ASSIGNING SYMBOLS, WORD EQUATIONS & USES OF ELEMENTS

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Across
  1. 4. A reactive metal with symbol K, important in fertilizers and plant growth.
  2. 6. A compound formed when a metal reacts with nitrogen.
  3. 7. A soft, reactive metal with symbol Na, commonly found in salt compounds.
  4. 10. A gas element with symbol O that reacts with many substances during combustion.
  5. 11. A rule or system agreed upon by scientists worldwide to ensure uniform understanding.
  6. 12. A compound formed when an element reacts with oxygen.
  7. 14. An ancient language from which some element symbols are derived (e.g. Fe from Ferrum).
  8. 15. A light, corrosion-resistant metal used in aeroplanes and overhead cables.
Down
  1. 1. A substance that takes part in a chemical reaction and changes into something new.
  2. 2. A substance containing elements like nitrogen, potassium, and phosphorus that improves soil fertility.
  3. 3. A chemical equation written using words instead of symbols to show a reaction.
  4. 5. A one- or two-letter abbreviation used to represent an element in chemistry.
  5. 8. A strong metal with symbol Fe, widely used in construction and tools.
  6. 9. A new substance formed as a result of a chemical reaction.
  7. 13. A pure substance made of only one type of atom that cannot be broken down chemically.