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Periodic Table Vocab
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Atom:The smallest unit in matter
Nucleus:The center of an atom
Neutron:A neutral subatomic particle
Proton:A positively charged subatomic particle
Electron:A negatively charged particle
Period:A horizontal row of elements
Valence electron:An electron in the outer most level in an atom
Periodic Law:The properties of an element tend to repeat in a regular pattern
Group:A vertical column of elements
Ion:An atom or a group of atoms that has lost or gained one or more electrons and therefore has a net electric charge
Cation:an ion with a positive charge
Anion:An ion with a negative charge
Atomic Number:The number of protons in the nucleus of an atom
Mass Number:The total number of protons and neutrons in the nucleus of an atom
Isotopes:Any atoms having the same number of protons but a different number of neutrons
Amu:Symbol for atomic mass unit
Average Atomic Mass:the weighted average of the masses of all naturally occuring isotopes of an elementmetal
Metal:The elements thta are good conductors of heat and electricity
Nonmetal:The elemnts that are usually poor conductors of heat and electricity
Metalloid:an element that has properties of both a metal and nonmetal
Periodic Table Vocab
Across:1. | The elemnts that are usually poor conductors of heat and electricity | 3. | The center of an atom | 4. | an ion with a positive charge | 7. | The properties of an element tend to repeat in a regular pattern | 9. | Symbol for atomic mass unit | 10. | An ion with a negative charge | 13. | A horizontal row of elements | 15. | The smallest unit in matter | 17. | an element that has properties of both a metal and nonmetal | 18. | An atom or a group of atoms that has lost or gained one or more electrons and therefore has a net electric charge | 19. | The number of protons in the nucleus of an atom |
| | Down:2. | A negatively charged particle | 5. | The elements thta are good conductors of heat and electricity | 6. | An electron in the outer most level in an atom | 8. | A positively charged subatomic particle | 11. | A neutral subatomic particle | 12. | the weighted average of the masses of all naturally occuring isotopes of an elementmetal | 14. | The total number of protons and neutrons in the nucleus of an atom | 16. | A vertical column of elements |
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© 2014
PuzzleFast.com, Noncommercial Use Only
Periodic Table Vocab
Across:1. | The elemnts that are usually poor conductors of heat and electricity | 3. | The center of an atom | 4. | an ion with a positive charge | 7. | The properties of an element tend to repeat in a regular pattern | 9. | Symbol for atomic mass unit | 10. | An ion with a negative charge | 13. | A horizontal row of elements | 15. | The smallest unit in matter | 17. | an element that has properties of both a metal and nonmetal | 18. | An atom or a group of atoms that has lost or gained one or more electrons and therefore has a net electric charge | 19. | The number of protons in the nucleus of an atom |
| | Down:2. | A negatively charged particle | 5. | The elements thta are good conductors of heat and electricity | 6. | An electron in the outer most level in an atom | 8. | A positively charged subatomic particle | 11. | A neutral subatomic particle | 12. | the weighted average of the masses of all naturally occuring isotopes of an elementmetal | 14. | The total number of protons and neutrons in the nucleus of an atom | 16. | A vertical column of elements |
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© 2014
PuzzleFast.com, Noncommercial Use Only