ATI TEAS 7
Chemistry
1. What is the pH of a solution with a hydrogen ion concentration of \(1 \times 10^{-9}\) M?
- A. 5
- B. 7
- C. 9
- D. 11
Correct answer: c
Rationale: The pH is calculated as the negative logarithm (base 10) of the hydrogen ion concentration. In this case, \(-\log(1 \times 10^{-9}) = 9\).
2. What is the term for a group of organisms living in the same place and interacting with each other?
- A. Ecosystem
- B. Community
- C. Population
- D. Niche
Correct answer: B
Rationale: Rationale: - A) Ecosystem refers to a biological community of interacting organisms and their physical environment. - B) Community specifically refers to a group of organisms of different species living in the same place and interacting with each other. - C) Population refers to a group of individuals of the same species living in the same area. - D) Niche refers to the role or function of an organism or species within an ecosystem. In this context, the term for a group of organisms living in the same place and interacting with each other is best described as a community because it involves multiple species interacting within a shared habitat.
3. What type of sentence is the following: "Wow, what a beautiful sunset!"
- A. Interrogative sentence
- B. Declarative sentence
- C. Exclamatory sentence
- D. Imperative sentence
Correct answer: C
Rationale: The sentence expresses an emotion ("Wow") and makes an exclamation, making it an exclamatory sentence.
4. Define work in physics.
- A. Force applied to an object at rest
- B. Force exerted by an object in motion
- C. Transfer of energy through motion along a direction
- D. Measure of an object's potential energy
Correct answer: c
Rationale: Work in physics is the transfer of energy when a force is applied and the object moves in the direction of the force.
5. Which of the following is TRUE about functional nursing?
- A. Concentrates on tasks and activities
- B. Emphasizes use of group collaboration
- C. One-to-one nurse-patient ratio
- D. Provides continuous, coordinated and comprehensive nursing services
Correct answer: B
Rationale: The correct answer is B: "Emphasizes use of group collaboration." Functional nursing is a task-oriented approach where team members specialize in specific tasks or activities. In this model, nurses work together in groups to provide care to a larger number of patients efficiently. This differs from the one-to-one nurse-patient ratio (C) and the continuous, coordinated, and comprehensive nursing services (D). While functional nursing concentrates on tasks (A), the key feature emphasized in this care delivery model is the use of group collaboration to provide care effectively.
6. The important decision will be made tomorrow. Which word is the comparative form of the adjective "important"?
- A. important
- B. importantly
- C. more important
- D. most important
Correct answer: C
Rationale: The comparative form of an adjective compares two things.
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