Density

Front

What is density?

Back

Density is the amount of matter in a given space, typically expressed as mass per unit volume.

Front

What two types of measurements make up density?

Back

Density is calculated using mass and volume.

Front

Why does oil float on top of water in an oil spill?

Back

Oil is less dense than water.

Front

How do you express 0.00075 in scientific notation?

Back

0.00075 is expressed as 7.5 x 10^-4.

Front

Convert 6.79 x 10^4 back to standard form.

Back

6.79 x 10^4 is 67,900.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.

Front

If an object has a mass of 50 grams and a volume of 10 cm³, what is its density?

Back

Density = 50 grams / 10 cm³ = 5 g/cm³.

Front

What happens to the density of a substance when it is heated?

Back

Generally, the density decreases when a substance is heated because its volume increases.

Front

What is the unit of density in the metric system?

Back

The unit of density is typically grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³).

Front

How does the density of water compare to that of ice?

Back

Ice is less dense than water, which is why it floats.