This is a PowerPoint that covers the different factors that affect the rate of reactions. Perfect add-in for your Chemistry unit! I explain it using the "collision theory", meaning the things that affect how much molecules collide is what changes the speed. The factors I mention are concentration, temperature, pressure, surface area, and agitation.
This PowerPoint contains animations that demonstrate the differences in the speed of reactions. Due to the nature of PowerPoint animations, these can sometimes translate funny in the download process. If you need to move them around, as a whole, use your cursor to draw a box around them - this will select everything in the box and allow you to move all the objects and their animation paths.
The PowerPoint is 16 slides long and student notes are included. The notes are in the form of a fill-in the blank PowerPoint. These can be printed as "handouts", copied, and given to students to write on. I recommend doing 4 slides per horizontal page for large slides or 6 slides per vertical page for smaller ones. (These options are found in the "print preview" and "print" options) I have some classes that can't write in the small spaces of the 6 slide page and some that can, so I have had to use it both ways. It could also be filled in electronically by students. This should be able to be completed in one class period in most situations, dependent on your classes.
*These files are not editable.
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* NGSS is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards was involved in the production of, and does not endorse, this product.
*These materials were formerly under the blanket unit of "chemical reactions" but have since been changed to simply "rate of reactions" because many examples represent, and all principles also apply to, physical reactions. This is a common student misconception that we do not want to perpetuate. :)