(4B) Density Calculations

Front

What is density?

Back

Density is the mass of an object divided by its volume, typically expressed in grams per cubic centimeter (g/cm³).

Front

How do you calculate density?

Back

Density = Mass / Volume.

Front

What is the density of water?

Back

The density of water is approximately 1 g/cm³.

Front

What happens to an object with a density less than that of water when placed in water?

Back

It will float.

Front

What happens to an object with a density greater than that of water when placed in water?

Back

It will sink.

Front

How do you find the volume of an irregular object using water displacement?

Back

Submerge the object in water and measure the change in water level.

Front

What is the formula to find mass if density and volume are known?

Back

Mass = Density × Volume.

Front

If a plastic ball has a mass of 15.8 g and a volume of 19.7 cm³, what is its density?

Back

Density = 15.8 g / 19.7 cm³ = 0.802 g/cm³.

Front

What is the significance of a substance's density in real-world applications?

Back

Density helps determine whether substances will float or sink in fluids, which is important in various fields such as engineering and environmental science.

Front

What is the density range of gasoline?

Back

The density of gasoline is approximately 0.66-0.69 g/cm³.