Periodic Table

Which particle is located in the cloud region of the atom?

• electron

• neutron

• nucleus

• proton

The atoms in Group A are different from the atoms in Group B because only the atoms in Group A have ____________.

• their outer energy levels filled with electrons

• three energy levels of electrons

• electron arrangements typical of metals

• electron arrangements typical of nonmetals

Alkali metals belong to a group of elements whose atoms have only one electron in their outer energy level. According to this definition, which of these is an atom of an alkali metal?

• F

• G

• H

• J

According to this chemical formula, all of the following elements are found in phosphoric acid EXCEPT ______.

• hydrogen

• oxygen

• phosphorus

• potassium

Which of the following is not a subatomic particle?

• electron

• neutron

• nucleus

• proton

Which of these graphs best represent the data being shown?

• A

• B

• C

• D

This chart gives the results of an experiment testing physical and chemical properties of elements. A fifth element also was tested. It did not conduct electricity, it reacted with alkali metals, and it was a gas. This element behaved most similarly to

• Element 1

• Element 2

• Element 3

• Element 4

What term describes the Group 2 elements beryllium, magnesium, and calcium?

• alkaline earth metals

• alkali metals

• lanthanides

• transition metals

To which major group do these elements belong?

• actinides

• lanthanides

• metalloids

• transition metals

Which of the following is the most reactive of all metals?

• alkaline earth metals

• alkali metals

• lanthanides metals

• actinide metals