Dec 20, Answer: Every activity that sustains life on the planet takes place only because of the chemical properties of the atoms, molecules and compounds involved.
The atomic composition of a molecule is given by its formula. However, the fact that we can write a formula for a compound does not imply the existence of molecules having that composition.
Gases and most liquids consist of molecules, but many solids exist as extended lattices of atoms or ions electrically charged atoms or molecules. For example, there is no such thing as a "molecule" of ordinary salt, NaCl see below.
Confused about the distinction between molecules and compounds? Maybe the following will help: A molecule but not a compound - Ozone, O3, is not a compound because it contains only a single element.
This well-known molecule is a compound because it contains more than one element. It is built from interpenetrating lattices of sodium and chloride ions that extend indefinitely.
Structure and properties Composition and structure lie at the core of Chemistry, but they encompass only a very small part of it. It is largely the properties of chemical substances that interest us; it is through these that we experience and find uses for substances, and much of chemistry-as-a-science is devoted to understanding the relation between structure and properties.
For some purposes it is convenient to distinguish between chemical properties and physical properties, but as with most human-constructed dichotomies, the distinction becomes more fuzzy as one looks more closely.
Take some time to look it over and make sure you understand all the terms and the relations between them. For a more in-depth treatment of much of the material covered here, please see The basics of atoms, moles, formulas equations, and nomenclature.
On a microscopic basis it can be thought of as a re-arrangement of atoms. As with most human-created dichotomies, this begins to break down when examined closely. This is largely because of some ambiguity in what we regard as a distinct "substance". Elemental chlorine exists as the diatomic molecule Cl2 in the gas, liquid, and solid states; the major difference between them lies in the degree of organization.
In the gas the molecules move about randomly, whereas in the solid they are constrained to locations in a 3-dimensional lattice. In the liquid, this tight organization is relaxed, allowing the molecules to slip and slide around each other.
Since the basic molecular units remain the same in all three states, the processes of melting, freezing, condensation and vaporization are usually regarded as physical rather than chemical changes.
Because the ions in the solid, the hydrated ions in the solution, and the molecule Na2Cl2 are really different chemical species, the distinction between physical and chemical change becomes a bit fuzzy. Most chemical reactions proceed to some inermediate point that yields a mixture of reactants and products.
For example, if the two gases phosphorus trichloride and chlorine are mixed together at room temprature, they will combine until about half of them have changed into phosphorus pentachloride: The result, in any case, will be an equilibrium mixture of reactants and products.Chemistry and biology aren't just related but completely intertwined, as all biological processes are rooted in chemical processes.
Biology cannot be completely understood without knowing basic chemistry. The Oxford Dictionary defines "life" as having the capacity for growth, reproduction.
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Oct 19, · Best Answer: Biochemistry is the study of chemical processes in living organisms. Biochemistry governs all living organisms and living processes.
By controlling information flow through biochemical signalling and the flow of chemical energy through metabolism; biochemical processes give rise to the seemingly magical phenomenon of heartoftexashop.com: Resolved.
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