During the explosion not only are gases produced quickly, but they are also hot, and they expand rapidly, according to Charles’ Law, which states that as the temperature of enclosed gas increases, the volume increases, if the pressure is consistent(Antonis, K. 2010). The chemical reaction the firework puts off is when [a]toms, as well as molecules, come together to form larger molecules, and larger molecules break up(Trefil, 2014). The chemical reaction also depends on the color of the firework. How do Chemists make the colors for Fireworks? When scientists make the different colors, each color has its own element.
OBSERVATIONS: Data Table 1: Reactions of elements after been burned. | Metallic Element | Observations | Sodium ChlorideNaCl | | Potassium ChlorideKCl | | Calcium ChlorideCaCl2 | | Barium ChlorideBaCl2 | | Strontium ChlorideSrCl2 | | Copper (II) ChlorideCuCl2 | | Lithium ChlorideLiCl | | The flame color of SrCl2 is crimson. The flame color of SrCl2 is crimson. The light’s color of CuCl2 is green. But there’s a combination between Green and blue but the color that predominate is Green.
When dynamite explodes, it causes an exothermic reaction. This means that the reaction causes light and heat to be produced. When heat or pressure is added to the product, it explodes and produces water, nitrogen and oxygen. The explosion of nitroglycerin can be classified as a decomposition reaction. Nitroglycerin breaks down after being pressurized or exposed to heat.
The powder that remains will have lost some mass as smoke, but this resultant mass is still more than the mass of the metal that was burnt. Burning magnesium in air is a chemical reaction called oxidation and the compound produced is totally different from the two elements that have been combined. Each element is made up of atoms and the compound is made up of two elements joined together. The chemical formula for the reaction is below; 2Mg + O2 --> 2MgO Magnesium + Oxygen -> Magnesium Oxide The equation above shows that magnesium and oxygen have combined as the product of the reaction, their mass of each element has also combined in the reaction. Magnesium is a very reactive metal which when heated burns with a white flame.
The Magnesium strip dissolved in the process and the test tube got hotter. gas test observations: The Hydrogen burned up in the test tube causing a loud pop|The final products were Hydrogen gas and MgCl (a clear/transparent liquid).| |Mg|A shiny opaque metal. -Grey/metallic||| Discussion Questions 1. Identify the reaction in procedure steps 3 and 5 as endothermic or exothermic. Explain why.
Molarity is the number of moles in a compound in a solution over the number of liter in the solution. In titration, solution of known quantity and concentration is enumerated to another solution of also known quantity and concentrations until an end point of combined solutions are reached. The end point is nothing really that fancy but rather an indicator of color change, which represents that the reaction is over. In the titration, the two substances exchange electrons, which can be called redox reaction. In redox reaction, one element or compound is reduced and gains electrons, while on the other hand, the other element or compound is oxidized and loses electrons.
Nuclear fusion and nuclear fission are two different types of energy-releasing reactions in which energy is released from high-powered atomic bonds between the particles within the nucleus. The main difference between these two processes is that fission is the splitting of an atom into two or more smaller ones while fusion is the fusing of two or more smaller atoms into a larger one. Nuclear fission is a class of nuclear change. Nuclear fission occurs when a very heavy nucleus splits into two smaller nuclei, each more stable than the original nucleus. Most fission reactions happen artificially by bombarding nuclei with neutrons.
The Flame Test Lab Objective- Given Materials- Given Procedure- Given Results- Element Color Sr- Red Orange Ba- Yellow Orange Na- Bright Orange Li- Hot Pink Ca- Orange Cu- Green, Aqua, Blue Conclusion Questions- 1. The process by which the colored flame is produced is the release of light energy. When heat energy is added to an element, its electrons move from their ground state, to an excited state. This means the element's electrons are jumping from one orbital to another. When the heat is released, the electron then jumps back into its ground state, or back into its original orbital.
Date : 18/02/2013 Micro-scale Determination of the Activation Energy of the Hydrogen Peroxide-Iodide Reaction Abstract: The purpose of this experiment was to determine the rate at which hydrogen peroxide decomposes to water and oxygen with the use of an iodide catalyst. Using the logarithmic form of the Arrhenius equation: ln k’ = -Ea/RT + ln A . the activation energy was determined to be 52.3 kJ/mol. It was also found that increasing the temperature also increased the rate, as there was more energy available to increase the speed of the reaction. Introduction: The purpose of this experiment was to determine the Activation Energy of the Hydrogen Peroxide-Iodide reaction.
The neutralization, reduction, or removal of fission products and subsequently their associated negative effects will allow for higher burnup in nuclear reactors. Source and Quantity of Fission Products The total quantity of fission products present in the fuel can be determined by a direct mass balance relating the rate of production by fission (requires that the fission product yield be known) to the rate of loss by radioactive decay. In order to determine the overall fission product yield the contribution from beta decaying precursors to the independent yield of the isotopes must be accounted for. The independent fission yield (iy) is the