An element's properties can be predicted from its

• number of isotopes.

• number of neutrons.

• atomic mass.

• location in the periodic table.

If a substance is _______________________, it can be pulled or drawn into a wire.

• malleable

• magnetic

• reactive

• ductile

A(n) _______________________ is a postively charged particle in an atom's nucleus.

• neutron

• electron

• proton

• plasma

Which of the following is not a characteristic of most metals?

• brittle

• good conductor

• ductile

• malleable

An element's _______________________ tells the number of protons in its nucleus.

• atomic mass

• atomic number

• chemical symbol

• period

Which group contains the most elements?

• metals

• nonmetals

• metalloids

• noble gases

Elements in each group

• have the same atomic mass.

• have similar characteristics.

• have atomic numbers.

• have the same chemical symbol.

[Nonmetals] are good conductors of heat and electricity.

• True

• False

From left to right in the periodic table, the elements are arranged in order of [decreasing] atomic number.

• True

• False

The mass of a [proton] is about one atomic mass unit.

• True

• False