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DENSITY OF TWO LAB

Name______

Date______Period__

Background Density is a physical property which can be used to identify substances. Density is calculated by dividing the of an object by its . The volume of an object can be measured two ways, by physically measuring the dimensions of a regularly shaped object and calculating its volume or by determining the volume by displacement.

Purpose: To find the densities of two different metals.

Hypothesis: -Predict which will be more dense and identify a metal based on its density.

Volume Mass of Mass of Volume Mass Volume Density of Water Cylinder Cylinder of Water of of of In & Water Water & & Metal Metal Metal Metal Cylinder (Before) Metal METAL A TRIALS 1 2 3 AVERAGE ------

METAL B TRIALS 1 2 3 AVERAGE ------

Calculations & Graph

1. Calculate the mass, volume, and density of Metal A and of Metal B. 2. Graph the compiled class data on one set of axes. 3. Find the slope of each line on the graph - Metal A and Metal B. 4. Write the slope on the graph.

Analysis Questions:

1. Compare the slope to the densities you calculated. 2. Use the chart below to help you identify Metal A and Metal B.

Metal Density

g/mL

Lithium 0.53

Aluminum 2.7

Zinc 7.1

Copper 8.9