Heat and a Chemical Reaction

Hi, I am Jared, and welcome to Fun Science Demos. The big idea, in a chemical reaction, a new substance is created. Something else is going on there, temperature. Heat is actually created or taken away during that chemical reaction. How do we show you that? Our temperature probe. It is just a fancy thermometer, and I need a chemical reaction. I have two substances here to make that happen. I have already poured the vinegar in my beaker just to speed things along. So let us take the temperature of the vinegar. I have my temperature probe. I am going to put it in there. And now with this setup, all I do is collect the data. And what I am seeing here is a pretty much a flat red temperature line. It is reading 17 degrees Celsius, and it is pretty stable. It is pretty flat. Nothing is happening. So we said the big idea was that heat is either created or taken away during a chemical reaction. I need a chemical reaction. Bring in the baking soda. Let us watch our temperature line as we dump in the baking soda. Not the reaction, the temperature. Here we go. We have our reaction, but stir this around. And I can see the little red bulb line on my thermometer just start dropping down. What does that mean? Well, it means my temperature is getting colder. That heat is being taken away because of this chemical reaction. I can see the new substance, but when that new substance is created, it is taking heat away. My temperature probe proves it. Science is so cool. Thanks for watching. So where do we get the temperature probe? This temperature probe is actually called GoTemp, and it is made by a company called Vernier. It is a great company that offers all kinds of probes for teachers and schools to use in science and any application. We have linked to them below this video. Check them out.