Physical Science with Chemicals!

Not all molecules can be together. They repel each other. Electrons have a negative charge. If you had a particle with more electrons than protons then you will get an ion.  Particles like this will repel each other because a negative charge repels another negative charge. 

Here is an image:

Next post we do will be a video of us doing an experiment demonstrating molecules that don't go together.  

Here is the step by step process of the experiment we will be doing next post we blog:  http://www.sciencekids.co.nz/experiments/oilandwater.html