$\text{Density} = \frac{\text{mass}}{\text{volume}}$

$33 \text{ m/min} \times 45 \text{ min} \times \frac{1 \text{ km}}{1000 \text{ m}}$

$\text{Specific gravity} = \frac{\text{density of sample}}{\text{density of water}}$

Question 1

Which of the following is the correct SI unit for measuring mass?

Accepted Answer

kilogram (kg)

Question 2

A scientist measures the length of a sample as 0.00361 lb. How many significant figures are in this measurement?

Accepted Answer

3

Question 3

Which of the following measurements is an exact number?

Accepted Answer

1 m = 100 cm

Question 4

A medication contains 0.50 g of aspirin. What type of unit is this?

Accepted Answer

Mass

Question 5

Which metric prefix represents one-thousandth ($0.001$) of a unit?

Accepted Answer

milli

Question 6

A sample of HDL cholesterol has a mass of $0.258$ g and a volume of $0.215$ cm$^3$. What is its density?

Accepted Answer

$1.20$ g/cm$^3$

Question 7

Which of the following is the correct conversion factor for $1$ kg to grams?

Accepted Answer

$1$ kg = $1000$ g

Question 8

A student adds $104.45$ mL, $0.838$ mL, and $46$ mL of liquid. What is the answer rounded to the correct number of decimal places?

Accepted Answer

$151$ mL

Question 9

Which of the following measurements contains four significant figures?

Accepted Answer

25.300

Question 10

A lead weight has a mass of $226$ g and displaces water from $200.0$ cm$^3$ to $220.0$ cm$^3$. What is its density?

Accepted Answer

$11.3$ g/cm$^3$

Question 11

Which of the following is the correct equality for $1$ m in terms of centimeters?

Accepted Answer

$1$ m = $100$ cm

Question 12

A person has a blood volume of $5.9$ qt. If the density of blood is $1.06$ g/mL, what is the mass of blood in grams? (1 qt = 946.3 mL)

Accepted Answer

$5,930$ g$\approx$ (rounded)

Question 13

Which of the following is NOT a significant figure in the number $0.0008$ g?

Accepted Answer

The zeros at the beginning

Question 14

Which of the following is the correct conversion factor for $1$ L to milliliters?

Accepted Answer

$1$ L = $1000$ mL

Question 15

A cube has sides of $1$ cm. What is its volume in milliliters?

Accepted Answer

$1$ mL

Question 16

Which of the following is the correct formula for density?

Accepted Answer

$	ext{Density} = \frac{	ext{mass}}{	ext{volume}}$

Question 17

A scientist needs to convert $33$ m/min to km in $45$ min. What is the correct calculation setup?

Accepted Answer

$33 	ext{ m/min} 	imes 45 	ext{ min} 	imes \frac{1 	ext{ km}}{1000 	ext{ m}}$

Question 18

Which of the following is the correct rule for rounding off when the first digit to be dropped is 5 or greater?

Accepted Answer

Increase the last retained digit by 1

Question 19

Which of the following is the correct equality for $1$ mm in meters?

Accepted Answer

$1$ mm = $0.001$ m

Question 20

Which of the following is the correct formula for specific gravity?

Accepted Answer

$	ext{Specific gravity} = \frac{	ext{density of sample}}{	ext{density of water}}$

Chapter 2: Measurements in General Chemistry

Study Guide - Practice Questions