Copper Cycle Lab
TITLE : The copper cycle
IN TRODUCTION
The purpose of the experiment is to recognize that change of state, change in colour, formation of a precipitate, or the evolution of heat are associated with a chemical change; to study reactions of copper.
Copper is an element that can be found in nature in a variety of different compounds. The most common natural ore is the sulphide, known as chalcocite, Cu2S. This mineral is an important source of copper metal because it is about 80% copper by weight. Copper has many important uses due to its chemical and physical properties. Copper is a good conductor of both heat and electricity, hence it can be found in electrical lines or on cooking pots. It is also used in brass and bronze as an alloying …show more content…
In a sequence of reactions, the product of an initial reaction is used as a reactant in a second reaction. This process can be repeated until the desired product is obtained. Just as chemists classify matter based on properties, they also classify reactions based on how they proceed. There are different reactions of classifications. A given reaction may belong to more than one category. For example, in the present reaction, copper ions will be transformed into copper metal using zinc metal. This reaction can be classified as a single displacement reaction, but it is also a redox reaction since the copper is gaining electrons from the zinc atoms to produce the copper atoms and zinc ions in …show more content…
The various reactions gave the expected chemical change in the experiment showing the expected colour and phase states changes. A yield percent of 77% was obtained, this percentage is accepted but low when compared to a 100% yield, and it is an indicative of some experimental errors. There might have been a mis-measurement of reactants during the experiment as well as lose of contents. This must have resulted in greater yield percent. However, the experiment was run successfully because copper metal was recovered as a product.
CONCLUSION
The yield of 77% was obtained, which shows that the preparation of The Preparation of copper metal was successful although a100% yield was not obtained. It can be concluded that an element/matter can never be destroyed or created. The copper cycle is evidence for the Law of Conservation of Mass, which states that an element or matter can never be created or destroyed, only changed.
REFFERENCE
Brown T.L., Murphy C.J., LeMay H.E., Langford S.J., Bursten B.E., Sagatys D. (2010) Chemistry the Central Science: a broad perspective 2nd Ed. Pearson Australia Group
IN TRODUCTION
The purpose of the experiment is to recognize that change of state, change in colour, formation of a precipitate, or the evolution of heat are associated with a chemical change; to study reactions of copper.
Copper is an element that can be found in nature in a variety of different compounds. The most common natural ore is the sulphide, known as chalcocite, Cu2S. This mineral is an important source of copper metal because it is about 80% copper by weight. Copper has many important uses due to its chemical and physical properties. Copper is a good conductor of both heat and electricity, hence it can be found in electrical lines or on cooking pots. It is also used in brass and bronze as an alloying …show more content…
In a sequence of reactions, the product of an initial reaction is used as a reactant in a second reaction. This process can be repeated until the desired product is obtained. Just as chemists classify matter based on properties, they also classify reactions based on how they proceed. There are different reactions of classifications. A given reaction may belong to more than one category. For example, in the present reaction, copper ions will be transformed into copper metal using zinc metal. This reaction can be classified as a single displacement reaction, but it is also a redox reaction since the copper is gaining electrons from the zinc atoms to produce the copper atoms and zinc ions in …show more content…
The various reactions gave the expected chemical change in the experiment showing the expected colour and phase states changes. A yield percent of 77% was obtained, this percentage is accepted but low when compared to a 100% yield, and it is an indicative of some experimental errors. There might have been a mis-measurement of reactants during the experiment as well as lose of contents. This must have resulted in greater yield percent. However, the experiment was run successfully because copper metal was recovered as a product.
CONCLUSION
The yield of 77% was obtained, which shows that the preparation of The Preparation of copper metal was successful although a100% yield was not obtained. It can be concluded that an element/matter can never be destroyed or created. The copper cycle is evidence for the Law of Conservation of Mass, which states that an element or matter can never be created or destroyed, only changed.
REFFERENCE
Brown T.L., Murphy C.J., LeMay H.E., Langford S.J., Bursten B.E., Sagatys D. (2010) Chemistry the Central Science: a broad perspective 2nd Ed. Pearson Australia Group