ATI TEAS 7
Chemistry
1. What is the term for the chemical reaction that involves the loss of electrons?
- A. Reduction
- B. Oxidation
- C. Neutralization
- D. Precipitation
Correct answer: b
Rationale: Oxidation is the chemical reaction that involves the loss of electrons. The other choices describe different types of reactions.
2. The formula for body mass index (BMI) is BMI = weight (kg) / height (m)^2. If a patient's BMI is 25 and their height is 1.7m, what is their weight?
- A. 34kg
- B. 45kg
- C. 56kg
- D. 68kg
Correct answer: C
Rationale: 56kg: Rearrange the formula to solve for weight: weight = BMI * height^2.
3. You need to repaint a cylindrical water tank with a diameter of 2 meters and a height of 3 meters. Assuming one can of paint covers 10 sq m, how many cans do you need (consider only the exterior surface)?
- A. 6 cans
- B. 9 cans
- C. 12 cans
- D. 15 cans
Correct answer: C
Rationale: Calculate the surface area of the cylinder and divide by the coverage area per can.
4. Identify the verb in the following sentence: The dog chased the fluffy squirrel around the oak tree.
- A. around
- B. chased
- C. squirrel
- D. the
Correct answer: B
Rationale: Verbs express actions or states of being. In this sentence, "chased" describes what the dog did.
5. A lampshade is shaped like a frustum of a cone, with base diameters of 20cm and 10cm and a height of 15cm. What is its volume?
- A. 625 cu cm
- B. 1250 cu cm
- C. 1875 cu cm
- D. 2500 cu cm
Correct answer: C
Rationale: This requires dividing the frustum into two cones and calculating their individual volumes before subtracting them. The formula for a cone frustum involves the radii of both bases and the height.
6. Identify the adjective in the following sentence: The colorful sunset painted the sky with vibrant hues.
- A. sunset
- B. with
- C. colorful
- D. painted
Correct answer: C
Rationale: Adjectives modify nouns and pronouns. The adjective "colorful" describes the noun "sunset".
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