'Hgo cl 2 hgcl' diaporamas de présentation

T. Trimpe sciencespot/

Chemical Reactions. T. Trimpe http://sciencespot.net/. Watch the movie and then complete the chart. Two or more elements or compounds combine to make a more complex substance. A + B ? AB. AB ? A + B. Compounds break down into simpler substances.

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8 th Grade Science Adapted by T. Trimpe sciencespot/

Chemical Reactions and Equations. 8 th Grade Science Adapted by T. Trimpe http://sciencespot.net/ http://www.unit5.org/chemistry/Equations.html. Remember: Chemical Changes. Chemical change : a change that occurs causing the identity of the substance to change Burning paper

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____ Na + Br 2 ? NaBr ____ CuCl 2 + H 2 S ? CuS + HCl

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Example C + O 2

Example C + O 2. ?. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. C. +. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. O. General: A + B ? AB. SYNTHESIS. Example: NaCl. ?. +. Na. Na. Cl. Cl.

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Identifying Chemical Reactions

Identifying Chemical Reactions. Synthesis Reactions (the get together). Combining two or more simple substances to make a more complex one. + A B AB A + B AB 2Na +Cl 2 2NaCl Analogy: Like Marriage.

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Chapter 11 sciencespot/

Chemical Reactions. Chapter 11 http://sciencespot.net/. Synthesis. Definition: Two or more elements or compounds combine to make a more complex substance. A + B ? AB. Decomposition. Definition: Compounds break down into simpler substances. +. ?. AB ? A + B. Single replacement.

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8 th Grade Science T. Trimpe sciencespot/

Chemical Reactions. 8 th Grade Science T. Trimpe http://sciencespot.net/. Watch the movie and then complete the chart. Two or more elements or compounds combine to make a more complex substance. A + B ? AB. AB ? A + B. Compounds break down into simpler substances.

164 views • 4 slides

8 th Grade Science T. Trimpe sciencespot/

Chemical Reactions. 8 th Grade Science T. Trimpe http://sciencespot.net/. Watch the movie and then complete the chart. Two or more elements or compounds combine to make a more complex substance. A + B ? AB. AB ? A + B. Compounds break down into simpler substances.

54 views • 4 slides