Science

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Across
  1. 4. What is the element of the symbol O?
  2. 8. reactions occur when an acid is added to a base.
  3. 10. A vertical column.
  4. 12. What is the element of the symbol H?
  5. 13. a table that arranges the ELEMENTS based on their atomic number and their properties.
  6. 14. The short-hand abbreviation for the elements name.
  7. 20. Two or more substances combine to produce a SINGLE NEW SUBSTANCE.
  8. 22. The burning of a substance in oxygen is an example of
  9. 24. The number of protons in an atom is called its
  10. 25. Negative Charge
Down
  1. 1. A horizontal row.
  2. 2. when a single compound breaks down into TWO or more simpler products.
  3. 3. are chemicals that will change colour when added to an acid or a base
  4. 5. Neutral Charge
  5. 6. What is the maximum number of electrons in the second shell?
  6. 7. Which element is represented by the symbol \(Fe\)?
  7. 9. What is the maximum number of electrons in the first shell?
  8. 11. What are electrons found in?
  9. 15. What is the element of the symbol B?
  10. 16. are the smallest building blocks of living and non-living things.
  11. 17. What is the element of the symbol Ca?
  12. 18. Which radiation has the highest penetration power?
  13. 19. Refers to the number of protons plus neutrons
  14. 21. What is the element of the symbol S?
  15. 23. Positive Charge
  16. 26. There are 118 of these on the periodic table.