Friday, November 8, 2013

Salt & sugar lab

This week, we did a lab which involved salt, sugar, and fire. First we would get some sugar and salt and put them in separate cups. We then got test tubes to put the sugar in. We then put the test tube over the Bunsen burner with the sugar in it. The sugar melted and turned into a dark liquid. We then put salt into a test tube and then put that over the fire, and nothing happened. So it explains that sugar can be melted and salt cannot.

Friday, November 1, 2013

Periodic table graph trend

Lately we have been learning about the periodic table. This week we were to plot the periodic table on a line graph. There are a few periodic groups and every one have a certain level if we were to line graph it. When I observe the graph we made, i see that the line on the graph is constantly going up and down the graph. The lowest level on the graph is 60, and there are 38 dots on the graph representing the substances that are on the periodic table. The reason why the trend of the graph is so wild is because it changes so frequently because of the electron affinity, ionization energy, atomic radius,and ionic radius. That is why each group is so different on the graph.