Chemical Change - Simple English Wikipedia, The Free Encyclopedia

Home » A Chemical Change Occurs When A Piece Of Wood » Chemical Change - Simple English Wikipedia, The Free Encyclopedia

Maybe your like

Jump to content
  • Page
  • Talk
English
  • Read
  • Change
  • Change source
  • View history
Tools Tools move to sidebar hide Actions
  • Read
  • Change
  • Change source
  • View history
General
  • What links here
  • Related changes
  • Upload file
  • Page information
  • Cite this page
  • Get shortened URL
  • Download QR code
  • Switch to legacy parser
Print/export
  • Make a book
  • Download as PDF
  • Page for printing
In other projects
  • Wikidata item
Appearance move to sidebar hide From Simple English Wikipedia, the free encyclopedia
Burning wood is an example of a chemical change that is not reversible

A chemical change (chemical reaction) is a change of materials into other materials with different properties.

Chemical changes occur when a substance combines with another to form a new substance, or, chemical decomposition into two or more different substances. These processes are called chemical reactions.

Burning of wood is a chemical change as new substances which cannot be changed back (e.g. carbon dioxide) are formed. For example, if wood is burned in a fireplace, there is not wood anymore but ash. Other examples include burning of a candle, rusting of iron, baking a cake, etc. Special details that describe how a chemical change takes place are called chemical properties.

Compare: physical change. The opposite of a chemical change is a physical change. Physical changes are a change in which no new substances are formed, and the substance which is changed is the same. For instance, if a stick of wood is broken, there is still a stick of wood; it is just broken.

More examples include changes of shape, changes of states, passing electricity through a copper wire, breaking of wood, shattering of glass, pouring of water, etc. Special details which do not change in a substance without new substances being formed are called physical properties.

Retrieved from "https://simple.wikipedia.org/w/index.php?title=Chemical_change&oldid=10315953" Category:
  • Chemical reactions
Search Search Chemical change 14 languages Add topic

Tag » A Chemical Change Occurs When A Piece Of Wood