The purpose of this lab is to practice different scientific methods, practice making different observations, and observe chemical and physical changes. What we did was measure out 4 grams of the powder and same with the little ball shaped chemicals that were solid. What happened in this experiment was when you put the liquid chemical called the acid indicator in the different types joined and formed a gas type substance. And our uncertainty was low, we had no idea if we were doing the lab right and if we were going to get the right results but we had it in the bag. We had learned new things like how to make a reaction, gas, chemical, and burn something without a flame. We learned that if we added more sodium it got more hotter, that’s one thing