Solving Conversion Problems

How are two parts of a conversion factor related?

• They aren't.
• They are equivalent.
• They are non-equivalent. 

In a conversion factor, the smaller number is part of the quantity that has the ___________ unit. The larger number is part of the quantity that has the ___________ unit. 

• larger; smaller
• smaller; larger
• simple; complex
• complex; simple

The average lead for a mechanical pencil is 6.0 cm long when it is new. Which conversion factor would you use to find the length in inches?

• 2.54 cm / 1 in
• 1 in / 2.54 cm
• 1 in / 6.0 cm
• 6.0 cm / 1 in

True or False? Dimensional analysis is a way to analyze and solve problems, using the units, or dimensions, of the measurements.

• True
• False

Converting between units is easily done using ____________.

• conversion factors
• chemistry magic
• math magic
• just plain ol' magic

Convert the following:
0.25 meters to centimeters

• 25 cm
• 0.25 cm
• 2.5 cm
• 250 cm

Convert the following:
9.8 grams to kilograms

• 0.0098 kg
• 0.98 kg
• 0.098 kg
• 9.8 kg

Convert the following: 
35 milliseconds to seconds

• 0.035 seconds
• 0.35 seconds
• 3.5 seconds
• 0.0035 seconds

Convert the following:
4.2 deciliters to liters

• 0.42 Liters
• 4.2 Liters
• 42 Liters
• 0.042 Liters

Convert the following:
8.1 cm converted into nanometers

• 8.1 x 10⁷ nm
• 8.1 x 10⁹ nm
• 8.1 x 10¹¹ nm
• 8.1 x 10^-7 nm