Changes in Matter Summary Part I

Greetings,

 

This post is a summary (in two parts) of the topics covered in this section (Changes in Matter) of the blog, LearningChemistryEasily.blogspot.com . There has been an emphasis on chemical changes,which will be reflected in the summary. The remainder of this section, Changes in Matter, will focus on physical changes; those that only result in a change of the form of matter, not in the identity of matter. The blog will then continue with new discussions of a somewhat more advanced nature.

So, here now is the part I summary. When matter changes, we find a simple restructuring of molecules or ions (the molecules remaining unchanged) or a rearrangement (sometimes complete) of atoms and/or ions. We write a chemical equation as a shorthand way to describe a chemical reaction. The chemical equation shows the formulas and states of all reactants and products. Additionally, the equation may show the formula of a catalyst used and a required condition (such as heating). There are five commonly observed types of reactions; double displacement (include acid-base and precipitation reactions), single replacement (hydrogen-producing and metal plating), decomposition, combination/synthesis, and combustion. The following graphic is a summary of this discussion.

That's all for this post.  I'll be back soon with part 2 of the chemical changes summary!

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