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What signs or indicators of chemical changes are shown in these reactions?
Wiki User
∙ 12y ago
Chemical reactions can be obvious. First of all, listen: if you hear any sounds, such as a fizzing sound, that may be one indicator. Another is a change in color, or even state. If a solution is aqueous, and it precipitates (becomes a solid), that's also another indicator of a chemical reaction.
Wiki User
∙ 12y ago
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Why the reactions shown by grignard reagent are exothermic?
grignard reactions evolve heat
What do you call the ingredients of a chemical reaction?
-A chemical reaction is a process that changes, or transforms, one set of chemicals into another. An important scientific principle is that mass and energy are conserved during chemical transformations. This is also true for chemical reactions that occur in living organisms. some chemical reactions occur slowly, such as the combination of iron and oxygen to form an iron oxide(rust). Other reactions occur quickly. The elements or compounds that enter into a chemical reaction are know as reactants. The elements or compounds pruduced by a chemical reaction are known as products. Chemical reactions always involve changes in the chemicdal bonds that join atoms in compounds. -Chemical reactions that occurs in your body involves carbon dioxide. Your cells constantly profuce carbon dioxide as a normal part of their activity. Carbon dioxide is carried to you lungs through the bloodstream, and then is eliminated as you exhale. Carbon dioxide is not very soluble in water. The bloodstream could not possibly dissolve enough carbon dioxide to carry it away from your tissues were it not fro chemical reaction. As it enters the blood, carbon dioxide reacts with water to produce a highly coluble compind called carbonic acid, H2CO3. CO2 + H2O ---> H2CO3 The reaction shown above enables the bloodstream to carry carbon diocide to the lungs. In the lungs, the reaction is reversed. H2CO3 ---> CO2 + H2O This reverse reaction produces carbon dioxide gas, which is released as you exhale.
What is the chemical equation shown is a reactant?
Reactants are to the left in a chemical equation.
Which of the molecules in this chemical equation shown is a reactanct?
CO2
Which of the molecules in this chemical equation shown is a reactant?
CO2
What chemical reactions shown from H2o O2 H2O2?
The simplified chemical reaction is:H2 + O2 = H2O2
What experiment can I do that shows physical and chemical changes in fruit?
Let it rot. The physical and chemical changes are huge and can be easy shown when you compare a "good" fruit and a rotting version.
Chemical changes in the structure shown are most likely to happen during?
Exposure to mutagenic agents
On which type of form can the best indicators of wealth be shown?
balance sheet
Why the reactions shown by grignard reagent are exothermic?
grignard reactions evolve heat
Describe the energy changes occurring in the process shown above?
the water is different from one on the right
A chemist synthesize tin iodide according to the chemical reactions shown below the chemist starts with 10.0g of tin and excess iodine after the reaction 36.8g of tin iodide are obtained what percent?
69.7
What is the difference between a chemical reaction and a product in a chemical equation?
The reactants are the substances that undergo the chemical reaction, and are shown on the left side of a chemical equation. The products are produced by the chemical reaction, and are shown on the right side of the chemical equation.
What is the chemical equation shown is a reactant?
Reactants are to the left in a chemical equation.
What do you call the ingredients of a chemical reaction?
-A chemical reaction is a process that changes, or transforms, one set of chemicals into another. An important scientific principle is that mass and energy are conserved during chemical transformations. This is also true for chemical reactions that occur in living organisms. some chemical reactions occur slowly, such as the combination of iron and oxygen to form an iron oxide(rust). Other reactions occur quickly. The elements or compounds that enter into a chemical reaction are know as reactants. The elements or compounds pruduced by a chemical reaction are known as products. Chemical reactions always involve changes in the chemicdal bonds that join atoms in compounds. -Chemical reactions that occurs in your body involves carbon dioxide. Your cells constantly profuce carbon dioxide as a normal part of their activity. Carbon dioxide is carried to you lungs through the bloodstream, and then is eliminated as you exhale. Carbon dioxide is not very soluble in water. The bloodstream could not possibly dissolve enough carbon dioxide to carry it away from your tissues were it not fro chemical reaction. As it enters the blood, carbon dioxide reacts with water to produce a highly coluble compind called carbonic acid, H2CO3. CO2 + H2O ---> H2CO3 The reaction shown above enables the bloodstream to carry carbon diocide to the lungs. In the lungs, the reaction is reversed. H2CO3 ---> CO2 + H2O This reverse reaction produces carbon dioxide gas, which is released as you exhale.
What is thermochemical equation?
In thermodynamics and physical chemistry, thermochemistry is the study of the heat evolved or absorbed in chemical reactions. It is concerned with the heat exchange accompanying transformations, such as mixing, phase transitions, chemical reactions, etc., which includes calculations of such quantities as the heat capacity, heat of combustion, heat of formation, etc. The laws of thermochemistry rest on two statements: # Lavoisier and Laplace's law (1782): the heat exchange accompanying a transformation is equal and opposite to the heat exchange accompanying the reverse transformation. # Hess's law (1840): the heat exchange accompanying a transformation is the same whether the process occurs in one or several steps Both laws preceded the first law of thermodynamics (1850); it can be shown, however, that they are a direct consequence of it. They also investigated specific heat and latent heat.
What are the corresponding evidences shown that a chemical change occurred?
chemical change occurred when new chemical substance was created
