chapter 2 science 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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| alkali metals | lithium, sodium, potassium, rubidium, cesium, and francium.
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| alkaline earth metals | beryllium, magnesium, calcium, strontium, barium, and radium.
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| atomic mass | expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom.
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| atomic number | the number of protons in the nucleus of an atom
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| Bohr model | positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus
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| chemical symbol | A chemical symbol is a code for a chemical element. It is usually derived from the name of the element, often in Latin.
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| electron shell | an orbit of electrons around an atom's nucleus.
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| halogens | fluorine, chlorine, bromine, iodine, and astatine.
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| metal | a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity.
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| metalloid | properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors.
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| multiple ion charge | for some transition metals and some non-metals, they can have more than one charge.
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| noble gases | helium, neon, argon, krypton, xenon, and radon,
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| non-metal | do not exhibit metallic properties, generally located in the upper righthand corner of the Periodic Table.
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| valence electron | mostly can only be in the outermost electron shell. In a transition metal, a valence electron can also be in an inner shell.
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| valence shell | can only be the outermost electron shell. In a transition metal, a valence shell can also be an inner shell.
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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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