CAVA Chem302/303 S1U3 The Periodic Table / Law
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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| Organizing information into understandable [...] makes it easier to access that information. | Organizing information into understandable patterns makes it easier to access that information.
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| The periodic table shows the elements and their [...], symbol, and average atomic mass. | The periodic table shows the elements and their atomic number, symbol, and average atomic mass.
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| Elements with similar [...] are grouped together in the periodic table. | Elements with similar chemical properties are grouped together.
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| [...] was the first person credited with arranging the elements into an early periodic table. | Mendeleev was the first person credited with arranging the elements into an early periodic table.
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| In 1869, a Russian chemist named Dmitri [...] successfully organized the elements into a single table. | In 1869, a Russian chemist named Dmitri Mendeleev successfully organized the elements into a single table.
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| Much of Mendeleev's data revolved around the [...] of atoms of an element; therefore, the table was arranged in that way. | Much of Mendeleev's data revolved around the atomic masses of atoms of an element; therefore, the table was arranged in that way.
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| Mendeleev arranged his periodic table into [...] and periods. | Mendeleev arranged his periodic table into groups and periods.
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| [...] of the periodic table are called groups or families. | columns of the periodic table are called groups or families.
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| [...] of the periodic table are called periods. | rows of the periodic table are called periods.
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| Elements in the same group (or family) have similar [...] . | Elements in the same group (or family) have similar properties.
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| Mendeleev recognized that certain physical properties [...] about every eighth element. | Mendeleev recognized that certain physical properties repeated about every eighth element. 'Periodic' refers to this repetition.
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| Mendeleev's periodic table could also be used to [...] the properties of unknown elements. | Mendeleev's periodic table could also be used to predict the properties of unknown elements.
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| The periodic table of today has elements arranged by [...]. | The periodic table of today has elements arranged by atomic number.
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| atomic mass *generally* increases as [...] increases... but there are exceptions! | atomic mass generally increases as atomic number increases... but there are exceptions!
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| The [...] law states that if the elements are arranged by atomic number, there will be repeating patterns of the properties of the elements. | The periodic law states that if the elements are arranged by atomic number, there will be repeating patterns of the properties of the elements.
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| [...]: appearing or occurring at intervals. (example: the same properties showed up every 8 elements when Mendeleev listed elements by atomic mass) | Periodic: appearing or occurring at intervals. (example: the same properties showed up every 8 elements when Mendeleev listed elements by atomic mass)
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| It is possible to predict the physical and chemical properties of elements based on their [...] on the periodic table. | It is possible to predict the physical and chemical properties of elements based on their location on the periodic table.
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| The modern periodic table is arranged similarly to early versions. (elements are now listed in order of [...]; not atomic mass) | The modern periodic table is arranged similarly to early versions. (elements are now listed in order of atomic number; not atomic mass)
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| The atomic number of an element is the number of [...]in its nucleus. | The atomic number of an element is the number of protons in its nucleus.
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| The atomic number of an atom tells you NOTHING about the number of [...] in its nucleus. | The atomic number of an atom tells you NOTHING about the number of neutrons in its nucleus.
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| The number of protons in the nucleus [...] which element it is. | The number of protons in the nucleus DEFINES which element it is.
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| The periodic table shows the elements and their atomic number, [...], and average atomic mass. | The periodic table shows the elements and their atomic number, symbol, and average atomic mass.
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| The periodic table shows the elements and their atomic number, symbol, and [...]. | The periodic table shows the elements and their atomic number, symbol, and average atomic mass.
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| Mendeleev arranged his periodic table into groups and [...]. | Mendeleev arranged his periodic table into groups and periods.
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| columns of the periodic table are called [...] or families. | columns of the periodic table are called groups or families.
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| rows of the periodic table are called [...]. | rows of the periodic table are called periods.
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| [...] are up and down (think of the ones that hold up buildings) | Columns are up and down (think of the ones that hold up buildings)
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| [...] are side-to-side (think of seats in a theater). | Rows are side-to-side (think of seats in a theater).
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| The periodic law states that if the elements are arranged by [...], there will be repeating patterns of the properties of the elements. | The periodic law states that if the elements are arranged by atomic number, there will be repeating patterns of the properties of the elements.
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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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