8th Grade Chemistry Chapters 3 and 4 Vocab
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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Atom | The smallest particle that can be considered an element.
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Element | A substance that cannot be broken down into any other substances by chemical or physical means.
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Nucleus | The central core of an atom which contains protons and neutrons.
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Atomic Number | The number of protons in the nucleus of an atom.
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Atomic Mass | The average mass of all the isotopes of an element.
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Proton | The positive (+) charged particles that are found in the nucleus of an atom.
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Neutron | A small particle in the nucleus of an atom, with NO electrical charge.
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Electron | The negatively (-) charged particle that moves around the outside of the nucleus of an atom.
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Isotope | An atom with the same number of protons and a different number of neutrons from other atoms of the same element.
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Ion | An atom or group of atoms that has become electronically charged.
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Valence Electrons | The electrons that are in the highest energy level of an atom.
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Malleable | A material that can be hammered or rolled into flat sheets.
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Luster | The way a mineral reflects light from its surface. (Shiny)
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Ductile | A metal that can be pulled out into a long wire.
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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.
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.
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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