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Aristotle: He proposed that all substance are composed of 4 elements.
Xray: Wilhem Roentgen discovered________.
Radioactive: ____ materials cause atoms to break down spontaneously.
Proton: It has an electrical charge of positive one.
Neutron: It has no net electric charge.
Cation: The ion with positive charge.
Anion: The ion with negative charge.
MassNumber: Protons+Neutron=________.
Ortbitals: They are usually illustrated as electron clouds.
ElectronConfiguration: The probable distribution of electrons around the nucleus among the orbitals is called ___________.
Neon: Has the electric configuration 1s2,2s2,2p6.
Empedocles: He divided matter into 4 elements.
John Dalton: ____ come up with atomic theory.
SirWilliamCrookes: He constructed the fore runner of the Modern TV picture tube in the 1870s.
Nucleus: It is located at the center of an atom.
Electron: It has electrical charge of -1.
ValenceShell: The highest occupied energy level or electron shell is called______.
Ion: An atom in which the total no. of electron& the total no. of protons are not equal.
Aufbau: It is a german word for building up or construction.
Hydrogen: Has the electric configuration 1s7.
Across:2. | It is a german word for building up or construction. | 5. | It has an electrical charge of positive one. | 9. | Has the electric configuration 1s2,2s2,2p6. | 12. | The probable distribution of electrons around the nucleus among the orbitals is called ___________. |
| 16. | He constructed the fore runner of the Modern TV picture tube in the 1870s. | 18. | Has the electric configuration 1s7. | 19. | They are usually illustrated as electron clouds. |
| | Down:1. | ____ materials cause atoms to break down spontaneously. | 3. | ____ come up with atomic theory. | 4. | Protons+Neutron=________. | 6. | He divided matter into 4 elements. | 7. | It has no net electric charge. | 8. | He proposed that all substance are composed of 4 elements. | 9. | It is located at the center of an atom. |
| 10. | The ion with negative charge. | 11. | The ion with positive charge. | 13. | Wilhem Roentgen discovered________. | 14. | It has electrical charge of -1. | 15. | The highest occupied energy level or electron shell is called______. | 17. | An atom in which the total no. of electron& the total no. of protons are not equal. |
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PuzzleFast.com, Noncommercial Use Only
Across:2. | It is a german word for building up or construction. | 5. | It has an electrical charge of positive one. | 9. | Has the electric configuration 1s2,2s2,2p6. | 12. | The probable distribution of electrons around the nucleus among the orbitals is called ___________. |
| 16. | He constructed the fore runner of the Modern TV picture tube in the 1870s. | 18. | Has the electric configuration 1s7. | 19. | They are usually illustrated as electron clouds. |
| | Down:1. | ____ materials cause atoms to break down spontaneously. | 3. | ____ come up with atomic theory. | 4. | Protons+Neutron=________. | 6. | He divided matter into 4 elements. | 7. | It has no net electric charge. | 8. | He proposed that all substance are composed of 4 elements. | 9. | It is located at the center of an atom. |
| 10. | The ion with negative charge. | 11. | The ion with positive charge. | 13. | Wilhem Roentgen discovered________. | 14. | It has electrical charge of -1. | 15. | The highest occupied energy level or electron shell is called______. | 17. | An atom in which the total no. of electron& the total no. of protons are not equal. |
| |
© 2014
PuzzleFast.com, Noncommercial Use Only