ATI TEAS 7
Chemistry
1. What is the characteristic property of acids?
- A. Bitter taste
- B. Sour taste
- C. Slippery feel
- D. Sweet taste
Correct answer: b
Rationale: Acids typically have a sour taste. The other choices do not accurately describe the characteristic properties of acids.
2. Which element is used in jewelry due to its malleability and resistance to tarnish?
- A. Iron
- B. Copper
- C. Gold
- D. Silver
Correct answer: C
Rationale: Gold's properties make it ideal for crafting durable and aesthetically pleasing jewelry
3. Which of the following joints allows for side-to-side bending movements?
- A. Hinge joint
- B. Ball-and-socket joint
- C. Gliding joint
- D. Saddle joint
Correct answer: C
Rationale: The correct answer is C: Gliding joint. Gliding joints are found where the bones meet and allow for limited side-to-side and back-and-forth movements. These joints have flat or slightly curved surfaces that glide against each other, enabling smooth motion in multiple directions. Hinge joints (A) allow for movement in one plane like a door hinge, ball-and-socket joints (B) allow for a wide range of motion in multiple directions, and saddle joints (D) allow for back-and-forth and side-to-side movements but are primarily designed for flexion and extension like the joint at the base of the thumb.
4. An IV bag contains 500ml of saline solution and needs to be infused over 4 hours. What is the flow rate in drops per minute, assuming 20 drops per milliliter?
- A. 12.5 drops/min
- B. 25 drops/min
- C. 50 drops/min
- D. 100 drops/min
Correct answer: C
Rationale: Calculate the total volume in drops (500ml * 20 drops/ml = 10,000 drops). Divide this by the infusion time in minutes (4 hours * 60 minutes/hour = 240 minutes) to get the flow rate.
5. Which part of the nervous system is responsible for transmitting signals from the sensory organs to the central nervous system?
- A. Autonomic nervous system
- B. Somatic nervous system
- C. Peripheral nervous system
- D. Central nervous system
Correct answer: C
Rationale: The correct answer is C: Peripheral nervous system. The peripheral nervous system is responsible for transmitting signals from the sensory organs to the central nervous system. It consists of nerves outside of the brain and spinal cord that carry information to and from the central nervous system. The autonomic nervous system (A) regulates internal bodily functions, the somatic nervous system (B) controls voluntary movements, and the central nervous system (D) includes the brain and spinal cord where processing of signals occurs, rather than transmitting signals from the sensory organs.
6. Two cars with different masses collide head-on. Which car experiences a greater change in momentum?
- A. The car with the larger mass
- B. The car with the smaller mass
- C. Both cars experience the same change in momentum
- D. It depends on the initial velocities of the cars
Correct answer: B
Rationale: The car with the smaller mass. Although momentum is conserved in the collision, the change in momentum is inversely proportional to mass. Therefore, the car with the smaller mass will experience a larger relative change.
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