38101844
Description
Flashcards by Greta Neal, updated more than 1 year ago
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Created by Greta Neal
about 3 years ago
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| Question | Answer |
| Fusion | fusing together, put together, 2 or more nuclei collide at very high energy and fuse together |
| Fission | splitting apart, neutron slams into a larger atom, forcing it to excite and split into two smaller atoms |
| Supernova | the brilliant explosion of a dying supergiant star |
| Big bang created... | ... hydrogen & helium |
| Supernova creates... | ... elements past iron |
| Small stars make... | ... carbon, nitrogen & oxygen |
| Big stars make... | ... up to iron |
| Particulate | itty bitty, can't see even with microscope |
| Macroscopic | Big, can see |
| Microscopic | small, can see with microscope |
| Gas | independent of one another, random movement |
| Liquid | particles move freely, but clump |
| Solid | particles vibrate in fixed positions |
| Key players in atomic model | Dalton, J.J. Thomson, Rutherford, Bohr, Schrodinger |
| Isotope | different variation of the same element, the mass can vary due to neutrons |
| Charge | number of protons + electrons. More protons = positive. More electrons = negative. |
| Ion | different amount of protons and electrons = has a charge |
| Proton | positive, tells you the element |
| Mass Number | Protons + neutrons |
| Atomic Number | number of protons = tells you the element |
| Neutron | subatomic particle in nucleus, stability, no charge, neutral, positive and negative cancels out |
| Electron | negative subatomic particle, weighs 0 |
| Atomic number stands for... | ... how many protons the atom has |
| Atomic symbol is... | ... letter that stands for which atom it is |
| atomic weight refers to... | ... protons added to neutrons |
| Bohr Models | |
| Electron configuration | distribution of electrons of an atom or molecule in atomic or molecular orbitals |
| Atomic radius | |
| Ionization energy | energy it takes to remove or add electrons from an atom |
| Electronegativity | chemical property that describes the tendency of an atom or functional group to attract electrons towards itself |
| Valence electrons | electron in the outer shell associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed |
| Why would an element want to gain electrons? | To completely fill the outer ring (8). |
| Why would an element want to lose electrons? | If there is an outer ring with only 1 electron, and the ring previous is full, it would want to lose it to have a full outer shell. |
| A group is... | ... up and down |
| A period is... | ... left and right |
| Why does radius increase as you go down the periodic table? | There is an addition of rings |
| Why does ionization energy increase as you go across the rows? | If all rings are filled, they keep all their electrons, higher energy and hold on electrons |
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