The document appears to be a collection of images without any accompanying text or context. It includes 14 different images that appear to depict various scientific diagrams, figures, and photographs related to physics and chemistry concepts. However, without any text, the intent and key ideas behind this assembly of images cannot be determined within the constraints of a 3 sentence summary.

1. file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-11.jpeg

2. file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-6.jpeg
file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-5.jpeg

3. file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-7.jpeg file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-12.jpeg

4. file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-8.jpeg
file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-9.jpeg

5. file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-10.jpeg
file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres.jpeg
file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-1.jpeg
file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-2.jpeg

6. file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-13.jpeg
file:///home/pptfactory/temp/20120324230403/fisica%20e%20quimica/imgres-14.jpeg