ATI TEAS 7
Chemistry
1. What is the electron configuration of an atom?
- A. The arrangement of electrons in an atom's orbitals.
- B. The number of protons in an atom's nucleus.
- C. The number of neutrons in an atom's nucleus.
- D. The number of electrons in an atom's valence shell.
Correct answer: A
Rationale: The electron configuration of an atom refers to the arrangement of electrons in the atom's orbitals. This arrangement determines the atom's chemical properties and behavior. The number of protons in an atom's nucleus (option B) is known as the atomic number, while the number of neutrons in an atom's nucleus (option C) contributes to the atom's mass number. The number of electrons in an atom's valence shell (option D) is important for understanding the atom's reactivity and bonding behavior.
2. Based on the passage, the author's attitude towards online learning is likely to be
- A. Skeptical and critical, focusing solely on its limitations and negative impacts.
- B. Enthusiastic and optimistic, overlooking any potential issues and promoting its universal adoption.
- C. Cautiously pragmatic, recognizing its valuable potential while advocating for addressing its downsides.
- D. Indifferent and neutral, lacking any strong opinion on its role in education.
Correct answer: C
Rationale: The emphasis on both benefits and challenges suggests a balanced and pragmatic perspective, aligning with C.
3. The process of a liquid changing into a gas is called:
- A. Evaporation
- B. Boiling
- C. Condensation
- D. Sublimation
Correct answer: A
Rationale: Evaporation occurs at any temperature, while boiling only occurs at the boiling point of the liquid.
4. Which type of cell is responsible for carrying oxygen throughout the body?
- A. Nerve cell
- B. Muscle cell
- C. Skin cell
- D. Red blood cell
Correct answer: D
Rationale: The correct answer is D: Red blood cell. Red blood cells, also known as erythrocytes, are responsible for carrying oxygen throughout the body. They contain hemoglobin, a protein that binds to oxygen in the lungs and transports it to tissues and organs. Nerve cells (option A) transmit electrical signals, muscle cells (option B) are involved in movement, and skin cells (option C) form the outer layer of the skin and provide protection.
5. What is the scientific term for the windpipe, a tube that carries air from the larynx to the bronchi?
- A. Pharynx
- B. Trachea
- C. Epiglottis
- D. Bronchiole
Correct answer: B
Rationale: The correct answer is B: Trachea. The trachea is the scientific term for the windpipe, which is a tube that carries air from the larynx to the bronchi. The pharynx is the throat area where the mouth and nasal passages meet. The epiglottis is a flap of tissue that covers the trachea during swallowing to prevent food from entering the airway. Bronchioles are smaller airway branches in the lungs. Therefore, the trachea best fits the description of a tube carrying air from the larynx to the bronchi.
6. Which property of a substance refers to its ability to be stretched into thin wires?
- A. Conductivity
- B. Viscosity
- C. Ductility
- D. Malleability
Correct answer: c
Rationale: Ductility refers to a substance's ability to be stretched into thin wires without breaking.
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