ATI TEAS 7
ATI TEAS 7 Science Practice Test
1. What lab equipment would most likely be used to precisely measure the volume of a liquid solution?
- A. Flask
- B. Triple beam balance
- C. Graduated cylinder
- D. Test tube
Correct answer: C
Rationale: A graduated cylinder is the most suitable lab equipment for precisely measuring the volume of a liquid solution. Graduated cylinders are designed with calibrated markings that allow for accurate volume measurements of liquids. The other choices are not appropriate for measuring liquid volume: Flasks are used for mixing or storing liquids, triple beam balances are used for measuring mass, and test tubes are typically used for holding small amounts of substances during experiments.
2. What function do genes serve in the relationship between parents and offspring?
- A. Genes enable hereditary information to be passed from parents to offspring.
- B. Genes prohibit hereditary information from being passed from parents to offspring.
- C. Genes enable environmental factors to affect parents and offspring.
- D. Genes serve no function in the relationship between parents and offspring.
Correct answer: A
Rationale: Genes play a crucial role in passing hereditary information from parents to offspring, ensuring the transmission of genetic traits. This process forms the basis of inheritance and genetic continuity between generations. Choice B is incorrect as genes do not prohibit but rather facilitate the transmission of hereditary information. Choice C is incorrect because genes primarily transmit genetic information, while the influence of environmental factors is separate. Choice D is incorrect as genes are fundamental in genetic inheritance and the relationship between parents and offspring.
3. An atom has 2 protons, 4 neutrons, and 2 electrons. What is the approximate atomic mass of this atom?
- A. 2
- B. 4
- C. 6
- D. 8
Correct answer: D
Rationale: The atomic mass of an atom is the sum of the protons and neutrons in its nucleus. In this case, the atom has 2 protons and 4 neutrons, totaling 6 particles in the nucleus. Therefore, the approximate atomic mass of this atom is 6, making choice C incorrect. The number of electrons does not significantly contribute to the atomic mass, as they are much lighter and located in the electron cloud surrounding the nucleus. Choices A, B, and C are incorrect as they do not reflect the correct calculation of atomic mass based on protons and neutrons only.
4. What is the process of changing from a liquid to a gas called?
- A. Freezing
- B. Condensation
- C. Vaporization
- D. Sublimation
Correct answer: C
Rationale: The correct answer is C: Vaporization. Vaporization is the process by which a substance changes from a liquid state to a gas state. Choice A, Freezing, is incorrect as it refers to the process of changing from a liquid to a solid. Choice B, Condensation, is incorrect as it describes the process of changing from a gas to a liquid. Choice D, Sublimation, is incorrect as it involves changing directly from a solid to a gas without passing through the liquid state.
5. Which of the following is a constant?
- A. The number of protons in an oxygen atom
- B. The temperature at which iron ore will melt
- C. The human population size
- D. The time the sun rises each day
Correct answer: A
Rationale: The number of protons in an oxygen atom is a constant. This value is determined by the atomic number of the element and does not change regardless of the isotope of oxygen. The number of protons defines the element and remains consistent under normal conditions. Choices B, C, and D are not constants. The temperature at which iron ore will melt can vary depending on factors like pressure, the human population size is constantly changing, and the time the sun rises each day varies with the seasons and location.
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