ATI TEAS 7
Chemistry
1. Which of the following is an example of a salt?
- A. Sodium hydroxide (NaOH)
- B. Hydrochloric acid (HCl)
- C. Sodium chloride (NaCl)
- D. Sulfuric acid (Hâ‚‚SOâ‚„)
Correct answer: c
Rationale: Sodium chloride is an example of a salt. The other choices are either bases or acids.
2. What scientific term encompasses a permanent alteration in the DNA sequence?
- A. Trait
- B. Mutation
- C. Allele
- D. Variation
Correct answer: B
Rationale: Rationale: A) Trait: A trait is a characteristic or feature of an organism that is determined by its genes. B) Mutation: A mutation is a permanent alteration in the DNA sequence that can result from errors during DNA replication, exposure to mutagens, or other factors. C) Allele: An allele is a variant form of a gene that can result in different traits or characteristics. D) Variation: Variation refers to the differences in traits or characteristics among individuals of the same species, which can be influenced by genetic and environmental factors. In this context, the term that specifically refers to a permanent alteration in the DNA sequence is "mutation."
3. How does an unbalanced force affect an object at rest?
- A. It maintains the object's state of rest
- B. It does not affect the object's rest
- C. It moves the object into motion
- D. It decreases the object's mass
Correct answer: c
Rationale: An unbalanced force acting on an object at rest causes it to start moving.
4. What is the unit of measurement for force in the International System of Units (SI)?
- A. Newton (N)
- B. Kilogram (kg)
- C. Joule (J)
- D. Meter per second squared (m/s²)
Correct answer: a
Rationale: Force is measured in Newtons (N) in the SI system.
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. When water boils, it changes from a liquid to a gas. This is an example of a:
- A. Chemical reaction
- B. Physical change
- C. Nuclear reaction
- D. Biological process
Correct answer: B
Rationale: Physical change - Boiling water involves a change in state, not the chemical composition of the molecules. Chemical reactions involve breaking and forming new bonds, which is not the case here.
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