CHCS 6th Grade Science Chapter 5
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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| Atoms | the building blocks of all matter; made up of protons, neutrons, and elections
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| element | a pure substance; all atoms have the same atomic number
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| nucleus | the center of an atom; contains the protons and the neutrons
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| proton | particle that has a positive charge
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| neutron | particle that has no charge, or is neutral
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| electron | a particle that has a negative charge
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| strong force | this holds the nucleus together, keeping the protons and neutrons together
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| atomic number | tells the number of protons and the number of electrons found in an element
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| atomic mass | the mass of an atom; tells how many protons plus how many neutrons are in an element
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| shells | energy levels where electrons can be found circling the nucleus
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| valence electron | the electrons in the outer most shell of an atom
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| periodic table | a chart that arranges elements into groups by their properties
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| electron energy levels | another name for electron shells; energy levels where electrons can be found circling the nucleus
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| period | a horizontal row of the periodic table; tells how many shells an element has
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| chemical family | a group of elements that have similar properties; vertical columns on the periodic table; tells how many valence electrons each element has
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| groups | another name for chemical family; a group of elements that have similar properties; vertical columns on the periodic table; tells how many valence electrons each element has
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| metal | an element that usually has one, two, or three valence electrons and that is typically shiny, hard, and a good conductor of heat and electricity
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| nonmetal | an element that usually has five, six, or seven valence electrons and that is typically dull, brittle, and a poor conductor of heat and electricity
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| Lewis dot structures | a figure in which dots around and element's symbol represent valence electrons; also called an electron dot diagram
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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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