Chemical Changes

Today we looked at chemical changes and how they are affected by temperature. I modeled 2 chemical changes first: a candle being burned that gave off heat and light and then a chemical reaction that caused gas bubbles. We then did a little reading and learned that chemical changes are when a new type of matter is formed and you cannot change it back to its original matter. Some examples we listed were: burning, cooking, baking, eating, rusting, rotting/molding. There is evidence that lets us know that a chemical change has taken place--gives off heat and light, a change in color, a new smell, and a formation of a solid (like the yummy cake we made). Students did GREAT!!! They were able to tell me what a chemical change was and some examples. For the end, we made a chocolate cake. Baking the cake and eating the cake were both a chemical change.

For our experiment that we did today, we put fizzy tablets into water and observed the chemical change. Students got a real kick out wearing the glasses! Some told me that they really felt like scientists today!!