Chemistry

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Across
  1. 3. The name of the Russian Chemist who started the development of the periodic table
  2. 4. Found in the nucleus and have a neutral charge
  3. 8. What is the atomic number for Sulphur written as a word
  4. 12. The burning of a substance in oxygen
  5. 14. What is the name for Lead on the periodic table?
  6. 15. Word that means indivisible
  7. 17. What is the name for Mercury on the periodic table?
  8. 18. The name of a table that arranges elements based on their properties
  9. 20. First person to propose the issues behind Modern Atomic Theory in 1800s
  10. 22. An example of a chemical element starting with H
  11. 24. Reaction that occurs when acid is added to a base forming water and at least one substance
  12. 25. defines the characteristics of each element and how many protons are present
Down
  1. 1. Negative sub-atomic particle
  2. 2. Atoms have the same unique amount of protons
  3. 5. An example of this is Corrosion and rusting
  4. 6. The number of protons and neutrons is equal to this in an atom
  5. 7. English term for something that cannot be further divided
  6. 9. Chemicals that will change colour when added to an acid or base
  7. 10. When elements combine together chemically, they produce compounds
  8. 11. Positive sub-atomic particle
  9. 13. Two or more substances combine to produce a single new substance
  10. 16. Each one of these has a maximum number of electrons
  11. 19. What is the name of the element Polonium on the periodic table
  12. 21. What is the name for Arsenic on the periodic table?
  13. 23. A single compound breaks down into two or more simpler products