Density is a measure of how much matter is packed into a given volume. It is typically expressed as mass per unit volume, such as grams per cubic centimeter or kilograms per liter.
Density is calculated by dividing an object's mass by its volume. The formula for density is density = mass / volume.
Density is an important concept because it helps us understand the physical properties of different materials. It can also be used to identify unknown substances and determine their purity.
Density can be measured in a variety of units, but some of the most common ones include grams per cubic centimeter, kilograms per liter, and pounds per cubic inch.
An object with a higher density will sink in a fluid with a lower density, while an object with a lower density will float in a fluid with a higher density. This is why less dense objects, like wood, can float on top of more dense liquids, like water.