ATI TEAS 7
Chemistry
1. Which of the following statements is true regarding a supersaturated solution?
- A. It is unstable and tends to crystallize
- B. It contains less solute than it could dissolve
- C. It has a lower concentration than a saturated solution
- D. It is rarely encountered in everyday solutions
Correct answer: a
Rationale: Supersaturated solutions are unstable and tend to crystallize if disturbed. The other choices do not accurately describe supersaturated solutions.
2. The primary function of the respiratory system is to:
- A. Maintain body temperature
- B. Deliver oxygen to the bloodstream and remove carbon dioxide
- C. Produce antibodies for the immune system
- D. Break down food molecules for energy
Correct answer: B
Rationale: The correct answer is B: 'Deliver oxygen to the bloodstream and remove carbon dioxide.' The primary function of the respiratory system is to facilitate gas exchange. When we breathe in, oxygen is inhaled and transported to the bloodstream, where it is delivered to cells for energy production. Simultaneously, carbon dioxide, a waste product of cellular metabolism, is removed from the bloodstream and exhaled. This process is vital for sustaining life and maintaining proper oxygen levels in the body. The respiratory system does not primarily regulate body temperature, produce antibodies, or break down food molecules for energy, making options A, C, and D incorrect.
3. What is the term for a solution that contains the maximum amount of solute that can dissolve at a specific temperature and pressure?
- A. Saturated solution
- B. Unsaturated solution
- C. Dilute solution
- D. Concentrated solution
Correct answer: A
Rationale: A saturated solution is one in which the maximum amount of solute has dissolved under specific conditions. The other choices do not accurately describe a saturated solution.
4. Why are isotopes of the same element chemically similar?
- A. They have the same number of protons.
- B. They have the same number of electrons.
- C. Their chemical properties are identical.
- D. They share the same electron configuration.
Correct answer: A
Rationale: They have the same number of protons. This determines the element's identity and its interactions with other elements, leading to similar chemical behavior, even if the number of neutrons differs.
5. What effect does doubling the net force applied to an object have on its acceleration, assuming mass remains constant?
- A. Acceleration doubles
- B. Acceleration is halved
- C. Acceleration remains the same
- D. Acceleration quadruples
Correct answer: a
Rationale: According to Newton's second law (F = ma), if mass remains constant and force doubles, acceleration also doubles.
6. As a young manager, she knows that conflict occurs in any organization. Which of the
- A. Can be destructive if the level is too high
- B. Is not beneficial; hence it should be prevented at all times
- C. May result in poor performance
- D.
Correct answer: C
Rationale: Conflict in an organization is a natural occurrence that can either be constructive or destructive. Option C is the correct answer because conflict may indeed lead to poor performance if not managed effectively. When conflict is left unresolved or unaddressed, it can create tension, decrease morale, and hinder productivity. By recognizing that conflict can impact performance, the young manager can take proactive steps to address and resolve conflicts in a constructive manner to minimize its negative effects and promote a healthy work environment.
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