10 L118 RP1 Measuring Density

What is the formula for density?

• density = mass × volume

• density = mass / volume

• density = volume / mass

• density = mass + volume

Which equation correctly represents the relationship between mass, volume, and density?

• ρ = m / v

• ρ = v / m

• ρ = m × v

• ρ = m + v

If oil floats on water, what can we infer about its density compared to water?

• Oil has a lower density than water

• Oil has a higher density than water

• Oil has the same density as water

• Oil is heavier than water

Which of the following objects will float on water?

• An object with a density less than 1000 kg/m³

• An object with a density more than 1000 kg/m³

• An object with a density equal to 2000 kg/m³

• An object with a density equal to 1500 kg/m³

What is the density of a substance if its mass is 0.03432 kg and its volume is 0.00004 m³?

• 858 kg/m³

• 3432 kg/m³

• 0.00086 kg/m³

• 0.86 kg/m³

If a student records the mass of the oil as 0.03432 kg and the volume as 0.00004 m³, what reasoning should they use to check if their calculated density is reasonable?

• Compare with known densities of similar substances

• Ignore the units

• Use only the mass value

• Use only the volume value

After adding orange juice to the measuring cylinder, what two measurements are needed to calculate density?

• Volume and temperature

• Mass and volume

• Height and width

• Color and taste

How do you find the mass of just the orange juice?

• Subtract the mass of the empty cylinder from the mass of the cylinder with juice

• Add the mass of the empty cylinder to the mass of the juice

• Weigh the juice separately

• Divide the mass of the cylinder by the mass of the juice

Why is it important to convert mass to kilograms and volume to cubic meters before calculating density in SI units?

• To make the numbers smaller

• To match the units for density in kg/m³

• To make calculations easier

• To avoid using decimals

Which of the following is NOT a reason why fresh water floats on salt water?

• Lower density of fresh water

• Higher density of salt water

• Fresh water is colder

• Difference in salinity