Copper Cycle Summary During the copper cycle lab, my partners and I performed a series of reactions on copper powder and observed the changes it underwent. For the first step, we mixed nitric acid and copper powder, and noticed that a yellowish brown gas emerged, along with effervescence. The red solid disappeared and became a blue liquid.…
Wear an apron, goggles, and closed toed shoes while performing the lab to protect from falling…
1. What safety equipment is available to you while you do your experiments? How far are they from you while you are conducting your experiments? This includes fire extinguishers, phones, showers, etc.…
When the sodium hydroxide was added, the solution got a lot darker and had a slight increase in viscosity. It also became heterogeneous as small blue specks were forming and sticking to the glass stirring rod. generating some heat- exothermic reaction, chemical reaction, copper hydroxide was converted to the copper oxide form. reduction…
Aside from merely being careful there are a number of ways you can protect yourself from contamination and or injury in the laboratory. The first would be to not have an open beverage and or food in the laboratory as this could easily become contaminated. Pens, pencils and all other materials should be kept out of your mouth. Avoid having long hair dangling in the work space as well as loose clothing, jewelry and wearing open toed shoes as these can all cause dangerous situations for injury. Always dispose of glass material in the appropriate labeled container, know all…
The purpose of this experiment is to help you sharpen your observational skills. The aluminum foil was found to rust in the water containing the dissolved Copper Chloride (CuCl₂) crystals. The results of the experiments were determined through close examination and observation of both qualitative and quantitative elements of the changes that occurred when a blue crystal, Copper Chloride, reacted with aluminum foil. In conclusion, aluminum foil is turned into copper when in contact with Copper Chloride (CuCl₂) granules.…
The purpose of the experiment is to cycle solid copper through a series of five reactions. At different stages of the cycle, copper was present in different forms. First reaction involves reaction between the copper and nitric acid, and copper changed from elemental state to an aqueous. The second reaction converted the aqueous Cu2+ into the solid copper (2) hydroxide. In the third reaction Cu(OH)2 decomposed into copper 2 oxide and water when heated. When solid CuO reacted with sulfuric acid, the copper returned to solution as an ion (Cu2+). The cycle of reactions was completed with the reaction where elemental copper was regenerated by Zn and Cu exchanging states in acidic solution.…
Answer: Safety in the lab is essential to not only the person doing the experiment but also anyone in the lab as well. If you know where the safety equipment is then if there is an accident the quicker you can respond.…
In well 4 there was a reaction between the solid copper pieces and the solution silver nitrate. The copper rusted and changed to a dusty black-grayish color. This change in color identifies that a chemical reaction just took place.…
In this experiment, I observed substances in their natural state, and recorded their apparent physical properties. I then tested the substances to determine how they react when their natural environments were altered. The pure substances were tested to see how they reacted with added Hydrochloric Acid, Dilute NaOH, heat, cold and hot water. I also was to determine if the substances were acidic or basic after being heated in water, by using litmus paper.…
To work with the chemicals used in the lab, it is required to wear safety goggles to protect your eyes from the fumes when working with the chemicals. It is also required to be cautious when working with the acids used in this lab because they can cause burning and irritation of the skin. Also, be cautious as to not inhale the chemicals. Because the glassware is glass, they may break and as such must be handled gently. All glassware should be inspected for cracks before starting the lab.…
Chemical changes are often accompanied by physical changes. Three that you should not see in this lab are changes in temperature, presence of a flame, and evolution of light, as when as firefly glows. Three physical changes that indicate a chemical change may have occurred (and that may be seen in this lab) are:…
When you mix copper, silver, and nitrate together, you will end up with silver nitrate solution will turn blue (it has become copper nitrate). On the piece of copper, there would be a coating of solid silver. If a chemical reaction is going to be observed when chemicals are mixed, heated or any other means of altering the substance, then we will be able to predict the products formed. If it is observed that in the original versus the changed substance no new substances are formed, the change is reversible, no energy is taken or given off, the chemical properties didn’t change, then it can be concluded that a physical change has taken place.…
The first thing to always remember when working in a lab is safety. The most important reason why you should always be safe is because many things in the lab can be harmful to you or the others in the lab. Machinery can go wrong, toxic substances may be spilled, shards of glass or other sharps may cause injuries if you're not careful.…
The primary objective in the lab is to determine the molecular formula of Copper Oxide through synthesis of copper oxide. In the first procedure, an empty crucible, Bunsen Burner, and electronic scale were placed onto the workbench. The electronic scale was zeroed before the crucible was placed on it. The total mass of the empty crucible was 88.000g. Afterwards, 10 grams of copper powder was placed into the crucible and weighed to be 98.000 g. The crucible with the copper was placed onto the Bunsen Burner. The initial color of the copper was red. The Bunsen Burner was set to a low flame and the crucible was observed for a minute. An additional 30 seconds was observed to ensure that the reaction was fully complete. After the reaction was complete, the color of the copper oxide was a dark black. The crucible and copper oxide was weighed to be 100.518 grams. The used materials were then placed into the waste recycling bin.…