ATI TEAS 7
Chemistry
1. The process by which a solid changes directly into a liquid is called:
- A. Melting
- B. Condensation
- C. Sublimation
- D. Deposition
Correct answer: D
Rationale: While melting is a solid to liquid transition, deposition, also known as sublimation, refers to a gas directly changing into a solid.
2. The constituents of an atomic nucleus consist of:
- A. Electrons and protons only
- B. Protons and neutrons only
- C. Electrons, protons, and neutrons
- D. None of the above
Correct answer: B
Rationale: The correct answer is B: "Protons and neutrons only." This is because the atomic nucleus is composed of protons, which carry a positive charge, and neutrons, which are neutral. Electrons are found outside the nucleus in electron shells. Protons and neutrons are collectively known as nucleons and are responsible for the mass of the atom. Electrons are much lighter and are involved in chemical reactions and bonding. Therefore, the constituents of an atomic nucleus are specifically protons and neutrons, making option B the correct choice.
3. She surfs the internet for more information about leadership styles. She reads about shared
- A. Leadership behavior is generally determined by the relationship between the leader’s
- B. Leaders believe that people are basically good and need not be closely controlled
- C. Leaders rely heavily on visioning and inspire members to achieve results
- D. Leadership is shared at the point of care.
Correct answer: B
Rationale: The correct answer is B because the statement 'Leaders believe that people are basically good and need not be closely controlled' aligns with the concept of shared leadership. Shared leadership involves distributing leadership responsibilities and authority among team members based on the belief that everyone has valuable contributions to make. This approach fosters a sense of trust and empowerment within the team, allowing individuals to take initiative and collaborate effectively. In contrast, option A refers to leadership behavior being determined by the relationship between the leader and followers, which is not directly related to the concept of shared leadership. Option C emphasizes visioning and inspiration, which are important aspects of leadership but do not specifically address the shared nature of leadership. Option D mentions leadership being shared at the point of care, which is too specific and does not encompass the broader concept of shared leadership.
4. Which word is misspelled?
- A. accommodate
- B. acquiesce
- C. circumstance
- D. indelible
Correct answer: D
Rationale: "Indelible" is spelled correctly, while "circumstance" should be "circumstance."
5. Which of the following is an example of a chemical property of matter?
- A. Boiling point
- B. Flammability
- C. Density
- D. Conductivity
Correct answer: b
Rationale: Chemical properties describe how a substance reacts with other substances, such as its ability to burn (flammability) or react with acids or bases.
6. A decorative globe has a diameter of 25cm. What is its total surface area?
- A. 1570 sq cm
- B. 1963 sq cm
- C. 2513 sq cm
- D. 3142 sq cm
Correct answer: B
Rationale: Use the formula for surface area of a sphere: 4 * À * (radius)^2, where radius is half the diameter. Calculate the radius (12.5cm) and substitute: 4 * À * (12.5cm)^2 ≈ 1963 sq cm.
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