ATI TEAS 7
Chemistry
1. The process of a gas changing directly into a solid is called:
- A. Condensation
- B. Deposition
- C. Sublimation
- D. Evaporation
Correct answer: B
Rationale: This process, also known as sublimation, involves gas particles losing energy and transitioning directly into the solid state.
2. Which property of a substance measures the amount of matter per unit volume?
- A. Density
- B. Mass
- C. Weight
- D. Volume
Correct answer: a
Rationale: Density is the property that measures the amount of matter (mass) per unit volume of a substance. It is calculated as mass divided by volume.
3. A clinic sees an average of 25 patients every 4 hours. If the clinic is open for 8 hours, how many patients will they see in total?
- A. 35
- B. 50
- C. 75
- D. 200
Correct answer: D
Rationale: Rationale: 1. First, determine how many patients the clinic sees in one hour: 25 patients / 4 hours = 6.25 patients per hour (approximately 6 patients per hour) 2. Since the clinic is open for 8 hours, multiply the number of patients seen per hour by the number of hours the clinic is open: 6.25 patients/hour * 8 hours = 50 patients 3. Therefore, the clinic will see a total of 50 patients in 8 hours, which corresponds to answer choice D) 200.
4. What is the main function of the gallbladder?
- A. To store and concentrate bile
- B. To produce digestive enzymes
- C. To absorb nutrients
- D. To neutralize stomach acid
Correct answer: A
Rationale: Rationale: The gallbladder is a small organ located beneath the liver that plays a crucial role in the digestive system. Its main function is to store and concentrate bile, a digestive fluid produced by the liver. Bile is released from the gallbladder into the small intestine to help with the digestion and absorption of fats. The gallbladder acts as a reservoir for bile, allowing it to be released in a controlled manner when needed to aid in the digestion of fatty foods. Therefore, option A is the correct answer as it accurately describes the main function of the gallbladder.
5. Which cartilage type allows for smooth movement at joints and absorbs shock?
- A. Hyaline cartilage
- B. Fibrocartilage
- C. Elastic cartilage
- D. None of the above
Correct answer: A
Rationale: The correct answer is A: Hyaline cartilage. Hyaline cartilage is the most abundant type of cartilage in the body and is found in the joints, providing a smooth surface for movement. It also acts as a shock absorber, cushioning the joints during activities. Fibrocartilage is found in intervertebral discs and provides strength and support, but it is not as effective at absorbing shock as hyaline cartilage. Elastic cartilage is found in the external ear and epiglottis, providing flexibility and maintaining shape, but it does not have the same shock-absorbing properties as hyaline cartilage. Therefore, hyaline cartilage is the best choice for a cartilage type that allows for smooth movement at joints and absorbs shock.
6. Which form of energy is associated with the motion of an object?
- A. Kinetic energy
- B. Potential energy
- C. Thermal energy
- D. Electrical energy
Correct answer: a
Rationale: Kinetic energy is the energy of motion possessed by an object.
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