Atom and Periodic Table Review

An element's properties can be predicted from its

• number of isotopes.

• number of neutrons.

• atomic mass.

• location in the periodic table.

The _______________________ model of an atom is a ball of positive charge with negatively charged electrons embedded in it.

• Bohr

• Thomson

• Rutherford

• Dalton

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

A(n) _______________________ has some of properties of both metals and nonmetals.

• alkaline earth metal

• noble gas

• metalloid

• alloy

Which group contains the most elements?

• metals

• nonmetals

• metalloids

• noble gases

What contribution did Dalton make to atomic theory?

• He discovered that every atom was positively charged.

• He discovered that every element consisted of one type of atom.

• He discovered that atoms had nuclei.

• He discovered that atoms could be divided into smaller parts.

Elements in each group

• have the same atomic mass.

• have similar characteristics.

• have atomic numbers.

• have the same chemical symbol.