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Periodic Table And Friends
20
proton: positive charged
electron: negative charged particle found in orbit around the nucleus
atomic number: is the smaller of the two numbers in an element box- is a whole number
neutron: neutral particle found in the nucleus
atomic mass: is the total of the protons and neutrons in an atom
atom: The smallest unit of matter that can exist of an element.
element: A substance that cannot be broken down into simpler substances by chemical means
compound: A molecule containing two or more different atoms bound together
chemical symbol:A one-or two-letter abbreviation for the name of an element
group: Columns on the periodic table of elements. These are ordered according to the numbers of valence electrons in the outer shells of the atoms for the elements represented.
molecule: A group of atoms, usually but not always representing more than one element, joined by chemical bonds.
periods: Rows of the periodic table of elements
valence electrons: Electrons that occupy the highest energy levels in an atom. These are the electrons involved in chemical bonding.
period: row horizontally
alkali metals: very reactive metals which do not occur freely in nature.1 electron in outer shell
alkaline earth metals: next reactive metals, found in earths crust but not in elemental form. 2 electrons in outer shell
transition metals: metals with varying reactivities. Greater density than Group 1 or 2 elements.1-2 electrons in outer shell
noble gases: non-metals, non reactive. 8 electrons in outer shell
halogens: non-metals, very reactive. 7 electrons in outer shell
oxygen: element needed to breathe, specifically a gas
Periodic Table And Friends
Across:6. | neutral particle found in the nucleus | 7. | non-metals, very reactive. 7 electrons in outer shell | 8. | negative charged particle found in orbit around the nucleus | 10. | next reactive metals, found in earths crust but not in elemental form. 2 electrons in outer shell | 13. | element needed to breathe, specifically a gas | 16. | row horizontally | 18. | very reactive metals which do not occur freely in nature.1 electron in outer shell | 19. | Columns on the periodic table of elements. These are ordered according to the numbers of valence electrons in the outer shells of the atoms for the elements represented. | 20. | metals with varying reactivities. Greater density than Group 1 or 2 elements.1-2 electrons in outer shell |
| | Down:1. | A one-or two-letter abbreviation for the name of an element | 2. | Rows of the periodic table of elements | 3. | Electrons that occupy the highest energy levels in an atom. These are the electrons involved in chemical bonding. | 4. | positive charged | 5. | The smallest unit of matter that can exist of an element. | 9. | A molecule containing two or more different atoms bound together | 11. | is the smaller of the two numbers in an element box- is a whole number | 12. | non-metals, non reactive. 8 electrons in outer shell | 14. | A substance that cannot be broken down into simpler substances by chemical means | 15. | is the total of the protons and neutrons in an atom | 17. | A group of atoms, usually but not always representing more than one element, joined by chemical bonds. |
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© 2014
PuzzleFast.com, Noncommercial Use Only
Periodic Table And Friends
Across:6. | neutral particle found in the nucleus | 7. | non-metals, very reactive. 7 electrons in outer shell | 8. | negative charged particle found in orbit around the nucleus | 10. | next reactive metals, found in earths crust but not in elemental form. 2 electrons in outer shell | 13. | element needed to breathe, specifically a gas | 16. | row horizontally | 18. | very reactive metals which do not occur freely in nature.1 electron in outer shell | 19. | Columns on the periodic table of elements. These are ordered according to the numbers of valence electrons in the outer shells of the atoms for the elements represented. | 20. | metals with varying reactivities. Greater density than Group 1 or 2 elements.1-2 electrons in outer shell |
| | Down:1. | A one-or two-letter abbreviation for the name of an element | 2. | Rows of the periodic table of elements | 3. | Electrons that occupy the highest energy levels in an atom. These are the electrons involved in chemical bonding. | 4. | positive charged | 5. | The smallest unit of matter that can exist of an element. | 9. | A molecule containing two or more different atoms bound together | 11. | is the smaller of the two numbers in an element box- is a whole number | 12. | non-metals, non reactive. 8 electrons in outer shell | 14. | A substance that cannot be broken down into simpler substances by chemical means | 15. | is the total of the protons and neutrons in an atom | 17. | A group of atoms, usually but not always representing more than one element, joined by chemical bonds. |
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© 2014
PuzzleFast.com, Noncommercial Use Only