Solving Density Practice Problems

The video tutorial explains how to calculate density using mass and volume, with examples involving granite rock, gold, and isopropyl alcohol. It covers the concept of density as a conversion factor, significant figures in calculations, and the use of different units for solids and liquids. The tutorial also highlights the importance of choosing the correct conversion factor to cancel out units and provides a brief introduction to more complex density problems to be covered in the next video.

What is the formula for calculating density?

• Density = Volume / Mass

• Density = Mass / Volume

• Density = Mass * Volume

• Density = Volume - Mass

If a granite rock has a mass of 15.5 grams and a volume of 6.01 cubic centimeters, what is its density?

• 2.55 g/cm³

• 2.60 g/cm³

• 2.57 g/cm³

• 2.58 g/cm³

How many significant figures should be used in the final answer if both the mass and volume have three significant figures?

• Two

• Five

• Three

• Four

What are the units for density if the mass is in grams and the volume is in cubic centimeters?

• g/cm

• g/cm³

• cm³/g

• g²/cm³

What is the density of gold?

• 0.785 g/cm³

• 19.3 g/cm³

• 6.01 g/cm³

• 15.5 g/cm³

If a gold bar has a volume of 44.9 cubic centimeters, what is its mass?

• 850 g

• 800 g

• 900 g

• 867 g

How can density be used as a conversion factor?

• Both A and B

• To convert volume to mass

• None of the above

• To convert mass to volume

What is the density of isopropyl alcohol?

• 6.01 g/cm³

• 0.785 g/cm³

• 19.3 g/cm³

• 15.5 g/cm³

How much volume would 50.0 grams of isopropyl alcohol occupy?

• 19.3 cm³

• 44.9 cm³

• 50.0 cm³

• 63.7 cm³

What is the equivalent of 1 cubic centimeter in milliliters?

• 100 mL

• 10 mL

• 1 mL

• 0.1 mL