10 Science Holiday Homework

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Across
  1. 2. This is where the atom's protons and neutrons are found
  2. 3. This is a chemical with more than one kinda of the same element
  3. 8. A chemical that is made out of two different atoms in a chemical bond
  4. 9. This is where the atom's electrons are found
  5. 10. The columns of the periodic table
  6. 12. An ion with a positive charge
  7. 13. Chemical elements found in Group 1 of the periodic table
  8. 15. Chemical elements found in Group 18 of the periodic table
  9. 16. The configuration of electrons in the atom
  10. 20. This is the smallest part of the atom
  11. 22. An atom with either less or more electrons than its standard form
  12. 23. The smallest form of matter within a chemical element
  13. 24. Part of the atom that has a neutral charge
  14. 25. The rows of the periodic table
  15. 26. A group of chemical elements that range from atomic numbers 89 to 103
  16. 28. Niels Bohr created this scientific model of the atom
  17. 30. The normal shell of an electron
  18. 31. A group of chemical elements that range from atomic numbers 57 to 71
Down
  1. 1. The outermost shell of the atom
  2. 4. This is a chemical substance with only one kind of atom
  3. 5. A number that identifies the element of an atom
  4. 6. Shows the amount of energy that an atom has
  5. 7. An electron in the outermost electron shell
  6. 11. A light particle
  7. 14. The mass of the atom
  8. 17. This is when an atom jumps up from its ground state
  9. 18. Elements between groups 3 and 12
  10. 19. The symbol of an atom
  11. 21. This happens when an atom gives an electron to another atom and creates a bond
  12. 27. These are non-metals that cannot form a bond with metals
  13. 29. An ion with a negative charge
  14. 32. Chemical elements found in Group 17 of the periodic table