Chemistry Crossword

123456789101112131415161718192021222324
Across
  1. 5. Pure substance formed when at least one metal and one non-metal combine
  2. 7. French chemist who created a nomenclature for naming compounds
  3. 8. Number of protons in the nucleus of one atom of an element
  4. 11. Columns in the periodic table labelled 1-18
  5. 13. Pure substance formed when non-metals combine
  6. 15. Rows in the periodic table labelled 1-7
  7. 16. New materials produced by the reaction
  8. 17. Substances that help a reaction proceed faster
  9. 21. Chemical reaction that absorbs heat energy
  10. 23. Mass of one atom of an element calculated from the total number of protons, neutrons, and electrons of that atom; measured in amu
  11. 24. Workplace Hazardous Material Information System
Down
  1. 1. A table in which the elements are organized by their physical and chemical properties
  2. 2. Solid or gas; solids are dull, brittle elements
  3. 3. Anything that has mass and occupies space
  4. 4. Chemical reaction that takes place in the cells in your body
  5. 6. Below
  6. 9. Have metallic and non-metallic properties
  7. 10. Chemical reaction that releases heat energy
  8. 12. Chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  9. 14. More than two elements combine
  10. 18. Pure substance that cannot be broken down into other substances; substance only made up of one type of atom
  11. 19. Materials at the start of a reaction
  12. 20. Shiny, malleable, and ductile
  13. 22. Slow chemical change that occurs when oxygen in air reacts with a metal