Periodic trends
http://dl.clackamas.cc.or.us/ch104-06/periodic.htm
As you compare elements from left to right across the periodic table, you will notice a trend or regular change in a number of properties, easy to navigate, clear data.
http://chemmac1.usc.edu/java/ptable/ptable.html
This site shows some of the details of periodic trends using an interactive periodic table applet, which open another window, amazing tool for visualize learners.
http://www.sciencegeek.net/Chemistry/taters/Unit2PeriodicTrends.htm
Review of Periodic Trends. You will need to periodic table to complete this activity. Choose the correct answer for each question. Show all questions
http://www.bbc.co.uk/schools/gcsebitesize/chemistry/periodictableandgroups/grouptrendsrev1.shtml
Trends in reactivity through the periodic table are linked to atoms' electronic structures - in particular, to how easily electrons can be lost or gained.