Quite hard crossword

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Across
  1. 2. Accidently discovered planet
  2. 5. Newest country
  3. 7. First game console
  4. 11. Type of tree with every vowel
  5. 12. A purple gem or crystal that is a variation of quartz
  6. 14. A mineral that can be crystalized or in other crystals that has a rotten egg smell
  7. 15. Water boils at ___ _______ degrees
  8. 17. _____ nodes
  9. 18. Federated states of micronesia, abbreviated
  10. 20. Word derived from the welsh with no vowels
  11. 21. The person who discovered gravity
  12. 22. Sound of anger
  13. 23. Only continent without mcdonalds
  14. 24. Coldest country excluding antarctica
  15. 25. Derived from the word xylene
Down
  1. 1. Who sang "out of the woods"
  2. 3. _____ board, used to communicate with the dead
  3. 4. Dwarf planet starting with m
  4. 6. Type of herb or spice starting with t
  5. 8. Confused or chaotic state
  6. 9. Plural of haj
  7. 10. Fragrant gum resin
  8. 13. Creator of wordle
  9. 14. Country with the most islands
  10. 16. A time of incomplete metamorphosis in dragonflies
  11. 19. Worldwide
  12. 20. A victorian bit of clothing which woman wore making it hard to breathe