Periodic Trends

For this science worksheet, students examine the graph with elements in order to differentiate atomic mass and categorizing the content.

Take the periodic table into the digital age with QR codes that take the scanner to an audio recording about each element from the Royal Society of Chemistry. Enlarge the image, then use a smartphone or tablet to scan the code for an...

In this chemistry worksheet, learners examine the periodic table and how it is used in the context of interpreting compounds and their structure.

The University of the State of New York has designed a series of exams to be given to high schoolers. This chemistry exam is one of the most comprehensive and well-written that you will ever find. It consists of 84 questions in a variety...

The 2006 version of the Regents High School Exam is just as thorough as the rest of them! Assess chemistry learners on an entire year's curriculum when they take this thirteen page test. 

If your pupils think Um is the element of confusion, this presentation on period trends can only help. It covers the patterns for atomic radii, ionization energy, and electronegativity across a period and down a group. 

An explanation of electron affinity trends across the second period of the Periodic Table. Elements that do not match the trend are identified. [7:28]

Learn about the relationship between elements and atoms in this video lecture. Understand the basics of how protons, electrons, and neutrons make up an atom and how elements relate to atoms. [13:09]

Investigate trends in common oxidation states for main group elements with this video. [8:34]

Did you know that the first time someone isolated a pure element was when Henning Brand boiled down his own urine in 1669 and unknowingly discovered phosphorus? The history of our current periodic table of elements is entertainingly...