chapter 6.1 organizing elements on the periodic table
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| 1829 German chemist named ________ organized elements into a table | J.W. Dobereiner
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| group of three elements with similar properties | triad
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| example triad | chlorine, bromine, iodine
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| 1869 Russian chemist _____________ published a table of elements | Dmitri Mendeleev
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| published later in the same year that Mendeleev published his table; this German chemist receives little notice for his work | Lothar Meyer
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| Mendeleev arranged the elements in his table in order of __________ | increasing atomic mass
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| Mendeleev left gaps in his table, predicting that ________ & ________ would be discovered to fill them | gallium & germanium
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| 1913, this British chemist ___________ recognized that Mendeleev had a few elements out of order and reordered the elements based on their _____________ | Henry Moseley, increasing atomic number
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| on the Periodic Table, rows are called | periods
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| on the Periodic Table, columns are called | groups
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| each period corresponds to a _________ | principal energy level
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| period 1 corresponds to the _____ energy level | first or 1s
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| period 2 corresponds to the ______ energy level | second or 2s & 2p
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| the elements within a column or group have simlar properties. This pattern of properties repeats as you move from one period to the next. This is called the _______________. | periodic law
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| 80% of the elements on the periodic table are classified as ____ | metals
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| metals are good __________ of heat and electricity | conductors
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| all of the metals are _______ except for ________ which is a ______________ | solids, mercury, liquid
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| to the upper right of the periodic table are found the _____________ | non-metals
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| many of the non-metals are _________, with the exception of ________ which is a liquid | gases, bromine
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| elements found on either side of the stair-step line are called ___________ | metalloids
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| metalloids have properties of both __________ and ____________ | metals & non-metals
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| a common metalloid element is _________ and is the primary component of ___________; this element is used in making computer chips and glass | silicon, sand
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| identify this element as a metal, non-metal or metalloid: gold | metal
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| identify this element as a metal, non-metal or metalloid: sulfur | non-metal
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| identify this element as a metal, non-metal or metalloid: barium | metal
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| name two elements that have similar properties to sodium | lithium, potassium, rubidium, cesium, francium
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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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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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