Vocabulary Chapter 7

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Across
  1. 5. Si fundamental unit for the quality of mater in a substance count equl to 6.022/ 10
  2. 6. A substance that enters into a chemical reaction.
  3. 12. reaction- A chemical reaction in which a single reactant breaks down into two or more products.
  4. 13. Chatelier principle- The principle that states that a chemical system in equilibrium will adjust its equilibrium position in such a way as to reduce the effort of any changes made to the system.
  5. 15. Equilibrium- The state that occurs when for wards and reverse reaction each happen at the same rate.
  6. 17. reaction- A chemical reaction that releases more thermal energy than it absorbs.
  7. 19. model- The model that states that for a reaction to occur, the reactant particles must collide with other with the proper alignment and with enough energy.
  8. 21. A substance that slows the rate of a reaction by reducing the effectiveness of catalysts.
  9. 22. of conversational of energy- The law that states that every effect has a specific identifiable cause, and for every cause there is a definite and predictable effect.
  10. 24. energy- The minimum energy needed for chemical reaction to occur.
Down
  1. 1. A substance that is formed during a chemical reaction.
  2. 2. mass- The mass of one of a substance
  3. 3. reaction- A chemical reaction in which two or more reactants combiDecompositiongle, more complex product.
  4. 4. A gain of electrons in a chemical reaction.
  5. 7. reaction- A process that rearranges the atoms in one or more substances into one or more new substances.
  6. 8. A loss of electrons in a chemical reaction.
  7. 9. replacement reaction- A chemical reaction in which one element in a compound is replaced by another element also known as a single displacement reaction.
  8. 10. An exothermic chemical reaction in which a fuel reacts with oxygen.
  9. 11. Rate- The speed of a reaction.
  10. 14. reaction- A Reaction in which the products can react together to re-fomr the original reactants.
  11. 15. equation- A combination of chemical formulas and symbols that models a chemical reaction.
  12. 16. Reaction- A chemical reaction that absorbs more thermal energy than it releases.
  13. 18. replacement reaction- A chemical reaction in which two compounds swap captions and anions with each other, also known as a double- replacement reaction.
  14. 20. A substance that helps a reaction happen faster but is not used up in the reaction..
  15. 23. A number placed in front of a chemical formula within a chemical equalation that shows how many units of a reactant or product are needed to balance the chemical equation.