Name: ________________________________________ Period: _____ Date: _________

Dekalb Reads Assignment 5.1A

The nature of Chemical Reactions

Read pages 148 -153 and answer the following questions
  1. Write down some words that describe chemical reactions.
  2. Your own health is due to ______________________________ taking place inside your body.
  3. Chemical reactions ________________________ substances.
  4. Name the substances formed when yeast acts on sugar.
  5. Sourdough bread gets its characteristic taste from _______________________.
  6. What happens when calcium carbonated reacts with an acid.
  7. What happens when solutions of sodium sulfide and cadmium nitrate are mixed?
  8. What happens when ammonium dichromate decomposes?
  9. Write 2 signs of chemical reactions.
  10. What expands the dough causing the bread to rise?
  11. What makes the food turn brown when heated?
  12. ___________________________ rearranges atoms.
  13. What is the chemical name of gasoline?
  14. What are the reactants and products when gasoline burns in a car engine?
  15. Define reactant.
  16. Define product.
  17. In a chemical reaction ______________ are rearranged as bonds are broken and formed.
  18. In all chemical reactions, __________________ is always conserved.
  19. Isooctane Oxygen reaction needs ___________________ to be started.
  20. What provides energy to start the isooctane oxygen reaction?
  21. Why smoking or open flames are not allowed near a gas pump?
  22. Energy must be _________________ to break bonds.
  23. In isooctane all the bonds to Carbon atoms are ________________________.
  24. A _______________________ holds two Oxygen atoms together.
  25. Name 4 different forms of energy that can be used to break bonds.
  26. When molecules __________________ and ___________________ is transferred to separate atoms, bonds can break.
  27. Each carbon dioxide molecule has ____ oxygen Amos connected to the carbon atom with a ________ bond.
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