Activity 4 of this module determines: Which model best supports our observations? This activity reviews the evidence gathered in this investigation and considers how that evidence informs your model of matter. A timeline of the history...

Learn to re-model your lesson plans to include room for critical thought and higher levels of learning. Re-modeled lessons cite specific critical thinking strategies. Wonderful examples include " Writing Haiku," "Myths," "Sojourner...

Short slide show provides basic information about drawing Lewis dot structures for covalent compounds. Starts with anatomy of the atom, and then shows the relationship between atomic particles and the Periodic Table of Elements. Offers...

A tutorial that explores the concepts of heat and temperature, the transfer of energy between substances, the relationship of temperature and the movement of atom, and thermal radiation. The tutorial includes animations, interactive...

Students construct a model of chemical reactions involving energy and electrostatic interactions and compare reactions and changes in energy through the following activities. Activity 1 What energy changes occur during an explosion?...

This lesson explains what is represented by the atomic mass, and how it varies from one element to the next. Module includes a slideshow and a quiz.

A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...

This module develops atomic-level causal models to explain observations of electrostatic interactions via the following activities: Activity 1. What is the effect of changing the composition of an atom? Activity 2. How do objects become...