Chemical element

Comparing the masses, after and before reaction Aim To determine if mass is preserved in a chemical reaction conducted with vinegar and Sodium bicarbonate. Hypothesis: The mass of the flask and vinegar after the reaction will be less due to the fact that it is losing the gas which is being produced when the elements are mixed. However part B will be altered as the gas will be preserved inside the balloon. Apparatus  Balance  Sodium bicarbonate  Spatula  Measuring cylinder  2 conical…

This reaction is a combination reaction having two reactants combining to create a single product. The two reacants in the synthesis of ammonia reaction are two elements that everyone should be aqcuainted with -- elemental hydrogen (H2) and elemental nitrogen (N2). The resulting product in this reaction is the covalent compound, ammonia (NH3). Elemental hydrogen and elemental nitrogen is something one should be familiar…

possible to teach me something about the way the world worked, whether it was the way ingredients went together and interacted to form the texture of playdough or why adding baking soda to cake batter made it rise. either way, I was inundated with chemical reactions and techniques before I even knew there was a word for it and this inundation created an undeniable curiosity. Before entering high school, I had an undeterrable drive to know why, why something happened, why it worked, why it was…

This problem is important because when new elements and compounds are discovered, scientists can figure out their characteristics They do this using KMT (Kinetic Molecular Theory). KMT states that in the substance as a gas behaves like hard, spherical objects that are always in constant motion with…

III. RESULTS AND DISCUSSIONS: A. Characteristics of Aluminum-Graphite composites and the in-situ reaction To examine the reaction condition of carbon flakes and Al powders, 4 wt. % carbon flakes were added to Al powders. Fig. 1 shows the DSC plot obtained during heating and cooling of the green compact from room temperature to 750 0C and from 750 0C to room temperature at a heating/cooling rate of 3 0C /min under argon gas atmosphere. From the DSC heating curve it is evident that the total…

Purpose: We already knew that the chemical properties of each pure substance are not are not changed after separation in a mixture. The key to find a physical property that one part of the mixture does have but the parts of the mixture doesn’t. In magnetism a magnetically susceptible material is extracted from a mixture depending on a magnetic force. Filtration is separation of an insoluble solid and a liquid. Filtration depends on solubility, the filtrate is the one want to keep (liquid) and…

Discussion and Scientific Explanations The main goals of this experiment was to find the unknown compound, to discover the compounds chemical and physical properties and create two synthesis of the compound and compare the two compounds. We found out our compound was ionic because the compound dissolved in water, but not in toluene or acetone by using a solubility test, results on Table 1 of the group lab report. On page 59 of the Cooperative Chemistry Laboratory Manual is a chart on suggested…

results in more efficient conversions from chemical energy to electric energy. This technology can be implemented in a fuel cell. No extra energy needs to be wasted in assisting in the breaking and reformation of hydrogen bonds in the Cs3H(SeO4)2 crystal. This makes Phase II of the entire process sit in a suitable temperature range for a fuel cell to conduct electricity efficiently. In conclusion, the author writes about a consideration, where elements like Lead and Thallium may be…

First all you need is a smooth surface with a thin layer of catalyst, which is a chemical that initiates the production of the nanotubes. Then a mix of gasses is needed filled with carbon atoms leads to a special furnace. When you place the smooth surface and catalyst into the furnace it heats up the carbon gas at around 1500° F. The…

The goal of this experiment was to use chemistry to analyze an unknown compound and through testing its physical and chemical properties determine what unknown compound that was found in a landfill. This would benefit the Environmental Protection Agency because once they know what the substance was they could determine the best way to remove it from the landfill and if there were any potential safety hazards to beware of while handling the substance. This would prevent any accidents that may…