living matter-constitute the majority of molecules found in living organisms from plants to people. 1 of the 4 special features of carbon is that carbon atoms are able to bond with each other to form extended chains-sharing pairs of electrons with neighbouring carbon atoms which allow the formation of stable covalent carbon-carbon bonds. Carbon can also form branched chains and rings- these structures help to provide the skeletons of organic molecules. Number of carbon atoms in the chain is important
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to other polar molecules and more importantly to other water molecules. Hydrogen bonds form in-between these polar molecules. The many unique properties water withholds will be discussed in this essay varying from its thermal properties to its solvent properties. The polar molecule attracts other polar water molecules. The slightly negative oxygen is attracted to the slightly positive hydrogen. Weak hydrogen bonds connect them. Electrons are pulled closer to oxygen making oxygen negative and
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compounds. CHEMICAL BONDS When two or more atoms are bonded together to form new and more complex aggregates the force of attraction that holds them together is called a chemical bond. IONIC BONDS The bond in which a complete transfer of an electron from one atom to another and the mutual attraction of the two ions thus formed is termed an ionic bond. Best example is NaCl or the table salt. COVALENT BONDS If the electron is shared between two atoms and keeps them together‚ this type of a bond is called
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Introduction The purpose of this lab is to be able to observe the reaction rates of different chemical substances‚ by looking at which substance is the fastest reactant. This is what chemical kinetics is. Reaction rate is the change in the concentration of a reactant or product in a chemical reaction per unit time. In this lab the requirement was to be able to calculate each Average reaction rate which is the change in reactant or product concentration at a given time interval. Some equations that
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with for this article is‚ “What chemical qualities of rubber make it a good barrier at the end of the shooting lanes?” This question connects to the article because the new range uses rubber to slow the bullets at the end of their shooting lanes. According to Encyclopedia Britannica‚ rubber is an elastic
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Water is a chemical compound with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at standard ambient temperature and pressure‚ but it often co-exists on Earth with its solid state‚ ice‚ and gaseous state (water vapor or steam). Water also exists in a liquid crystal state near hydrophilic surfaces. Water is considered a purifier in most religions. Major faiths that incorporate ritual washing (ablution) include Christianity
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This is because there is more bond energy in that molecule than the other alcohols. Within a molecule there are bond energies that are holding the atoms together. When the fuel combusts a chemical reaction takes place‚ this breaks the bonds‚ this requires energy‚ and makes new bonds this gives out energy. The energy differences between the two tell us how much energy was given out or taken in. We can show this on a graph. ENERGY CHANGES DURING A REACTION To find the bond energies in the molecule of
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Detecting Signs of Chemical Change REAC 399 Prepared by: Elizabeth G. Perez Date of experiment: October 3‚ 2006 Course: Chemistry 100/60 Abstract: The objective of this experiment will be to combine various substances‚ liquids and metals‚ and to observe their behavior when they are combined. The types of reactions observed shall determine the nature of these reactions: physical or chemical. Introduction: An elements¡¦ reaction to certain substances may be predicted by its
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1. Briefly explain the following: a. Chemical equilibrium- Chemical equilibrium is the state of a reaction when the concentrations of the reactants and products are no longer changing and remain constant. The forward reaction proceeds at the same rate as the reverse reactions making them equal. This type of equilibrium is also named dynamic equilibrium or a dynamic process. When a reaction has reached its chemical equilibrium‚ the constant K value will remain constant unless the temperature changes
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is because there is more bond energy in that molecule than the other alcohols. Within a molecule there are bond energies that are holding the atoms together. When the fuel combusts a chemical reaction takes place‚ this breaks the bonds‚ this requires energy‚ and makes new bonds this gives out energy. The energy differences between the two tell us how much energy was given out or taken in. We can show this on a graph. ENERGY CHANGES DURING A REACTION To find the bond energies in the molecule
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