Elizabeth Lee James Poland CHEM 104A 21 September 2014 Discussion and Conclusion of Experiment #4: States of Matter Sleuth Discussion The results of this experiment enabled the experimenter to determine the identity of an unknown salt (#3) using ion-exchange chromatography by analyzing the inorganic salts of the unknown salt, which can be examined by acid-base titration using ion-exchange resin. The stationary phase is made up of acid groups which will attach to the resin, which is then rinsed down the column with water. The mobile phase contains the inorganic salt dissolved in a solvent, which is then added to the column. As it goes down the column, an exchange of H+ ions and cations occur. The solution collected at the bottom of the column contains the acid form of the inorganic salt.…
The experiment was to observe if the difference in the amount of acid added affected the mass of the curd by either increasing or decreasing the…
We measured the mass of the grains and polymers. The grain's mass was 2.1 grams after we subtracted the Dixie cup. The polymer's mass was over 210 grams because of the mixture. To construct the experiment we carefully cut open the diaper over a ziploc bag and carefully collected the grains into a corner of the bag avoiding breathing them in. We then cut the corner of the grains into an ice cream cone shaped and dumped them into a Dixie cup to be measured.…
In the nine unknown solutions experiment there was nine solutions that were labeled with just numbers from one to nine and all of these one to nine solutions were mixed together randomly to see what kind of reaction it would form. There were mostly no reactions being formed but the reactions that were soluble and insoluble formed different colors of precipitate. The main importance in finding the nine unknown solutions was to prevent any inaccuracies that might form when there is a chemical compound forming. This experiment was done to determine the identity of the nine unknown solutions like color (physical trait), and chemical characteristics.…
A list was made for the purpose of knowing which unknown substances were mixed…
Materials. Numerous substances in the experiment were used. The most frequently used was the unknown due to the need to test its physical and chemical qualities. When a solution of the unknown was made, 1.000 g of the unknown and 1.0 mL of water was used to make it. To test for the possible ions, 1.0 mL of silver nitrate and 1.0 mL of nitric acid were used for the ion test.…
The control group was Brawny brand. The experimental group was Bounty, White Cloud, Homestore, Walmart Brand, and Sparkle. First, move one of the brand’s a paper towel sheets to a balance to see what the mass is. Then, take the dropper and drop water on the flat paper towel…
CONCLUSION: Two weeks ago, Soundings XVI performed Lab Experiment Number Two. Lab Experiment Number Two was similar to the previous, Lab Experiment Number One. The prompt was to compare the results of pennies dropped in water, versus the result of pennies being dropped into milk, both at 100 mL. The main purpose of this lab was to further discuss more scientific parts of this lab, such as the surface tension when the cylinder was close to overflowing for both the milk and water. Before performing this lab, my group and I created a hypothesis to reflect upon and to state what we believed would dictate the results.…
Which one of the fo llowing is often easily separated into its components by simple techniques such l) as filtering or decanting? A) homogeneous mixture B) solutions 0 heterogeneous mixture D) elements E) compounds 2) An clement cannot 2) A) be part of a heterogeneous mixture Ji,) be a pure substance is corrccl for ___ _ 19) A) elements B) homogeneous mixtures Ohcterogeneous mixtures D) compounds 20) Which of the fo llowing is an example of a lieterogeneous mixture?…
This was done by documenting the state of matter, its smell using the wafting technique, color, and structure. Following this the solubility test was conducted. This was completed by taking 1g of the unknown compound and placing it within 100mL of distilled water inside a 150mL beaker. Stirring the solution using a glass rod, observations of the unknown compound dissolving (or not) after 10 seconds are recorded. Next follows the Anion Tests in which a chloride ion test and a sulfate test were conducted.…
“Classifying Chemical Reactions - Lab Report” I - Introduction - Chemistry is the study of the composition, structure, properties and change of matter. In chemistry, chemical and physical changes are used to help scientists understand how different substances react given various circumstances. A chemical change is any change resulting in the formation of a new chemical substance(s). A physical property is any change that does not involve the chemical makeup of a substance at all. In total there are five (5) chemical reactions.…
Elements Tests A B C D W X Y Z Hcl 5 drops of Hcl acid solution combined with Element A resulted in the dark color solid sits at the bottom of a pure clear substance 5 drops of Hcl acid solution combined with Element B and a bubbling and fizzing reaction started to occur 5 drops of Hcl acid solution combined with Element C and there were bubbles forming in the reaction 5 drops of Hcl acid solution combined with Element D and a dark color sits at the bottom of a pure clear substance 5 drops of Hcl acid solution were completely absorbed by Element W 5 drops of Hcl acid solution were not absorbed by Element X and there was no apparent reaction 5 drops of Hcl acid solution was not absorbed by Element Y and resulted in no apparent reaction 5…
“The Law of Conservation of Mass states that matter can be changed from one form into another, mixtures can be separated or made, and pure substances can be decomposed, but the total amount of mass remains constant.” (University Of Wisconsin) The data the was found from our lab shows that the data is not consistent to the Law of Conservation of Mass because our results showed an increase in mass. To start the lab, .7 grams of copper was measured out and at the end, the total amount of copper was .73 grams.…
Introduction Density measures the volume that a given amount of mass takes up. Usually, density has grams per unit volume as a unit. To find the density of an object, the object has to be measured and its mass has to be divided by its volume. Often times, density is used to identify substances, since different elements have specific densities. This experiment is made up of two sections; the first section measures the density of water and the density of an unknown substance.…
Slime is made by mixing together borax, glue, and water. Depending on the amount of borax added to the mixture will determine the density of the slime. For our experiment in class the independent variable was the borax. The dependent variable was slime. The control group was glue.…