Question 1

Which of the following is the correct SI unit for measuring the mass of a patient in a hospital?

Accepted Answer

kilogram (kg)

Question 2

A chemist measures the temperature of a reaction as $$350\ ^\circ\mathrm{C}. $$What is the correct SI unit for this measurement, and how would you convert it?

Accepted Answer

Kelvin (K); $$K = ^\circ\mathrm{C} + 273$$

Question 3

A bottle contains $$1.5\ \mathrm{L} of $$saline solution. Which of the following is the equivalent volume in milliliters (mL)?

Accepted Answer

$$1500\ \mathrm{mL}$$

Question 4

Which of the following measurements is expressed in an SI unit?

Accepted Answer

2.0 kg

Question 5

A runner completes a race in $$360\ \mathrm{s}. $$What is the SI base unit used to measure this time?

Accepted Answer

second (s)

Question 6

A laboratory sample has a mass of $$0.500\ \mathrm{kg}. $$What is this mass in grams (g)?

Accepted Answer

$$500\ \mathrm{g}$$

Question 7

Which of the following is the correct relationship between centimeters and inches?

Accepted Answer

$$2.54\ \mathrm{cm} = 1\ \mathrm{in.}$$

Question 8

A medication contains $$0.50\ \mathrm{g} of $$aspirin. Which property is being measured?

Accepted Answer

Mass

Question 9

A patient’s body temperature is measured as $$310\ \mathrm{K}. $$What is this temperature in degrees Celsius?

Accepted Answer

$$37\ ^\circ\mathrm{C}$$

Question 10

Which of the following is NOT a correct SI base unit and its property?

Accepted Answer

liter (L) – volume

Question 11

A nurse needs to convert a patient’s weight from pounds to kilograms. If the patient weighs $$154\ \mathrm{lb}$$, what is the mass in kilograms? (Use $$1\ \mathrm{kg} = 2.20\ \mathrm{lb})$$

Accepted Answer

$$70.0\ \mathrm{kg}$$

Question 12

Which of the following best describes the difference between the metric system and the SI system?

Accepted Answer

The SI system is a modernized version of the metric system adopted as an international standard.

Question 13

A graduated cylinder contains $$946\ \mathrm{mL} of $$water. How many quarts (qt) does this represent? (Use $$1\ \mathrm{L} = 1.06\ \mathrm{qt}$$ and $$1\ \mathrm{L} = 1000\ \mathrm{mL})$$

Accepted Answer

$$1.00\ \mathrm{qt}$$

Question 14

Which of the following is the correct SI unit for measuring the length of a marathon race?

Accepted Answer

meter (m)

Question 15

A scientist records a measurement as $$2.1\ \mathrm{km}. $$How many meters is this?

Accepted Answer

$$2100\ \mathrm{m}$$

Question 16

Which of the following statements about temperature scales is correct?

Accepted Answer

The Kelvin scale begins at absolute zero, the lowest possible temperature.

Question 17

A patient’s IV bag contains $$500\ \mathrm{mL} of $$saline. How many liters is this?

Accepted Answer

$$0.5\ \mathrm{L}$$

Question 18

Which of the following is a correct conversion factor for mass?

Accepted Answer

$$1\ \mathrm{kg} = 1000\ \mathrm{g}$$

Question 19

A student measures a table to be $$1.09\ \mathrm{yd}$$ long. What is the length in meters? (Use $$1\ \mathrm{m} = 1.09\ \mathrm{yd})$$

Accepted Answer

$$1.00\ \mathrm{m}$$

Question 20

Which of the following best describes the property measured by a graduated cylinder?

Accepted Answer

Volume

Chapter 2: Chemistry and Measurements – Units of Measurement in GOB Chemistry

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