**Density** is a measure of how compact the particles are in a substance. **Density** is defined as the mass per unit volume.

## What is Density

**Density** is a measure of how compact the particles are in a substance. **Density** is defined as the mass per unit volume. It is mathematically defined as mass divided by volume:** ρ = m/V**. The **density**(ρ) of a substance is the total **mass (m)** of that substance divided by the total **volume (V)** Of the substance.

## Density equation

To calculate **Density** we use this equation.

${\rho} = {\text{m} \over\text{V}}$

## Density demo

In this tutorial you will learn how to calculate the **density** of different substances.

## Chilled practice question

A block has a **mass** of 20 **Kg** and a **volume** of 0.25 **m ^{3}**. Calculate its

**density**.

## Frozen practice question

A barrel has a **mass** of 2500 **g **and a **density** of 2 **Kg/m ^{3}**. Calculate the barrels

**volume**.

## Science in context

**Density** is a measure of how compact the particles are in a substance.

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