Endothermic Reaction

Zelle and I did our reaction today. We made a video...but someone kindly deleted it for us! haha! O well...we will just explain it.


Our experiment called for 25ml of acetic acid and 15g of baking soda.... we didn't have that much acid, so we divided everything by 5 so we didn't have to use as much, but it was still balanced.  Since we didn't use as much ingredients as the experiment called for, our results weren't very dramatic, but it still worked.  The temperature went down 3-4 degrees Celsius.... and ended up being at about 18 degrees Celsius.


When we mixed everything together, we saw a few bubbles forming (a sign of a chemical reaction) and then it got colder.  Again, there would have been more bubbles if we used as much ingredients as the experiment called for.  Also, the acid smelled TERRIBLE!!!!!  You would have seen it on our video, but apparently someone thought theirs was better :)  hahaha.... just kidding!!!!

That is about it.... have a good weekend!!

Endothermic Reaction

Hey everybody!!  Zelle and I are doing endothermic reactions for Test 6.  We will have a video posted soon of our actual experiment and all of our materials and results. 


Endothermic: "within-heating" --> describes a process or reaction in which the system absorbs energy from the surroundings in the form of heat (takes in heat and doesn't produce it... so it is a cold reaction)


Materials

~ 25 ml of acetic acid
~15 g of baking soda
~ a styrofoam cup
~ a thermometer
~ stirring rod