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Comparing the Densities of Various Objects

The purpose of this lab is to determine the density of various objects.

Density is a ratio of objects mass to volume. Density is a physical property and can be used to identify unknown objects. Less dense fluids float on more dense fluids if they do not mix. If the average density of an object is less than the fluid it will float, and if the object is denser than the fluid it will sink. Increasing pressure on an object decreases the volume of the object and therefore increases its density. Increasing the temperature of a substance decreases its density by increasing the volume of that substance.

Procedures-

* Determining the density of water

Step 1: Find the mass of a graduated cylinder by using an electronic scale.

Step2: Measure 20 mL of water into the graduated cylinder.

Step 3: Find the mass of the graduated cylinder with water using the electronic scale.

Step 4: Subtract the mass of the graduated cylinder with water, from the graduated cylinder without water, to find the mass of only the water.

Step 5: Find the density of the water by dividing the mass of the water from the volume of the water.

Step 6: Finally calculate percent error.

* Determining the density of a LARGE metallic cylinder

Step 1: Find the mass of the metallic cylinder using an electronic scale.

Step 2: Use the diameter given to find the radius by dividing the diameter in half.

Step 3: Measure the height using the centimeter side of a ruler.

Step 4: Find the volume by multiplying pie time your radius times your height.

Step 5: Find your density by dividing your mass from your volume.

Step 6: Finally calculate percent error.

* Determining the density of a SMALL metallic cylinder

Step 1: Find the mass of the metallic cylinder using an electronic scale.

Step 2: Use the diameter given to find the radius by dividing the diameter in half.

Step 3: Measure the height using the centimeter side of a ruler.

Step 4: Find the volume...

The purpose of this lab is to determine the density of various objects.

Density is a ratio of objects mass to volume. Density is a physical property and can be used to identify unknown objects. Less dense fluids float on more dense fluids if they do not mix. If the average density of an object is less than the fluid it will float, and if the object is denser than the fluid it will sink. Increasing pressure on an object decreases the volume of the object and therefore increases its density. Increasing the temperature of a substance decreases its density by increasing the volume of that substance.

Procedures-

* Determining the density of water

Step 1: Find the mass of a graduated cylinder by using an electronic scale.

Step2: Measure 20 mL of water into the graduated cylinder.

Step 3: Find the mass of the graduated cylinder with water using the electronic scale.

Step 4: Subtract the mass of the graduated cylinder with water, from the graduated cylinder without water, to find the mass of only the water.

Step 5: Find the density of the water by dividing the mass of the water from the volume of the water.

Step 6: Finally calculate percent error.

* Determining the density of a LARGE metallic cylinder

Step 1: Find the mass of the metallic cylinder using an electronic scale.

Step 2: Use the diameter given to find the radius by dividing the diameter in half.

Step 3: Measure the height using the centimeter side of a ruler.

Step 4: Find the volume by multiplying pie time your radius times your height.

Step 5: Find your density by dividing your mass from your volume.

Step 6: Finally calculate percent error.

* Determining the density of a SMALL metallic cylinder

Step 1: Find the mass of the metallic cylinder using an electronic scale.

Step 2: Use the diameter given to find the radius by dividing the diameter in half.

Step 3: Measure the height using the centimeter side of a ruler.

Step 4: Find the volume...

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