Science Key words

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Across
  1. 4. electricity that flows continuously
  2. 9. description of a substance that can be pounded or rolled into sheets
  3. 10. an experiment in which one or more products of a chemical reaction can escape
  4. 12. ability of a substance to conduct electricity or heat
  5. 15. a group of 17 elements on the periodic table
  6. 16. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  7. 17. element that has both metallic and non-metallic properties
  8. 20. slow chemical change that occurs when oxygen in the air reacts with a metal
  9. 22. chemical combination of two or more elements in a specific ratio
  10. 23. change of state from a gas to a solid
  11. 25. new materials created by a reaction
Down
  1. 1. substance that helps a chemical reaction to proceed more quickly
  2. 2. a table in which the elements are organized by their physical and chemical properties
  3. 3. change in appearance or state of a substance
  4. 5. group 18 elements in the periodic table
  5. 6. when two or more substances react to create a new substance
  6. 7. invisible negatively charged particle
  7. 8. amount of mass in a given volume of a substance
  8. 11. the smallest part of an element
  9. 13. an experiment in which all reactants and all products of a chemical reaction are accounted for
  10. 14. a substance that resists the flow of energy
  11. 16. a material that electric charge can move through easily
  12. 18. positive particle in the nucleus of an atom
  13. 19. new substance produced in a chemical reaction between reactants
  14. 21. neutral particle in the nucleus of an atom
  15. 24. positively charged centre of an atom