pascuzzos

Drinking Water Contamination Kit



Determination of a Hydrate



DeteMendellev: Predicting the Future? October 27th 2016 purpose: To predict the density of Germanium by determining the denisty of the metals in the same column on the periodic table.

Data/Conclusions: Silicon:
 * Trial || Mass(g) || Volume Change (mL) || Density (g/mL) || Average Density (g/mL) ||
 * 1 || 2.079g || 1.0mL || 2.07g/mL ||  ||
 * 2 || 4.39g || 2.0mL || 2.20g/mL || 2.18g/mL ||
 * 3 || 6.80g || 3.0mL || 2.27g/mL ||  ||

Tin: Lead:
 * Trial || Mass(g) || Volume Change (mL) || Density (g/mL) || Average Density (g/mL) ||
 * 1 || 6.15g || 1.0mL || 6.15g/mL ||  ||
 * 2 || 13.35g || 2.0mL || 6.67g/mL || 6.288g/mL ||
 * 3 || 19.12g || 3.0mL || 6.040g/mL ||  ||
 * Trial || Mass(g) || Volume Change (mL) || Density (g/mL) || Average Density (g/mL) ||
 * 1 || 5.90g || 1.0mL || 5.80g/mL ||  ||
 * 2 || 16.19g || 2.0mL || 8.095g/mL || 7.662g/mL ||
 * 3 || 27.27g || 3.0mL || 9.090 g/mL ||  ||



our prediction for the density of Germanium is 5.145g/mL. our pridiction is very close to the actually denisty of Germanium. the graph shows that as the periods go down, the average density increses, this is how we know that the density for Germanium is more dense then Silicon, but less dense then Tin and Lead. by using the trend or correlation of thr graph, we were able to predict the density of Germanium.

Lavoisier a liar? Can matter really neither be created or destroyed? September 30th 2016 Purpose: the purpose of this lab is to prove Lavoisier's theory that matter is never created nor destroyed during a reaction, in other words, matter is conserved.

Data/Calculations: before the reaction: After water is boiled off and beakers are cool: total mass of compounds before reaction: 1.9587g total mass of compounds after the reaction: 2.64g
 * Reactants || Mass(g) ||
 * Mass of empty beaker A || 47.73g ||
 * Mass of compound placed in breaker A || .7515g ||
 * Mass of empty beaker B || 8.93g ||
 * Mass of compound placed in beaker B || 1.207g ||
 * total mass of compounds placed in beaker A & B || 1.9587g ||
 * Mass of clean filter paper || .84g ||
 * products || Mass(g) ||
 * Mass of beaker A & filter with compound || 30..44g ||
 * Mass of compound recovered in breaker A || 1.61g ||
 * Mass of breaker B + compound || 30.493g ||
 * Mass of recovered compound in breaker B || 1.043g ||
 * total mass of both A&B compounds || 2.64g ||

conclusions: Our calculations show that Lavoisier's theory was not correct.The Theory states that matter is never created or destroyed in a reaction. In our reaction, matter was created. our data shows that the mass of compounds before the reaction was 1.9587g. After the reaction, the mass of compounds was 2.64g. our data could have been wrong because we had a 35% error. either way, our data shows an increase in mass after the reaction, proving Lavoisier's theory wrong.

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