Density and Graphing!

Density and graphing today! Woohoo!!!

Density is one of the most important properties of matter.

POPULATION DENSITY
Population density is the number of people in a given area. The equation for population density is:


MASS DENSITY
The density of an object is its mass divided by volume.

GRAPHING
There are five important things that we must include in a graph; a labelled axis, an appropriate scale, a title, data points, and a line of best fit (do not connect the dots!) are all required. The independent variable goes on the x-axis. The dependent variable goes on the y-axis.

It is important to remember that when plotting graphs, plot the data on 3/4 of the graph. In other words, use your space wisely.
 

Step by Step Instructions on drawing a graph:

http://chemed.chem.purdue.edu/genchem/lab/datareports/graphpap.html


There are three things that we can do with a graph. First, we can read the graph. Second, we can find the slope (rise/run). Third, we can find the area of the graph.

How to Draw a Graph and the Line of Best Fit:


 

Next class, atomic theories!