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What changes gives NO evidence that a chemical reaction has taken place?
Wiki User
∙ 12y ago
Physical changes give no evidence that a chemical reaction has taken place, because no chemical reaction has taken place.
Wiki User
∙ 12y ago
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What shows the relationship between the reactants and products in a chemical reaction?
the coefficients of a balanced reaction
Why ethanol gives haloform reaction?
ethanol gives haloform reaction because it is oxidized to acetaldehyde whose alpha carbon donates a hydrogen atom for the formation of haloform
What is the reaction of phenol with phosphorus pentachloride?
There is no reaction when their molar ratio is around 1...but when phenol is present in excess it gives triphenylphosphate....
What is the effect of heat on wood?
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When sodium Na and chlorine Cl combine Na gives up one electron to fill Cls outer level The result is?
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How is the process of converting kiwi in plastic-ware evidence of a chemical reaction?
It gives evidence of a chemical reaction because it's molecules have changed to make something new also because it looks very different from how it looked before.
During photosynthesis what chemical reaction gives off heat?
Exothermic Reaction.
What term is used for the type of chemical reaction that gives out heat energy?
Exothermic reaction gives free heat (energy).
What shows the relationship between the reactants and products in a chemical reaction?
the coefficients of a balanced reaction
What is the name of a chemical reaction that gives out energy?
A chemical reaction that produces energy is said to be exothermic. In comparison, if it consumes energy it is endothermic.
What are three things that show evidence of a chemical reaction?
There are five things:Color changeodorstate change (from liquid to solid, liquid to gas, etc...),gives off at precipitatea temperature change
What is the proper name for a chemical reaction that gives out heat?
combustion
What term is used 4 the type of chemical reaction that gives out heat energy?
Exothermic reaction gives free heat (energy).
What is the chemical reaction for the formation of rubber?
The type of chemical reaction that takes place through the formation of the rubber is called the mechano-chemical reaction. Through this, it gives the end product a three dimensional structure.
What is a chemical reaction gives off heat called?
exothermic reactions-gives off heat
A chemical reaction that gives off heat is most likely to be what?
An endothermic reaction is one that consumes heat.
What is the chemical equation for the neutralization reaction of NH3 titrated with HCl?
This reaction gives ammonium chloride as the product.
