Density

Front

What is density?

Back

Density is a measure of how much mass is contained in a given volume. It is usually expressed in grams per milliliter (g/mL) or kilograms per cubic meter (kg/m³).

Front

What is the formula for calculating density?

Back

Density = Mass / Volume

Front

What tool is used to measure mass?

Back

Triple beam balance

Front

What tool is used to measure volume of liquids?

Back

Graduated cylinder

Front

How do you calculate the density of an object?

Back

To calculate density, divide the mass of the object by its volume (Density = Mass / Volume).

Front

If an object has a mass of 20g and a volume of 10mL, what is its density?

Back

Density = 20g / 10mL = 2 g/mL

Front

What is the relationship between density and buoyancy?

Back

An object will float in a fluid if its density is less than the density of the fluid. It will sink if its density is greater.

Front

How can you determine if an object will sink or float in water?

Back

Compare the object's density to the density of water (1 g/mL). If the object's density is less than 1 g/mL, it will float; if greater, it will sink.

Front

What is the density of water?

Back

The density of water is approximately 1 g/mL at 4°C.

Front

What happens to the density of most substances when they are heated?

Back

Most substances expand when heated, which decreases their density.