hard
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Nucleus contains | protons and neutrons, + charge, heavy, small, and dense
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| cloud is... | much larger than a nucleus
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| orbitals | varies on the shape of an electron
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| prtotons | +1 charge, heavy mass, located on nucleus
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| Neutron | 0 charge, heavy mass, located in the nucleus
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| Electron | -1 charge, light and located on the electron cloud
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| Atomic number | # of protons, identifies which element an atom is
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| Mass number | # of protons and neutrons
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| Isotopes | same # of protons different number of neutrons
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| Periodic Table | Developed by Dmitri Mendeleev in 1869
Originally ordered by mass
today ordered by atomic number
ordered left to right by increasing atomic #
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| Atomic mass | Not the same as a mass number
average mass of one atom of the element
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| protons | same as atomic number
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| neutrons | maass#-protons
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| electrons | same as atomic number
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| metal | Thermal/electricity (allows heat and electricity to travel through
Malleable,ductile
high density
lustrous(shiny)
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| Semimetal | A.K.A metalloids
properties of both nonmetals and metals
often are semi conductors
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| Organization | periods horizontal rows (left and right)
groups vertical (up and down)
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| group 1 | Alkali metals
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| group 2 | Alkalin earth metals
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| group 3-12 | transition metals
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| group 16 | chalcogens
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| group 17 | halogens
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| group 18 | nobel gases
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| valence electrons | electrons in the outer most shell
atoms can have up to 8 valence electrons
based on group of the periodic table
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| octet rule | atoms want to have 8 valence electrons
atoms can gain, lose, or share valence electrons
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| Atomic radius | The size of an atom as determined by the size of it electron cloud
increase in size from top to bottom
decrease in size from left to tight
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| Ionic Radius | Cations-+ ions (smaller)
Anions- -ions (larger)
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| Ionization energy | atoms ability to attract electrons in a chemical bond
decreases from top to bottom
increases from left to right
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
cyn_dinh
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