[2015] Samuel Weinzweig: Chem final project

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[2015] Samuel Weinzweig: Chem final project

Grade 11 Chemistry: Final Project

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During unit three we learned about moles and mass stoichiometry. We were given a lesson on how to use significant digits which are used in many courses including functions and physics. We were taught the difference between accuracy and precision using a bow and arrow as an example. We must be able to define terms including atomic number, isotope and stoichiometry. We learned how to calculate the molecular mass from a substance. We did a lesson explaining how to interconvert from moles to particles as well as what a mole is; which is 6.02 x 1023 particles of a substance. We can calculate the percentage of a specific element within a compound. We learned the empirical formula and how to use to shorten compound names, such as C6H6 would become CH. We learned how to calculate the number of moles or mass of a product or reactant. We were taught how to solve problems concerning actual/theoretical and percentage yield such as how to find the limiting reactant in a chemical equation, which is the reactant that is completely used up in the reaction.

During this unit we have leaned the proper way to handle dangerous substances and chemicals through the use of MSDS's. This taught us to have a stronger understanding of how to safely handle chemicals that we use in our everyday lives such as bleach. We have gone through substances and how to find their charges and masses. We have learned how to scientifically name chemical compounds and convert the names into equations. We have looked at the components of the periodic table as well as how to recognize elements and their properties. This unit taught us how to draw Lewis dot diagrams correctly and define the parts of them. We began to learn the use of the electronegativity chart and its uses.

In the second unit we learned how to distinguish the reactions of elements with oxygen acids and water. We were taught how to transform chemical equations from skeletal to word and to recognize if that equation is a synthesis, decomposition, single or double displacement or a combustion. We saw the effects of combustion reaction in the creation of fire and the compounds that emerge from it such as carbon dioxide.

Unit 4:Gases...

Unit 2:Chemical Reactions

Unit 1:Matter...

Unit 3: Chemical Quantities


Unit 5 was specifically angled towards the knowledge of solutions and solubility. We learned how to classify solutions by the solubility of the solute in the solvent, as well as the different types of solutions with a dissolved solute; including, saturated, unsaturated and supersaturated solutions. These saturation levels can also be seen in fats, where saturated refers to the most amount of hydrogen's possible are bonded to the carbon chain of the fat molecules. We went through the factors effecting solubility, including the forces the act between particles. There were also factors affecting the rate of solubility such as agitation, temperature and exposed surface area. The factors the affect solubility went on into a new chart explaining the many different factors the can raise the solubility of a certain substance, including, ionic charge, pressure and intermolecular forces. We were taught to interpret solubility curves and predict their trends. With the solubility rules we were given we had to determine several aspects of a solution such as if it will form a precipitate. We were taught how to write word equations that have dissociated a solid that forms a precipitate. We solved problems including molarity and the dilution of solutions. We learned how to solve stoichiometry problems involving solutions volumes, masses and concentrations. Going through the types of water and how we are affecting the waters health we learned ways to better conserve our fresh water. Lastly we were taught about acids and bases, how to manipulate them and the theories associated with each one including the Arrhenius and Bronsted theories.

Unit 5:Solutions and Solubility


Throughout unit 4, we learned about gas stoichiometry and gases. We learned about the intermolecular forces, including hydrogen, dipole-dipole and London dispersion forces and how they influence a substance. Hydrogen bonding plays a big part in water as it attaches the hydrogen's to the oxygen's of separate molecules making water able to stay together when moving around. We were taught how to compare gases, solids and liquids. We learned about the kinetic molecular theory which included the relationship between temperature and average kinetic energy. We learned about Boyle's, Charles' and Gay-Lussac's laws, and how to use the equations to solve problems including gas law problems. We then learned about Avogadro's law and how to use it as well as the law of combining gas volumes. We were taught how to use the Ideal Gas Equation to solve problems for mass, molar mass, number of moles, temperature, pressure and volume. We learned how to use Dalton's law to find an individual amount of a gas in an area.


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