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Periodic Table 2
CAVA chem 302 303 S1U3L2 Periodic Table Continued
Question | Answer |
---|---|
The periodic table has changed dramatically since the time of [...]. | The periodic table has changed dramatically since the time of Mendeleev. |
In the modern periodic table, the elements are organized by [...] instead of atomic mass. | In the modern periodic table, the elements are organized by atomic number instead of atomic mass. |
If you know the atomic number, you also know the number of [...] in an electrically neutral atom—the numbers are equal. | If you know the atomic number, you also know the number of electrons in an electrically neutral atom—the numbers are equal. |
Valence electrons are the electrons in the [...] orbital of an atom. | Valence electrons are the electrons in the outermost (highest energy) orbital of an atom. |
Since chemical reactivity depends largely on the number of [...] electrons, the periodic table is used to predict the reactivity of elements. | Since chemical reactivity depends largely on the number of valence electrons, the periodic table is used to predict the reactivity of elements. |
The periodic table provides information about the atoms of individual [...]. | The periodic table provides information about the atoms of individual elements. |
Generally, each element is identified by its [...], atomic number, and average atomic mass. | Generally, each element is identified by its chemical symbol, atomic number, and average atomic mass. |
SOME (but not most) periodic tables give [...]-coded information such as the physical state at room temperature of individual elements. | SOME (but not most) periodic tables give color-coded information such as the physical state at room temperature of individual elements. |
A period is a [...] of the periodic table. | A period is a horizontal row of the periodic table. |
As you travel across an individual period from left to right, the [...] increases. | As you travel across an individual period from left to right, the atomic number increases. *Note: The atomic mass does not always increase, there are times when it actually goes down between two elements. |
A group is a [...] of the periodic table. | A group is a vertical column of the periodic table. |
there are different ways to name the groups. One system numbers the groups from 1 to [...]. | there are different ways to name the groups. One system numbers the groups from 1 to 18. |
Noble gases are Group [...]. | Noble gases are Group 18. |
Elements in the same group have the same number of [...] electrons. | Elements in the same group have the same number of valence electrons. |
Elements in the same group have many of the same [...] properties and react similarly. | Elements in the same group have many of the same chemical properties and react similarly. |
The periodic table can be broken into larger (than groups) [...] of elements with (fairly) similar properties. | The periodic table can be broken into larger (than groups) blocks of elements with similar properties. |
There are four blocks that organize the periodic table into structural regions: the [...], [...], [...], and [...] -blocks. | There are four blocks that organize the periodic table into structural regions: the s-, p-, d-, and f -blocks. |
Key to remembering the block names and order "[...]" | Key to remembering the blocks "Some People Do Fine... on the test" |
Generally, each element is identified by its chemical symbol, [...], and average atomic mass. | Generally, each element is identified by its chemical symbol, atomic number, and average atomic mass. |
Generally, each element is identified by its chemical symbol, atomic number, and [...]. | Generally, each element is identified by its chemical symbol, atomic number, and average atomic mass. |