Over the past unit we have learned about many things. The first thing that we learned about was relative mass. We learned what this is by doing a work sheet on it involving rice, beans and popcorn. I felt it was very straight forward work and easy enough to comprehend. It compared the weight of those objects and led us to discover that you can find the amount (or number) of something without counting them all out individually. The next thing we learned about was the Mole or 'Avogadro's number'. This number is 6.02x10^23, also known as a mole. To learn about what this is, we did a set of notes another worksheet that I thought was kind of cool. It helped me understand how massive a single mole really is. Molar mass was the third big thing that we learned about in this unit. We learned about this in class and it was fairly easy to understand. We also broke into small groups to help us practice finding the molar mass of things and converting the moles to particle numbers, which is much like the next thing we learned about, mole calculations. These are the conversions and we got lots of practice with them with worksheets and in group work. I liked doing this part because it made a lot of sense seeing all the moles and weights in grams in numbers. The mole lab was a project that applied what we learned to a real life situation. I liked this part as well because it was putting the calculations to a real world situation and we had to figure out  by ourselves how to do all the calculations worked. Percentage composition is something that was re-introduced into this unit. This is used to find out how much of an element is in a certain equation on compound. We learned how to do this in with in class notes and group work class. I am still struggling a bit with this concept but have most of it nailed down.