Chemical change
Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. Some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. Understanding chemical changes is a major part of the science of chemistry.
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1782 in scienceChanges in matterChemical ChangeChemical ChangesChemical propertyChemical reactionConservation science (cultural heritage)Controlled burnData remanenceElectrical telegraphElectrochemistryHarry Melville (chemist)List of materials propertiesMass-independent fractionationMolecular springPhysical changePolymerizationTikka (food)
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Chemical change
Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. Some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. Understanding chemical changes is a major part of the science of chemistry.
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Chemical changes occur when a ...... before the chemical reaction.
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Els canvis químics són aquells ...... cés és difícilment reversible.
@ca
Perubahan kimia adalah perubah ...... g kayu dinamakan hasil reaksi.
@in
Χημικές αλλαγές συμβαίνουν ότα ...... κολο ή αδύνατο να αντιστραφεί.
@el
التغير الكيميائي هو التغير الذ ...... ليتم فيسمى تفاعل ماص للحرارة.
@ar
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931,486,161
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Chemical changes occur when a ...... t of the science of chemistry.
@en
Els canvis químics són aquells ...... ies en mescles o dissolucions.
@ca
Perubahan kimia adalah perubah ...... yebabkan perubahan fisik pula.
@in
Χημικές αλλαγές συμβαίνουν ότα ...... ρος της επιστήμης της χημείας.
@el
التغير الكيميائي هو التغير الذ ...... ليتم فيسمى تفاعل ماص للحرارة.
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Canvis químics
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Chemical change
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Perubahan kimia
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Χημική μεταβολή
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تغير كيميائي
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