ATI TEAS 7
Chemistry
1. What is the term for a hydrocarbon chain with no double or triple bonds between carbon atoms?
- A. Saturated
- B. Unsaturated
- C. Aromatic
- D. Alkene
Correct answer: A
Rationale: A saturated hydrocarbon chain has only single bonds between carbon atoms. The other choices are associated with unsaturation or aromaticity.
2. Which of the following guidelines should be least considered in formulating objectives for
- A. Written nursing care plan
- B. Holistic approach
- C. Prescribed standards
- D. Staff preferences
Correct answer: D
Rationale: When formulating objectives for a written nursing care plan, staff preferences should be least considered. Objectives should be based on patient needs, evidence-based practice, and professional standards rather than personal preferences of the staff. Prescribed standards ensure quality care and adherence to best practices. A holistic approach considers the whole patient, including physical, emotional, and spiritual aspects. Staff preferences may introduce bias and should not dictate patient care objectives.
3. In a food chain, which trophic level captures energy from the sun?
- A. Decomposers
- B. Carnivores
- C. Producers
- D. Omnivores
Correct answer: C
Rationale: Rationale: Producers, such as plants, algae, and some bacteria, are the organisms in a food chain that capture energy from the sun through the process of photosynthesis. They convert sunlight into chemical energy, which is then passed on to other organisms in the food chain. Producers are at the base of the food chain and form the foundation for all other trophic levels to obtain energy. Decomposers (option A) break down organic matter, carnivores (option B) consume other animals, and omnivores (option D) consume both plants and animals, but they do not directly capture energy from the sun.
4. A triangular scarf has sides measuring 10cm, 12cm, and 15cm. What is its perimeter?
- A. 27cm
- B. 32cm
- C. 37cm
- D. 45cm
Correct answer: C
Rationale: Simply add the lengths of all sides: perimeter = side1 + side2 + side3 = 10cm + 12cm + 15cm = 37cm.
5. The K-capture process, a type of electron capture, involves the capture of an electron from which electron shell:
- A. The outermost s-orbital
- B. An inner p-orbital
- C. An inner d-orbital
- D. Any available electron shell
Correct answer: A
Rationale: The K-capture process involves the capture of an electron from the innermost electron shell, known as the K-shell. The K-shell is represented by the outermost s-orbital in an atom's electron configuration. When an electron from the K-shell is captured, it results in the transition of a proton to a neutron in the nucleus, thereby changing the atomic number of the element. Therefore, option A, 'The outermost s-orbital,' is the correct answer as it accurately describes the electron shell involved in the K-capture process.
6. A syringe holds 3ml of liquid. How many syringes are needed to measure 15ml of liquid?
- A. 3
- B. 5
- C. 7
- D. 9
Correct answer: B
Rationale: Divide the total liquid volume (15ml) by the syringe capacity (3ml/syringe) to get 5 syringes.
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