## Density Calculations Worksheet Answer Key

Here is the answer key for a density calculations worksheet, which provides solutions to various problems related to density. Density is a fundamental concept in science that measures how much mass is contained in a given volume of a substance. By understanding the concept of density, we can determine the composition and properties of different materials.

### Problem 1

Calculate the density of an object that has a mass of 25 grams and a volume of 5 cubic centimeters.

Density = mass/volume = 25g/5cm^3 = 5 g/cm^3

### Problem 2

If a block of wood has a density of 0.7 g/cm^3 and a volume of 100 cm^3, what is its mass?

Mass = density x volume = 0.7 g/cm^3 x 100 cm^3 = 70 grams

### Problem 3

An unknown liquid has a mass of 36 grams and a volume of 12 cm^3. What is the density of the liquid?

Density = mass/volume = 36g/12cm^3 = 3 g/cm^3

### Problem 4

If a metal cube has a density of 8 g/cm^3 and a mass of 64 grams, what is its volume?

Volume = mass/density = 64g/8 g/cm^3 = 8 cm^3

### Problem 5

A piece of glass has a volume of 50 cm^3 and a density of 2.5 g/cm^3. What is its mass?

Mass = density x volume = 2.5 g/cm^3 x 50 cm^3 = 125 grams

### Problem 6

If a liquid has a mass of 90 grams and a density of 1.5 g/cm^3, what is its volume?

Volume = mass/density = 90g/1.5 g/cm^3 = 60 cm^3

### Problem 7

Calculate the density of a gas that has a mass of 0.2 grams and a volume of 0.1 cm^3.

Density = mass/volume = 0.2g/0.1cm^3 = 2 g/cm^3

These are just a few examples of density calculations that can be used to determine the physical properties of different materials. By mastering these calculations, you can gain a better understanding of how mass and volume are related, and how density can be used to identify and classify substances. Practice with more problems to enhance your skills in density calculations.