Down |
1. | From Group 14 and reactivity depends on the element and have four valence electrons. (2 Words) |
2. | British chemist and teacher who wanted to know why elements combine in certain proportions. (2 Words) |
3. | The number of forces giving an atom its stucture and properties. |
4. | From Group 18 and is unreactive because it has a full outer shell of eight valence electrons except for Helium which has two. (2 Words) |
5. | A table that organizes all known elements according to atomic number and various other chemical and physical properties. (2 Words) |
6. | From Group 1 and are the most reactive of all the elements having one valence electron (Two words). (2 Words) |
7. | Is usually made out of two or more atoms joined in a defined ratio. |
8. | The sum of the number of neutrons and protons in an atom. (2 Words) |
11. | Word that "atoms" was derived from; means "not able to be divided". |
13. | Former student of Thomson's. (2 Words) |
15. | Consists of Groups 3-12 and are less reactive than both Groups 1 and 2 and have either one or two valence electrons. (2 Words) |
19. | An atom that has lost one or more electrons producing a positive charge. |
20. | An atom that has gained or lost neutrons. |
21. | Where electrons are located according to Schrodinger and Heisenberg. (2 Words) |
22. | From Group 15 and reactivity depends on the element and have five valence electrons. (2 Words) |
23. | From Group 2 and are less reactive than Group 1 having two valence electrons rather than one. (2 Words) |
24. | From Group 16 and is reactive and has six valence electrons. (2 Words) |
26. | A Russian chemist who discovered patterns to the elements and catagorized them according to different properties such as density, appearance, and melting points. (2 Words) |
28. | A British scientist who arranged the elements based on their atomic number. (2 Words) |
29. | Forms when valence electrons are transferred from one atom to another atom. (2 Words) |
30. | Is the joining of atoms to form new substances. (2 Words) |
31. | Is a bond formed by the attraction between positively charged metal ions and the electons around the ions. (2 Words) |
32. | Number of periods on the Periodic Table. |
34. | Forms when atoms share one or more pairs of electons. (2 Words) |
35. | British scientist who discovered even smaller particles inside an atom. |
36. | The particles of an atom without a charge. |
37. | Is the most abundant element in the universe and has one valence electron and is explosively reative with oxygen. |