Unit B-2, Atoms
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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| state of matter | solid, liquid, gas, plasma
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| solid | rigid structure, strong force of attraction, low particle energy
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| liquid | medium FOA, medium PE
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| gas | low FOA, high PE
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| atom | The smallest element of matter that still has the properties of that element
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| proton | positive charge, found in neucleus
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| neutron | neutral charge, found in neucleus
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| neucleus | center of the atom
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| electron | negative charge, orbits the neucleus
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| electron cloud | Where an electron could be at any given time
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| valence electrons | outer shell electrons
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| Periodic Table of Elements | an organization of the elements
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| reactivity | how well it reacts with other elements
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| atomic number | number of protons
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| mass number | protons + neutrons
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| atomic mass | weighted average mass of an atom of an element
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| element | A substance with the same number of protons
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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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