ATI TEAS 7
Chemistry
1. What is the formula for calculating molarity?
- A. M = n/V
- B. M = n/L
- C. M = mol/L
- D. M = mol/dm³
Correct answer: a
Rationale: All of these choices are equivalent to the original formula. The symbol "n" represents the number of moles of solute, and the symbol "V" represents the volume of the solution in liters. The symbol "L" is an abbreviation for "liters," and "dm³" is an alternative way to represent liters.
2. The final sentence suggests that the debate surrounding UBI necessitates
- A. Focusing on the potential cost savings for governments compared to existing welfare programs.
- B. Prioritizing the opinions of economists and financial experts over those of social scientists and philosophers.
- C. Engaging in thoughtful and informed discussions considering both the economic and ethical implications.
- D. Dismissing the concerns of critics and implementing UBI as a rapid solution to poverty and inequality.
Correct answer: C
Rationale: The emphasis on "complex interplay" and "careful consideration" suggests a call for nuanced and multifaceted discussions, aligning with C.
3. What property of matter remains constant regardless of changes in gravity?
- A. Mass
- B. Weight
- C. Volume
- D. Density
Correct answer: a
Rationale: Mass is the measure of the amount of matter in an object and remains constant regardless of changes in gravity or location. It is an intrinsic property of matter.
4. She wants to ensure that every task is carried out as planned. Which of the following tasks is
- A. Instructing the members of the standards committee to prepare policies
- B. Reviewing the existing policies of the hospital
- C. Evaluating the credentials of all nursing staff
- D. Checking if activities conform to schedule
Correct answer: C
Rationale: The correct answer is C because evaluating the credentials of all nursing staff is essential to ensuring that the right individuals are in place to carry out tasks effectively. This task directly contributes to maintaining a high standard of performance and ensuring that the team is qualified for their roles. In contrast, the other options focus on policies, reviews, and schedules, which are important but do not directly address the qualifications and capabilities of the staff responsible for task execution.
5. Neon (Ne). Both He and Ne belong to Group 18 (Noble Gases) due to their complete and stable outer electron shells.
- A. Electromagnetism
- B. Gravity
- C. Strong nuclear force
- D. Weak nuclear force
Correct answer: C
Rationale: Strong nuclear force. This incredibly powerful force overcomes the repulsive electrostatic force between protons and binds the nucleus together.
6. Which element is present in household bleach and has disinfectant properties?
- A. Sodium
- B. Chlorine
- C. Fluorine
- D. Iodine
Correct answer: B
Rationale: Chlorine's oxidizing ability makes it effective in killing bacteria and other microorganisms.
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