Chapter 5 vocabulary for 7th Grade Science
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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Periodic (Sec.1) | Describes something that occurs or repeats at regular intervals
(Repeats Regularly)
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Periodic Law (Sec.1) | The law that states that the repeating chemical and physical properties of elements change periodically with the atomic number of elements.
(The elements properties [physical and chemical] change with the atomic number.)
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Period (Sec.1) | In chemistry, a horizontal row of elements in the periodic table.
(Elements going across)
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Group (Sec.1) | A vertical column of elements in the periodic table; elements in a group share chemical properties.
(Elements going up and down)
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Alkali Metal (Sec.2) | One of the elements of group 1 of the periodic table. (Lithium, sodium, potassium, rubidium, cesium, and francium)
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Alkali-earth metal (Sec.2) | One of the elements of group 2 of the periodic table. (Beryllium, magnesium, calcium, strontium, barium, and radium.)
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Halogen (Sec.2) | One of the elements of group 17 of the periodic table. (Fluorine, chlorine, bromine, iodine, and astatine); halogens combine with most metals to form salts.
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Nobel Gas (Sec.2) | One of the elements of group 18 of the periodic table. (helium, neon, argon, krypton, xenon, and radon); noble gases are nonreactive.
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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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