Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Chemical_change> ?p ?o. }
Showing items 1 to 17 of
17
with 100 items per page.
- Chemical_change abstract "Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes 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.When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an energy change as new products are generated. An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen. So much energy is released that the hydrogen gas released spontaneously burns in the air. This is an example of a chemical change because the end products are chemically different from the substances before the reaction.".
- Chemical_change wikiPageID "1326645".
- Chemical_change wikiPageRevisionID "599510941".
- Chemical_change expiry "2014-06-13".
- Chemical_change hasPhotoCollection Chemical_change.
- Chemical_change small "yes".
- Chemical_change subject Category:Chemical_bonding.
- Chemical_change subject Category:Chemical_properties.
- Chemical_change comment "Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes 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.".
- Chemical_change label "Chemical change".
- Chemical_change label "تغير كيميائي".
- Chemical_change sameAs Χημική_μεταβολή.
- Chemical_change sameAs m.04s_sr.
- Chemical_change sameAs Q3246649.
- Chemical_change sameAs Q3246649.
- Chemical_change wasDerivedFrom Chemical_change?oldid=599510941.
- Chemical_change isPrimaryTopicOf Chemical_change.