Chemistry Crossword

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Across
  1. 2. A material that electric charge can move through easily
  2. 5. Substance that reacts with another substance or substances in a chemical reaction to create new substances with different properties
  3. 6. Pure substances formed as a result of the attraction between the particles of opposite charges called ions
  4. 7. Chemical combination of two or more elements in a specific ratio
  5. 8. An experiment in which all the reactants and all products of a chemical reaction are accounted for
  6. 9. Is a chemical reaction that takes place in the cells in your body food (glucose) reacts with oxygen to produce energy, water and carbon dioxide.
  7. 13. Speed of a chemical reaction
  8. 14. Number of protons in the nucleus of one atom of an element
  9. 16. Chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  10. 18. Orbit of electrons around the nucleus of an atom
  11. 19. Slow chemical change
  12. 20. Group one elements in the periodic table. Not including hydrogen; the most reactive of the metals.
  13. 21. Group 2 elements in the periodic table; their reactivity is not a strong as that of the alkali metals
  14. 24. An experiment in which one or more products of chemical reaction can escape
Down
  1. 1. Organic catalysts
  2. 2. Combination of symbols that represent a compound; the formula identifies the elements in the compound and the amount of each element
  3. 3. in a chemical reaction is always equal to the total mass of the products
  4. 4. Substances that help a reaction proceed faster
  5. 7. A reaction that takes place when two or more substances react to form new substances
  6. 10. Mass of one atom of an element calculated from the total number of protons, neutrons and electrons of that atom; measured in atomic mass units (amu)
  7. 11. change that results when 2 or more substances react to make a new substance
  8. 12. Releases heat
  9. 15. Absorbs heat
  10. 17. Pure substance that cannot be broken down into other substances; substance made up of only one type of atom
  11. 22. new substance produced in a chemical reaction between reactants
  12. 23. Invisible negatively charged particle that orbits the nucleus of an atom