For chemistry we were supposed to prepare a lesson about science experiments and include what the science was behind the experiments.The lesson I did with my group was about gastronomy. Something I found interesting is that this type of food science is actually being used in several restaurants worldwide.
We included a little bit of background about it and how it’s used today so the audience can get an idea of what it is. For our first experiment we made powder nutella, we used nutella and maltodextrin powder. The maltodextrin powder made the creamy nutella into a powder. They ate the powder nutella and it turned back into its original creamy substance. For the second experiment we made edible helium balloons, using a edible taffy mixture, pipe and a helium tank. We put one end of the pipe into the hole of the tank and the other end of the pipe was covered in the taffy mixture we inflated the balloon with helium inside. Once the audience ate the balloon it had the same effect as sucking the helium from a balloon it made your voice high pitched. Something that I found challenging was on the day of the presentation it was hard for my group and I to keep everyone quiet.
Physical Change
Physical Change: Any change that occurs without adjusting the chemical structure of a substance. Physical changes are the change of color, shape, state of matter. Chemical Change: the rearrangement of atoms of one or more substances and a change in their chemical gears or formation it results of a new substance. Examples of physical changes are a burning a candle, ice melting, and boiling water. Examples of chemical changes are burning wood, digesting food, baking a cake. The biggest challenge with this concept was identifying which was which.
Hydrophobic vs. Hydrophilic
Hydrophobic: Water hating. Hydrophilic: water loving. Examples of Hydrophobic substances are fats, oils, anything that has a greasy substance. Examples of Hydrophilic anything that has a polar charge. The biggest challenge with this concept was knowing what substances where hydrophilic and hydrophobic.
Heat vs. Temperature
Heat: A type of energy involving movement of atoms and molecules in any way. Temperature: The degree of hotness or coldness of anything. Examples of heat are the sun, stove, and automobile fuels (gasoline). There are different types of energy such as light energy, heat energy, mechanical energy etc. The biggest challenge with this concept was at the beginning I thought they were the same thing so learning that they are different was difficult.
Animal Testing
Animal Testing: the use of animals in experiments for the purpose of handling the factor(s) that affect the behavior or biological system of humans. Examples of the animals they test on are mice, rabbits, rats, monkeys, and many more. This concept was challenging for me because I don't think testing on animals is the solution they are not always accurate and the animals don't have a voice they are forced into doing those experiments.
Combustion Reactions
Combustion Reaction: Combustion: means burning, or a chemical change that makes heat and light. Any reaction that involves burning something is a combustion reaction. For example a campfire, burning coal, cooking your food. The biggest challenge of this concept was the precautions we had to have during the experiments because if some accident occurred it would have ended bad.