Chemical reaction

Group 12 Topic: Balloon Race (Reaction vs. Temperature) Due Date: 6 October 2017 Science Fair Assignment (2) Background Research The topic is Balloon Race (Reaction vs. Temperature). In this experiment, the scientists will be analyzing on whether temperature affects the rate of a gas producing reaction. The independent variable would be the temperature of water in degrees Fahrenheit, while the dependent variable is the rate of reaction which is caused by the rate of carbon dioxide

molecular gastronomy, spherification, chemical reactions, and solutions. Molecular gastronomy is the area of food science that explores how to make these spheres, as well as other ways ingredients in our food are physically and chemically changed (Rowland). Molecular gastronomy looks at how molecules in our food change (Rowland). When you make dishes with pure compounds, it is difficult. Another way is to go back

Bromination of trans- Stilbene to form 1,2- Dibromo- 1,2-diphenylethane Abstract 1,2-dibromo-1,2-diphenylethane was produced by the bromination of trans-stilbene through the addition of hydrobromic acid (HBr) and hydrogen peroxide (H2O2). This experiment was a greener bromination of stilbene because bromine was generated in situ and ethanol was used as the solvent. The melting point (243.30°C), mass (.427g), and percent yield (45.54) of the crystals were recorded. The FTIR

is responsible for this heat exchange? Looking at thermochemistry may give an explanation. Thermochemistry is a branch of chemistry focusing on heat. Specifically, it studies heat released or absorbed in a chemical reaction. 1 Reactions releasing heat are referred to as exothermic, while reactions absorbing heat are endothermic. 2 Calorimetry, used in thermochemistry is, “the science associated with determining the changes in energy of a system by measuring the heat exchanged with the

enzyme is a biological catalyst that can speed up a chemical reaction by lowering the activation energy. Typically the lower the activation energy the faster the reaction will be. It's made up of a plethora of different types of proteins that forms into a 3D like shape. Enzymes are very important to the human body, because it keeps the chemical activity that undergoes in our body at a low temperature. Enzymes need substates in order to have a reaction and be able to form a enzyme-substrate complex. To

in the presence of a catalyst, which would speed up the rate of reaction. In this reaction Glucose would react with water to produce Carbon Dioxide (CO2) and Water (H2O). Methylene blue was an indicator that turned blue as it reacted with the Oxygen in the water. In a perfect case scenario, the dissolved oxygen in the water would cause the Methylene blue to turn blue. As the reaction takes place, the oxygen is consumed in the reaction as glucose is oxidized to form carbon dioxide and water thus, turning

effect of Hydrochloric Acid volume with Sodium Thiosulphate on the reaction rate. Introduction: Research Question: How does changing the volume of Hydrochloric Acid on Sodium Thiosulphate effect the time taken for the ‘X’ Mark to dissapear? The rate of a chemical reaction is the time required for a given quantity of reactant to be changed to product. The unit of time may be seconds, minutes, hours, days or years. For a chemical reaction to occur it needs to have a collision, and it is affected by several

Enzymes play an important role in chemical reactions. Chemical transformations would take place at a profoundly slow rate if enzymes were to be absent (Madden, Fox, p. 41). When the enzymes work to speed up the reactions the reaction process does not deplete them though. There are factors that can change the activity rate for enzymes. Some of these factors include: the pH of the reaction system, the temperature of the reaction system, and the concentration comparisons of the substrate and enzyme

Biology Enzymes Coursework Prediction: I think that the enzyme will work best at 45.c to 50.c I think this because that optimum temperature for most natural enzymes is 40.c but his is a chemical enzyme so it will work best a little higher. If this temp is exceeded then I think that it will take longer to work because it will not be at the optimum temp, or it will not work at all because it has become denatured. An enzyme cannot recover from this

Sam Rolfes Chemical or Physical changes August 31, 2015 Purpose Identify if it is a chemical or physical change Safety Avoid inhaling any dusts Clean and dry test tubes Don’t inhale fumes Make sure to wash down all chemicals Don’t drink the liquids Prelab Questions 1. Identify the following as either chemical or physical: a. Striking a match - C b.Food spoiling - C c. Breaking a glass - P d. Mowing the grass - P e.Leaves decaying - C f. Boiling water - P 2. In your own words, state the Law