Free Practice Quiz Question List

Foundations of Chemistry and Quantitative Reasoning Online Quiz Questions

Use this free practice quiz with 20 questions to review Foundations of Chemistry and Quantitative Reasoning, test your knowledge, and prepare for your next test or exam.

20 questions

Choose one

1 point

Which description identifies a homogeneous mixture?

A
A sample containing one type of atom
B
A mixture with uniform composition throughout
C
A compound whose elements are chemically combined in a fixed ratio
D
A mixture whose composition varies from place to place

Choose one

1 point

A balance gives repeated mass readings of 10.21 g, 10.20 g, and 10.21 g for a sample whose accepted mass is 10.50 g. How should these measurements be described?

A
Accurate but imprecise
B
Both accurate and precise
C
Precise but inaccurate
D
Neither accurate nor precise

Choose one

1 point

A sample is at 25.0 °C. Using $T(\mathrm{K})=T(^\circ\mathrm{C})+273.15$ , what is its temperature in kelvins, reported with the appropriate precision?

A
248.2 K
B
273.2 K
C
298.0 K
D
298.2 K

Choose one

1 point

Which result is correctly reported with significant figures for (4.56 × 1.4) ÷ 2.00?

A
3.2
B
3.19
C
3.192
D
3

Choose all

1 point

Select all statements that correctly describe dimensional analysis.

A
Conversion factors can be arranged so unwanted units cancel.
B
The numerical value must remain unchanged during every unit conversion.
C
The physical quantity remains the same even though its numerical representation may change.
D
Conversion factors create a new physical dimension for the quantity.

Choose all

1 point

Select all statements that correctly describe the mole.

A
The mole is a unit of volume.
B
The mole is the SI unit for amount of substance.
C
A mole always refers only to atoms.
D
The chemical entities counted should be stated when ambiguity is possible.

True or false

1 point

A measurement is complete when it includes only a numerical value; a unit is optional.

A
True
B
False

True or false

1 point

The equation $d=vt$ is dimensionally consistent when velocity is measured in m/s and time is measured in s.

A
True
B
False

Written response

1 point

A liquid has a mass of 39.6 g and a volume of 30.0 mL. What is its density? Enter the value in g/mL.

Written response

1 point

What method converts quantities by multiplying by conversion factors arranged so that unwanted units cancel?

Fill in the blank

1 point

A quantity that does not depend on the amount of material in the sample is called an quantity.

Fill in the blank

1 point

In a straight-line mass-versus-volume graph, the graph feature that can represent density is the .

Open ended

1 point

Explain a reliable workflow for solving a quantitative chemistry problem. Include how you would handle the target, known values, units, the governing relationship, significant figures, and the final check.

Choose one

1 point

Using the SI prefix kilo- and reporting three significant figures, what is 2.50 km expressed in meters?

A
2.50 × 10^-3 m
B
2.50 × 10^1 m
C
2.50 × 10^3 m
D
2.50 × 10^5 m

True or false

1 point

True or false: A complete measurement must include both a numerical value and a unit.

A
True
B
False

Choose one

1 point

Which quantity is intensive rather than extensive?

A
Density
B
Mass
C
Volume
D
Amount of substance

Choose one

1 point

A liquid has a mass of 39.6 g and a volume of 30.0 mL. What is its density?

A
0.758 g/mL
B
1.32 g/mL
C
9.60 g/mL
D
69.6 g/mL

Choose one

1 point

What is 25.00 °C expressed in kelvins?

A
248.15 K
B
273.15 K
C
298.15 K
D
310.15 K

Written response

1 point

What chemistry method converts quantities by multiplying by conversion factors equal to one so that unwanted units cancel?

Written response

1 point

A metal sample has a density of 7.85 g/cm³ and a volume of 12.0 cm³. What is its mass? Enter the value in grams.