Chemistry 3.3 - 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

True or False? The actual size of a measurement multiplied by a conversion factor remains the same, because the measurement being converted is multiplied by unity.

• True
• False

Which of the following is NOT a conversion factor that relates hours and minutes?

• 1 hr/60 min
• 60 min/1hr
• 1 min/60 hr

Tags

CCSS.4.MD.A.1

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

A student is aksed to calculate the volume, in milliliters, of 2 cups of oil. There are 225 mL per cup. The student calculates the volume as follows:
Volume = 2 cups (1cup÷25mL) = 0.08 cup
Which of the following is NOT an error the student made?

• The student was trying to solve for volume.
• The conversion factor was inverted.
• 25 mL was used instead of 225 mL.
• The unit in the answer is incorrect. 

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

• True
• False

Tags

NGSS.HS-PS2-1

NGSS.HS-PS4-1

A container can hold 65 grams of water. Circle the conversion factor needed to find the mass of water that 5 identical containers can hold.

• 5 containers / 65 grams
• 1 container / 65 grams
• 65 grams / 1 container
• 65 grams / 5 containers

Converting between units is easily done using ____________.

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

Which of the following conversion factors would you use to convert tablespoons to milliliters?

• 4 fluid ounces / 1 tablespoon
• 1 tablespoon / 4 fluid ounces
• 1 tablespoon / 15 mL
• 15 mL / 1 tablespoon