ATI TEAS 7
Chemistry
1. The element with the atomic number 17 is:
- A. Chlorine (Cl)
- B. Nitrogen (N)
- C. Sodium (Na)
- D. Fluorine (F)
Correct answer: A
Rationale: Chlorine (Cl) - Chlorine has 17 protons, corresponding to atomic number 17.
2. What happens to the density of a gas when its temperature increases at constant pressure?
- A. It increases.
- B. It decreases.
- C. It remains the same.
- D. Information insufficient
Correct answer: B
Rationale: As gas particles gain thermal energy with increasing temperature, they spread out, decreasing the density.
3. There are times when Katherine evaluates her staff as she makes her daily rounds. Which of
- A. The staff member is observed in natural setting.
- B. Incidental confrontation and collaboration is allowed.
- C. The evaluation is focused on objective data systematically.
- D. The evaluation may provide valid information for compilation of a formal report.
Correct answer: A
Rationale: The correct answer is A: 'The staff member is observed in a natural setting.' This option is the most appropriate because it aligns with the concept of naturalistic observation, where behavior is observed in its natural environment without interference or manipulation. In this scenario, Katherine is observing her staff during her daily rounds without any alterations to their behavior or environment. This allows for a more authentic and unbiased assessment of their performance. Options B, C, and D are not as relevant to the concept of naturalistic observation and do not accurately describe the situation presented in the question.
4. Which of the following substances is a common base found in household products?
- A. Sodium chloride (NaCl)
- B. Ammonia (NH₃)
- C. Vinegar
- D. Lemon juice
Correct answer: b
Rationale: Ammonia is a common base found in household products. The other choices are acids.
5. Which of the following terms refers to the degeneration of nerve tissue?
- A. Potentiation
- B. Demyelination
- C. Reuptake
- D. Neurogenesis
Correct answer: B
Rationale: The correct answer is B: 'Demyelination.' Demyelination is the term used to describe the degeneration of the myelin sheath, the protective covering of nerve fibers. This process can lead to impaired nerve signal transmission and potential nerve damage. 'Potentiation' refers to the strengthening of neural connections, 'Reuptake' is the reabsorption of neurotransmitters by the presynaptic neuron, and 'Neurogenesis' is the generation of new nerve cells. In this context, demyelination is the most appropriate term related to nerve tissue degeneration.
6. A car is traveling on a curved road. What force keeps the car moving along the curved path?
- A. Gravitational force
- B. Normal force from the road
- C. Air resistance
- D. Friction between the tires and the road
Correct answer: D
Rationale: In this case, static friction acts between the tires and the road, providing the centripetal force required to keep the car moving in a circle even though it's traveling in a straight line relative to the ground.
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