ATI TEAS 7
Mathematics
1. A lab test result shows a blood glucose level of 5.5 millimoles per liter (mmol/L). What is the equivalent level in milligrams per deciliter (mg/dL)?
- A. 55 mg/dL
- B. 5.5 mg/dL
- C. 0.55 mg/dL
- D. 550 mg/dL
Correct answer: A
Rationale: This requires a double conversion: millimoles to milligrams and liters to deciliters. 1 millimole is equal to 180.15 milligrams, and 1 liter is equal to 10 deciliters. Multiply the glucose level (5.5 mmol/L) by the conversion factor for millimoles to milligrams (180.15 mg/mmol) and then divide by the conversion factor for liters to deciliters (10 dL/L): 5.5 mmol/L * 180.15 mg/mmol / 10 dL/L ≈ 55 mg/dL.
2. The number of protons in an atom is determined by its:
- A. Atomic mass
- B. Electron configuration
- C. Chemical properties
- D. Atomic number
Correct answer: C
Rationale: Atomic number is a fundamental property of an element and is independent of its mass, electron configuration, or chemical behavior.
3. Which of the following is NOT a type of intermolecular force?
- A. Hydrogen bonding
- B. Dipole-dipole interactions
- C. Ionic bonding
- D. London dispersion forces
Correct answer: C
Rationale: Ionic bonding is a type of intramolecular force, holding ions together within an ionic compound. Intermolecular forces are responsible for the interactions between individual molecules.
4. A substance that can donate a hydroxide ion (OH-) in solution is classified as a:
- A. Salt
- B. Base
- C. Neutral compound
- D. Dehydrating agent
Correct answer: B
Rationale: Bases accept protons (H+) and can donate hydroxide ions
5. Which group of elements are known for their vibrant colors and use in fireworks?
- A. Noble gases
- B. Alkali metals
- C. Halogens
- D. Transition metals
Correct answer: D
Rationale: Transition metals exhibit diverse electronic configurations, leading to their ability to emit specific colors of light, making them ideal for fireworks.
6. What is the momentum of a car with a mass of 1500 kg moving at a speed of 20 m/s?
- A. 30,000 kg m/s
- B. 1500 kg m/s
- C. 20 kg m/s
- D. Momentum cannot be determined without knowing the direction of motion.
Correct answer: A
Rationale: Momentum is defined as the product of mass and velocity. Momentum = mass x velocity = 1500 kg x 20 m/s = 30,000 kg m/s.
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