Chap 13 . Outline.docx - • Forming New Substances A....

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• Forming New SubstancesA.Chemical Reactions: A chemical reaction is a process in which one or more substances change to make one ormore new substances.: The chemical and physical properties of the new substances differ from those of theoriginal substances.1.Signs of Chemical Reactions: A precipitate is a solid substance that is formed in a solution.:During other chemical reactions, energy is given off. This energy may be in the form oflight, thermal energy, or electrical energy.2.A Change of Properties: If a reaction is taking place are good signals of chemical reactions, they do notguarantee that a reaction is happening.: Several things tell you that a chemical reaction is taking place. Bubbles form, a gas isgiven off, and the beaker becomes very hot.B.Bonds: Holding Molecules Together: A chemical bond is a force that holds two atoms together in a molecule.: For a chemical reaction to take place, the original bonds must break and new bondsmust form.

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Term
Spring
Professor
DRBROOKS
Tags
Chemical reaction

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