Lexi was in need of a little assistance on her rocket. I think that she is doing an excellent job on her rocket. I didn't do to much because its her project, but I thought I could mention this.
My last attempt on this did work but didn't have a video so here you go. A Chemical Reaction is a process in which one or more substances change into one or more new substances.
Chemical Equation: An empirical representation of a reaction can be arranged Ex. NaCI + KBr---->KCI + NaB Read: Sodium Chloride reacts with Potassium Bromide to produce Potassium Chloride and Sodium Bromide Looking Beyond- Here is the equation for today's reaction you don't have to use this exact amount grams for the reaction to occur, but the percentages of these chemicals are needed so as long a you dialectal the percentages into 26% and 74% We will be performing a reaction in this experiment were we will be making and igniting a bottle rocket. A bottle rocket made very similar to a rocket engine with an additional skewer attacked to the side to hold it up. It is simply made to propel itself up with a sudden burst of thrust from a lit fuel of rocket fuel or black powder. Materials-
Launch prep
Looking Inwards- With my field test rocket motor I went outside with the others we each launched our own most didn't leave the ground, but might went up about ten feet from the ground a success. My one mistake was that I didn't record it I had a friend do that but they lost the video so here is a video of what basically happened Looking outwards-
I did this lab by myself mostly Andrew made the rocket fuel and Jenessa helped me with the hole for the fuse. I appreciate both them for their help. Looking Forward I want to continue doing rocket projects they are fun and exciting. For this lab were learning that we can use pennies to make simple batteries. The batteries have a voltage and put out amps. The voltage is the energy stored the battery and the amps is the flow of electrons. In our battery, we manipulate the flow of electrons to charge LED's. A battery needs to have 3 things in this order to work; an anode a cathode and an electrolyte.
Materials-
What Happened- Process- First we sanded down one side of the pennies so that the Zinc was exposed Then we cut small pieces of cardboard about the size of the pennies. We took the cardboard and soaked it in vinegar
We then stacked the materials a piece of tin foil at the bottom then the copper sided of a pennie , then a piece of the cardboard we repeated that four times will a pennie on the very top. Making sure the cardboard was not touching another peice of cardboard we put the leads of the LED's on the top of the pennie stake and the tin foil bottom. If done correctly the LED would turn on which it did for our group. We also wrapped the basic battery with electrical tape. Success For this experiment we made hydrophobic sand. Hydrophobic sand repels water due to its high solubility. To make hydrophobic sand is made by coating regular sand in a silicon based hydrophobic spray and mixed. This needs to be repeated 2 to 3 times. Then it will be left to dry after that if you pour water on it it will not get damp from absorbing the water. Key Concepts: Ionic Compounds - Form between Metals and Non-Metals, exchange of electrons creates oppositely charged ions, strong bounds, hydrophilic Covalent Compounds - Form between Non-Metals and Non-Metals, sharing of electrons, weaker bonds, hydrophobic. Cations - Positively charged ions Anions - Negatively charged ions Hydrophobic - Will not dissolve in water Hydrophilic - Dissolves in water Polarity - Difference of charge Solubility - How much something will dissolve something Materials:
When I did this with my group we dropped the sand in a beaker of water then pulled it out it was still dry. We also tried to dip some water on some sand, the water only stayed on top. The experiment was fun and I hope we can do something similar soon. Looking Beyond-
Water does not mix with oil because oil has a negative polarity and can not be dissolved by water. By mixing the silicon based hydrophobic spray with the sand repetitively the sand was covered by a oily hydrophobic water proof outer shell that repels water. Looking Inward- I did get my desired results I wanted. I think the fact that my group worked together well and didn't argue attributed to the result of this lab being a success. Collaboration Looking Outward- I worked with Mia, Anna, and D-Issac. We all worked well together no one complained, everyone I think found the lab interesting. Looking forward- If I was able to do this experiment again I think I could do it better. I would not mind who I would work with. I think I would try to make less and put it at the bottom of an empty bottle with layers of water and sand to see what would happen. I think would like to if I find time. Take aways- I learned there is a more in dept reason oil does not mix with water. |
Mario AlexanderI am a 10th grade Student at High Tech High. Archives
May 2015
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