BJU Physical Science Ch. 4 Review

The development of the modern periodic table came as a result of:

• scientists attempting to arrange the information known to them.

• scientists recognizing the periodic nature of the elements.

• scientists organizing the elements in a way that relates their position with the structure of the atoms themselves.

• all the above.

The modern periodic table arranges elements according to:

• the elements' atomic masses

• the elements' atomic numbers

• the law of octaves

• triads

Elements in the same _______ on the periodic table have the same number of valence electrons.

• column

• row

• column and row

• period

Where are nonmetals found on the periodic table?

• to the left of the transitional metals

• to the left of the heavy stairstep line

• along the heavy stairstep line

• to the right of the heavy stairstep line

How many valence electrons do the alkaline-earth metals have?

• one

• two

• six

• seven

Uranium, found below the main body of the periodic table, is best classified as a(n):

• inner transition metal

• metalloid

• nonmetal

• transition metal

Refer to a periodic table. What is the family name for the group containing chlorine?

• alkaline-earth metals

• halogens

• mixed group

• noble gases

Refer to a periodic table. Which diagram shows the correct electron dot notation for calcium?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Ancient Greeks thought that all matter in the universe was made of only five elements.

• True

• False

The symbols that represent each element must always use two letters.

• True

• False