chem UNIT 5.3 Review: Dimensional Analysis

Front

What is dimensional analysis?

Back

Dimensional analysis is a mathematical technique used to convert one unit of measurement to another using conversion factors.

Front

What is a conversion factor?

Back

A conversion factor is a ratio that expresses how many of one unit are equal to another unit.

Front

How do you set up a dimensional analysis problem?

Back

Identify the given quantity, determine the desired quantity, and use conversion factors to create a chain of equalities that leads to the desired unit.

Front

If 1 inch = 2.54 cm, how many centimeters are in 10 inches?

Back

10 inches x (2.54 cm / 1 inch) = 25.4 cm.

Front

What is the purpose of using dimensional analysis in problem-solving?

Back

Dimensional analysis helps ensure that calculations are correct and that units are consistent throughout the problem.

Front

How can you check if your dimensional analysis is correct?

Back

Verify that the units cancel appropriately and that the final unit matches the desired outcome.

Front

What is the relationship between ounces and pounds?

Back

1 pound = 16 ounces.

Front

If you have 32 ounces, how many pounds do you have?

Back

32 ounces x (1 pound / 16 ounces) = 2 pounds.

Front

What is the formula for converting miles to kilometers?

Back

1 mile = 1.60934 kilometers.

Front

If a car travels 60 miles, how many kilometers does it travel?

Back

60 miles x (1.60934 km / 1 mile) = 96.5604 km.