Chemical Interactions Vocabulary

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Across
  1. 1. the amount of one material in a certain volume of another material
  2. 4. - a material that decreases the rate of a reaction
  3. 8. anything that has mass and takes up space
  4. 12. a reaction that releases energy in the form of heat
  5. 13. a system in which matter can enter or leave to the surroundings
  6. 14. the min. amount of energy needed to get a chemical reaction started
  7. 15. a physical trait of a substance
  8. 17. solid that forms from a solution during a chemical reaction
  9. 21. the process when substances undergo chemical changes to turn into a new substance
  10. 22. equation- a short/easy way to show a chemical reaction, using symbols
  11. 23. a substance that formed as a result of a chemical reaction
  12. 24. a system in which no matter is allowed to enter or leave
  13. 25. - a rapid reaction between oxygen and fuel that results in fire.
  14. 26. a property of a chemical/ can change
Down
  1. 2. a number in front of a chemical formula; tells how many atoms of each reactant and product are involved in a reaction
  2. 3. of mass- the principle stating that matter is not creator or destroyed during a chemical reaction
  3. 5. - a reaction in which 1 element replaces another in a compound or when 2 elem. in a different compound trade places.
  4. 6. study of properties of matter/how it changes
  5. 7. a reaction that absorbs energy in the form of heat
  6. 9. a chemical reaction that breaks down compounds into simpler products
  7. 10. - a chemical reaction with 2 or more simple substances combine to form a new, complex substance.
  8. 11. a material that increases the rate of a reaction by lowering the activation energy
  9. 16. a material that releases energy when it burns.
  10. 18. -a biological catalyst that lowers the activation energy of reactions in cells
  11. 19. - a substance that enters into a chemical reaction
  12. 20. changes the look w/o becoming a new substance