Chemistry: An Introduction to General, Organic, and Biological Chemistry

Karen C. Timberlake

Chapter 2

Chemistry and Measurements - all with Video Answers

Educators

Section 1

Units of Measurement

Problem 1

Write the abbreviation for each of the following:
a. gram
b. degree Celsius
c. liter
d. pound
e. second

Patsy Naomi

Patsy Naomi

Numerade Educator

Problem 2

Write the abbreviation for each of the following:
a. kilogram
b. kelvin
c. quart
d. meter
e. centimeter

Patsy Naomi

Numerade Educator

Problem 3

State the type of measurement in each of the following statements:
a. I put $12 \mathrm{~L}$ of gasoline in my gas tank.
b. My friend is $170 \mathrm{~cm}$ tall.
c. Earth is $385000 \mathrm{~km}$ away from the Moon.
d. The horse won the race by $1.2 \mathrm{~s}$.

Patsy Naomi

Numerade Educator

Problem 4

State the type of measurement in each of the following statements:
a. I rode my bicycle $15 \mathrm{~km}$ today.
b. My dog weighs $12 \mathrm{~kg}$.
c. It is hot today. It is $30^{\circ} \mathrm{C}$.
d. I added 2 L of water to my fish tank.

Patsy Naomi

Numerade Educator

Problem 5

State the name of the unit and their use of measurement for
each of the following quantities.
a. $3.4 \mathrm{~cm}$
b. $500 \mathrm{mg}$
c. $2.0 \mathrm{~L}$
d. $60 \mathrm{~s}$
e. $300 \mathrm{~K}$

Patsy Naomi

Numerade Educator

Problem 6

Arrange the following in descending order:
a. $10 \mathrm{~cm}$
b. $1 \mathrm{~m}$
c. $100 \mathrm{~mm}$
d. $1 \mathrm{~km}$

Patsy Naomi

Numerade Educator

Problem 7

On a typical day, medical personnel may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
a. The clotting time for a blood sample is $12 \mathrm{~s}$.
b. A premature baby weighs $2.0 \mathrm{~kg}$.
c. An antacid tablet contains $1.0 \mathrm{~g}$ of calcium carbonate.
d. An infant has a temperature of $39.2^{\circ} \mathrm{C}$.

Patsy Naomi

Numerade Educator

Problem 8

On a typical day, medical personnel may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
a. During open-heart surgery, the temperature of a patient is lowered to $29^{\circ} \mathrm{C}$
b. The circulation time of a red blood cell through the body is $20 \mathrm{~s}$
c. A patient with a persistent cough is given $10 . \mathrm{mL}$ of cough syrup.
d. The amount of iron in the red blood cells of the body is $2.5 \mathrm{~g}$.

Patsy Naomi

Numerade Educator