ATI TEAS 7
Chemistry
1. What is the term for a solution that contains less solute than the maximum amount it could dissolve at a specific temperature and pressure?
- A. Saturated solution
- B. Unsaturated solution
- C. Supersaturated solution
- D. Concentrated solution
Correct answer: b
Rationale: An unsaturated solution is one in which less solute has dissolved than the maximum amount it could dissolve under specific conditions. The other choices do not accurately describe an unsaturated solution.
2. The human body's largest organ, responsible for detoxification and a multitude of other functions, is the:
- A. Heart
- B. Liver
- C. Lungs
- D. Skin
Correct answer: B
Rationale: The correct answer is B: Liver. The liver is the largest internal organ in the human body and is responsible for detoxification, processing nutrients, producing bile, and regulating blood sugar levels, among other functions. While the heart is vital for pumping blood, the lungs are crucial for respiration, and the skin is the body's largest external organ, the liver plays a central role in detoxification and various metabolic processes, making it the correct answer to this question.
3. He discusses the goal of the department. Which of the following statements is a goal?
- A. Increase the patient satisfaction rate
- B. Eliminate the incidence of delayed administration of medications
- C. Establish rapport with patients.
- D. Reduce response time to two minutes.
Correct answer: A
Rationale: Option A, 'Increase the patient satisfaction rate,' is a goal because it represents an objective that the department aims to achieve. Patient satisfaction is a key indicator of quality care and reflects the department's commitment to providing excellent service. In contrast, options B, C, and D are more focused on specific actions or strategies rather than overarching goals. Eliminating delayed medication administration, establishing rapport with patients, and reducing response time are important tasks that may contribute to achieving the goal of increasing patient satisfaction, but they are not goals in themselves. Therefore, option A is the most appropriate choice as it directly addresses the department's ultimate objective of enhancing patient satisfaction.
4. The unit for measuring luminous flux, which describes the perceived brightness of a light source by the human eye, is:
- A. Candela
- B. Lumen
- C. Lux
- D. Hertz
Correct answer: A
Rationale: The correct answer is B: Lumen. Luminous flux is the measure of the total quantity of visible light emitted by a source per unit time, measured in lumens. The candela (A) is the unit for luminous intensity, lux (C) is the unit for illuminance (luminous flux per unit area), and Hertz (D) is the unit for frequency. Therefore, in this question, the unit for measuring luminous flux is the lumen, as it specifically quantifies the perceived brightness of a light source by the human eye.
5. Which of the following describes a scalar quantity?
- A. Velocity
- B. Acceleration
- C. Force
- D. Speed
Correct answer: d
Rationale: Speed is a scalar quantity as it only indicates how fast an object is moving without any directional information.
6. What is the general formula for an alkene?
- A. CnH2n+2
- B. CnH2n
- C. CnH2n-2
- D. CnH2n+1
Correct answer: B
Rationale: The general formula for an alkene is \(C_nH_{2n}\), indicating the presence of a double bond between carbon atoms.
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