Periodic Table

In the modern periodic table, how are elements organized?

• by the date each element was discovered

• by increasing atomic mass

• by increasing atomic number

• by alphabetical order of their symbols

If a highly-reactive metal with one valence electron is discovered, in which group would the element best fit?

Use Periodic Table notes, if needed. If missing this information, please add to reference section of your binder.

• group 1

• group 2

• group 17

• group 18

In which groups did Mendeleev most likely place highly-reactive elements?

• group 1 (IA) and group 17 (VIIA)

• group 1 (IA) and group 18 (VIIIA)

• group 2 (IIA) and group 18 (VIIIA)

• group 2 (IIA) and group 17 (VIIIA)

Which best explains how the periodic table is used to identify properties of elements?

• by the color and shape of the elements

• by the number of electrons in the elements

• by the group in which the elements are located

• by the atomic mass of the elements

On the periodic table, where are the most reactive metals found?

• In the bottom rows, connecting the main table to the separated rows

• In the column on the far right side

• In the column on the far left side

• In the top row

What physical property is a characteristic of all the elements in the group located in the rightmost column of the periodic table?

• very high melting point

• gas at room temperature

• good conductor of electric current

• extremely brittle solild at room temperature

Which of these is one similarity of the elements in the first group of the periodic table. Use Periodic Table Key notes, if needed. If missing this information, please add to reference section of your binder.

• elements in the group have similar atomic masses

• elements in the group have the same number of electrons

• elements in the group are very unreactive metals

• elements in the group react with oxygen in similar ways

Which BEST describes the reactivity of metals when moving from left to right on the periodic table? Use Metals, Metalloids, and Nonmetals notes, if needed. If missing this information, please add to reference section of your binder.

• they become less reactive

• they become more reactive

• the reactivity stays the same

• the reactivity decreases, then increases

Why is calcium in group 2, period 4 on the periodic table?

• Calcium, like all group 2 elements, is reactive and a solid at room temperature.

• Calcium, like all group 2 elements, is nonreactive and a gas at room temperature.

• Calcium, like all period 4 elements, is nonreactive and a gas at room temperature

• Calcium, like all period 4 elements, is reactive and a solid at room temperature.

Elements in the periodic table of the elements are organized into columns (groups/families) and rows (periods). The columns are organized to show the _______. Use Periodic Table notes, if needed. If missing this information, please add to reference section of your binder.

• similarities of the reactivity in groups.

• number of neutrons in a column.

• sum of atomic weights per column.

• amount of radioactivity in each group.