Friday, May 12, 2017

What is the difference between a compound and a mixture?

When it comes to compounds and mixtures, there is one MAJOR difference when it comes to what makes them different, and it is that a compound is a CHEMICALLY combined substance. When you create a compound, you create a brand new substance that cannot be changed back. One example of this is water. One MOLECULE(notice how I did not say atom because water is not an element) of water has 2 hydrogen atoms and one oxygen atom. Those 2 substances chemically  combined to create a brand new substance, and when they did, they lost the properties/characteristics they had before. At room temperature, water is a liquid but hydrogen and oxygen are gases. They lost that quality when they became water. Now mixtures on the other hand are NOT chemically combined, and they are only mixed evenly throughout each other, and it would be relatively easy to bring back the old substances that they once were. Image result for sugar water solution One example of a mixture is sugar and water. When you mix them together. you're not creating a new substance, but merely mixing the 2 evenly thought each other. The sugar is the solute, the substance that is going to be dissolved and the water is the solvent, the substance doing the dissolving, The solute and the solvent are still the same substances, it is just that the atoms are all evenly dispersed within each other and in this situation, if you wanted to take the sugar out of the water all you need to do is wait for the water to evaporate, and you would be left with just the sugar. That is the difference between compounds and mixtures.

1 comment:

  1. Hey Kid,

    This is a pretty terrific example of a digital portfolio post! I love that you've clearly explained a concept that you learned in class. And you've done it really accurately, too! I also love that you have a picture to support your work and that everything (for the most part) is grammatically correct.

    Well done.

    The only suggestion that I think I would make is to include links to outside resources on compounds and mixtures, too. If you had included links, people -- including you -- could go and do more learning in the future without a lot of hard work.

    But overall, this is terrific. It can serve as a really useful study reminder for you in the future if you ever forget what compounds and mixtures are.

    Well done,
    Mr. F