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. Which additional information would be MOST relevant to the topic of the passage?
- A. A detailed history of the development of specific social media platforms.
- B. Studies on the psychological effects of prolonged social media use on teenagers.
- C. Statistics on the global economic impact of the social media industry.
- D. Technical explanations of the algorithms used by social media platforms.
Correct answer: B
Rationale: Studies on the psychological effects of social media use directly relate to the passage's concerns about mental health impacts, making it the most relevant information.
3. Which sentence uses the possessive apostrophe correctly?
- A. The cats meows filled the room.
- B. I visited my friends' house.
- C. She borrowed Johns book.
- D. The childrens toys were scattered everywhere.
Correct answer: B
Rationale: Option b adds the apostrophe and "s" to show ownership of multiple friends.
4. Which sentence uses the present perfect continuous tense correctly?
- A. I have been working on this project since morning.
- B. She has finished the book already.
- C. They will be leaving for vacation tomorrow.
- D. He had been living in the city for ten years.
Correct answer: A
Rationale: Option A emphasizes the ongoing action (working) that started in the past and continues to the present.
5. What is the Aufbau principle?
- A. The principle that electrons fill orbitals in order of increasing energy.
- B. The principle that electrons cannot be in the same orbital with the same spin.
- C. The principle that the maximum number of electrons in an orbital is 2n^2, where n is the energy level of the orbital.
- D. The principle that the attractive force between an electron and the nucleus is inversely proportional to the distance between them.
Correct answer: A
Rationale: The Aufbau principle is a fundamental concept in atomic structure that determines the order in which electrons fill the available orbitals in an atom. It states that electrons occupy orbitals in order of increasing energy levels, starting with the lowest energy level and progressing to higher energy levels. This principle is based on the fact that electrons in lower energy levels are more stable and have a lower energy state than electrons in higher energy levels.
6. Which skin condition is characterized by patches of inflamed, reddened skin and is often triggered by allergens or stress?
- A. Eczema
- B. Psoriasis
- C. Acne
- D. Vitiligo
Correct answer: A
Rationale: The correct answer is A: Eczema. Eczema is a skin condition characterized by patches of inflamed, reddened skin that can be triggered by allergens or stress. It is a chronic condition that can cause itching and discomfort. Psoriasis (option B) is a different skin condition characterized by red, scaly patches on the skin. Acne (option C) is a common skin condition characterized by pimples and clogged pores. Vitiligo (option D) is a condition where the skin loses its pigment, resulting in white patches. Therefore, eczema best fits the description provided in the question.
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