Mass, Volume, & Density

Have you ever wondered how to measure the mass, volume, and density of liquids and different types of solids? If so, then you are about to find out! Just follow these simple steps and you will be able to determine the mass, volume, and density of almost every object!

**How To Measure Mass, Volume, & Density**

Measuring the Volume of a Liquid

Step 1: Gather the liquid you want to measure and a graduated cylinder.

Step 2: Pour the liquid into the graduated cylinder. Don't fill it up all the way!

Step 3: Place the graduated cylinder on a flat surface.

Step 4: Read the meniscus at eye level to get the most accurate volume.

The volume of the liquid is the number in mL that matches up with the bottom of the meniscus.

Measuring the Volume of a Rectangular Solid

Step 1: Gather a rectangular solid (e.g. a wooden block), a ruler, and a calculator.

Step 2: Place the object on a flat surface and measure the length, width, and height of the object with the ruler.

Step 3: Use the formula

Volume=Length x Width x Height to calculate the volume of the object.

You now have the volume of the rectangular solid!

Measuring the Volume of a Small, Irregular solid

Step 1: Gather a small irregular solid (e.g. a pebble), and a graduated cylinder.

Step 2: Place the graduated cylinder on a flat surface.

Step 3: Pour some water into the graduated cylinder and read the meniscus at eye level. Record the volume of the water.

Step 4: Drop the object into the graduated cylinder and try not to make a splash! If the object floats, get a long object (e.g. a pencil) and push the object down, remember not let go!

Step 5: Read the new meniscus at eye level and record it.

Step 6: Subtract the volume of the water from the volume of the water with the object it in it. This is called Volume by Displacement.

The number that you get from subtracting is the volume of the small, irregular solid.

Measuring the Volume of a Large, irregular Solid

Step 1: Gather a large, irregular solid (e.g. a large rock), an overflow can, and a graduated cylinder.

Step 2: Fill the overflow can with water and place it on the edge of a sink, so the water can pour out of the spout on the can.

Step 3: When water stops coming out of the overflow can, place a graduated cylinder underneath the spout of the overflow can.

Step 4: Put the object in the overflow can and try not to splash! Catch the water that comes out in the graduated cylinder.

This is called Volume by Overflow.

Step 5: Place the graduated cylinder on a flat surface and read the meniscus at eye level.

You now have the volume of the large, irregular solid!

Determining the Density of an object

The only way to find the density of an object is to use the formula Density=Mass/Volume. To use this formula you need to know the mass and volume of the object, and you can find that by following the steps I showed you.

Once you have the mass and volume, fill in the formula, calculate the density of the object, and you are done!

Measuring the Mass of a solid

Step 1: Gather the object you want to measure and an electronic mass balance.

Step 2: Make sure the object weighs below 200g, and then place it on the balance.

The mass of the solid is the number that appears on the balance.

Measuring the Mass

of a Liquid

Step 1: Gather the liquid you want to measure, a beaker, and an electronic mass balance.

Step 2: Put the beaker on the electronic mass balance and press the "tare" button. This will make the numbers on the balance reset.

Step 3: Carefully pour the liquid into the beaker. Don't fill the beaker to the top or the liquid could spill onto the balance!

The numbers shown on the balance is the mass of the liquid.

That is how you measure the Mass, Volume & Density of an object!