Understanding Density

What is the formula for density?

• Volume minus mass

• Mass times volume

• Mass divided by volume

• Volume divided by mass

Why is the density of gases usually expressed in grams per liter?

• Because gases are denser than liquids

• Because it is more convenient to write

• Because gases are less dense than liquids

• Because it is the standard unit for all substances

Why does ice float in soda?

• Ice has a lower density than soda

• Ice and soda have the same density

• Ice has a higher density than soda

• Ice is heavier than soda

How is the volume of a vaccine typically measured?

• By weighing it

• By calculating its mass

• Using a syringe

• Using a ruler

If a vaccine has a density of 0.785 g/ml, how much volume is needed for 1.2g?

• 0.785 ml

• 1.5 ml

• 2 ml

• 1.2 ml

What principle is used to determine the volume of an irregular object like a crown?

• Archimedes' Principle

• Pascal's Principle

• Bernoulli's Principle

• Newton's Principle

What is the calculated density of the crown in the example?

• 12.8 g/cm³

• 10.2 g/cm³

• 15.5 g/cm³

• 19.31 g/cm³

Why is the crown not made of pure gold?

• It is made of copper

• Its density is higher than gold

• Its density is lower than gold

• It is made of silver

What is the density of pure gold?

• 19.31 g/cm³

• 12.8 g/cm³

• 10.5 g/cm³

• 15.0 g/cm³

What is the basic formula for density?

• Density = Volume / Mass

• Density = Mass / Volume

• Density = Mass + Volume

• Density = Mass x Volume