{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Ch. 7 Chemical Reactions Notes

Ch. 7 Chemical Reactions Notes -...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemical Reactions/Equations Notes (Ch. 7) 13:07 Evidence of Chemical Changes - Color Change - Precipitate Formation - Energy/Heat Changes (endothermic/exothermic) - Odor Changes - Release of a gas - The emission of light - Rearrangement of atoms from reactants to products Chemical Equation - tell what substances are reacting and what substances are products - coefficients of a balanced equations tell us in what ratio the substances react or are  produced reactants   products AB + CD   CB + AD H 2  + O  H 2 O 2 H2+ O2  2 H 2 O Energy and Chemical Reactions Endothermic Reaction- Energy absorbed A + B + heat/energy   AB Exothermic Reaction- Energy released 
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
A + B   AB + heat/energy Balancing Equations Law of Conservation of Mass (Lavoiser) Can’t create or destroy mass – only rearrange Chemical Reactions have to be balanced C + O  CO 2
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.
  • Spring '11
  • mike
  • double displacement reaction, Single displacement reaction, displacement reaction, Chemical Reactions/Equations Notes, Endothermic Reaction­ Energy, Exothermic Reaction­ Energy

{[ snackBarMessage ]}