Calculate the percentage of nitrogen, by mass, in Ca(NO3)2.
Chemistry 1: Chapter 1 Notes A highlight & bold= Definition *= conversion factor or unit/formula Bold= Examples & things you should know The Study of Chemistry Chemistry-The study of matter and the changes that matter undergoes. Matter- anything that has a mass and occupies space. The Scientific Method Step 1: Gather data from observations and experiments. An observation is something that you can see it can be a natural phenomenon and measured events. Example: The milk is lumpy so it has spoiled. (Natural phenomenon) There are 5 dogs with 4 legs because of a mutation (measured events).