Science Chapter 5 The Periodic Table

Mendeleev studied the properties of the elements and looked for

• electrons

• ions

• patterns

• protons

In his version of the periodic table, Mendeleev based his arrangement of the elements on an element's

• atomic number

• name

• chemical symbol

• atomic mass

The order of elements in the modern periodic table is ased on an element's

• atomic number

• name

• chemical symbol

• atomic mass

Elements within the same group in the periodic table have similar properties because they have the same number of

• protons

• neutrons

• ions

• valence electrons

Elements in a family often have a similar

• appearance

• atomic mass

• number of total electrons

• number of total protons

Ionization refers to the process of

• changing periods

• losing or gaining protons

• turning lithium into fluorine

• losing or gaining electrons

Elements that share properties of both metals and nonmetals are called

• ions

• periods

• semiconductors

• valences

Which statement about the alkali metals is correct?

• They are located in the left-most column of the periodic table

• They are extremely nonreactive

• They are usually gases

• They form negative ions with a 1- charge

Which statement about noble gases is correct?

• They form compounds with very bright colors

• They exist as single atoms rather than as molecules

• They are highly reactive with both metals and nonmetals

• They are extremely rare in nature

Which element is a semiconductor?

• carbon

• silicon

• sodium

• uranium