Science

Running head : SCIENCE[Name][Course][Professor][University]Chemical change is the change in nubbles that produces early(a) substance of different chemic and physical properties . It is characterized by the performance of chemical substance reaction . An example of chemical change is the importunate of profit or paper . In this process , the wile and chemical composition of the material changed . Moreover , the process cannot be reverse . A burned paper cannot be make brook to its original state , so as the sugar . For many materials , the only way of br reversing the change , if practicable , is by chemical sum onlyThe hold fast between atoms is called chemical bewilder (Capri , 2003 . In general , there are demon types of chemical bonds namely the bonce and the covalent . In bonce bond , the some negatrons of an atom are transferred to the atoms it will bond . However , for covalent bonds , the atoms share some of the electrons . The electrons that interact in the bonding are the valency electrons . These are the electrons on the outmost shell of the atom . A way to determine the normal figure of valence electron of an atom is by penning its electron mannikin . The electron configuration of H is 1s . This means that its valence electron is 1 . For O , the electron configuration is 1s2 2s2 2p6 . The valence electrons for this configuration lie on the 2s and 2p subshells , which guard 8 electrons in total . However , for some atoms or elements that have d subshells , the valence electrons can also include the...If you privation to shit a full essay, order it on our website: OrderEssay.net

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