8th Grade Chemistry Vocabulary
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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| Electron Shell | A specific area where electrons of the same energy level are found
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| Element | A pure substance that cannot be separated into simpler substances by physical or chemical means
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| Atom | The smallest unit of an element that has all of the properties of that element containing a nucleus within an electron cloud
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| Proton | A positively charged subatomic particle in the nucleus of an atom and contributes to the mass of the atom
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| Electron | A negatively charged subatomic particle of the electron cloud; involved in the formation of chemical bonds
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| Neutron | The tiny, very dense, positively charged region in the center of an atom; made up of protons and neutrons
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| Nucleus | The very dense region consisting of protons and neutrons at the center of an atom
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| Atomic Symbol | A one- or two-letter notation used to represent an atom of a particular element
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| Amu unit | Amu stands for atomic mass unit and is used to indicate mass on an atomic or molecular scale
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| Valence electrons | The number of electrons with which a given atom generally bonds or number of bonds an atom forms
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| Electron shells | A grouping of electrons surrounding the nucleus of an atom
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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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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.
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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