prescribed standards
- D. Staff preferences
Correct answer: D
Rationale: When formulating objectives for a written nursing care plan, staff preferences should be least considered. Objectives should be based on patient needs, evidence-based practice, and professional standards rather than personal preferences of the staff. Prescribed standards ensure quality care and adherence to best practices. A holistic approach considers the whole patient, including physical, emotional, and spiritual aspects. Staff preferences may introduce bias and should not dictate patient care objectives.
3. Which type of nuclear force is responsible for holding protons and neutrons together in the nucleus of an atom?
- A. Electromagnetism
- B. Gravity
- C. Strong nuclear force
- D. Weak nuclear force
Correct answer: C
Rationale: The incredibly powerful, strong nuclear force overcomes the repulsive electrostatic force between protons, binding them together and stabilizing the nucleus.
4. Which sentence uses the pronoun "they" correctly?
- A. Her friends told her they liked her new haircut.
- B. Sarah and I, they went to the movies.
- C. They gave the awards to whomever deserved them.
- D. The birds, they were singing in the trees.
Correct answer: A
Rationale: Option A agrees with the closest noun, "friends."
5. What is the name for the process where a solid changes directly into a gas?
- A. Evaporation
- B. Sublimation
- C. Condensation
- D. Melting
Correct answer: B
Rationale: Sublimation occurs when a solid directly transforms into a gas without passing through a liquid phase.
6. What is the primary difference between science and pseudoscience?
- A. Science uses complex terminology and jargon, while pseudoscience is easier to understand.
- B. Science relies on rigorous methodology and evidence, while pseudoscience thrives on personal anecdotes and testimonials.
- C. Science caters to specific fields of study, while pseudoscience encompasses broader life questions.
- D. Science is conducted by professionals, while pseudoscience is pursued by amateurs with limited knowledge.
Correct answer: B
Rationale: Both science and pseudoscience can explore similar topics, but their methods and reliance on evidence differentiate them.
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