Chapter 15 Elements and the Periodic Table: Study Guide

A way of organizing the elements based on their chemical properties is the:

• energy level

• periodic table

• nucleus

• isotope

An atomic mass unit is the approximate mass of a single:

• electron

• proton

• carbon atom

• carbon molecule

Of the following elements, the one most essential to life on Earth is:

• oxygen

• iron

• carbon

• silicon

Materials that allow electricity to flow through easily are known as:

• electrical conductors

• thermal conductors

• insulators

• All of the above

The most abundant element in Earth’s crust is:

• oxygen

• silicon

• carbon

• nitrogen

Most of the elements in the periodic table can be described as:

• metals

• nonmetals

• metalloids

• halogens

A period’s number on the periodic table corresponds to the number of

• electrons an atom in the period can accept when reacting to form compounds.

• energy levels of the atoms in the period.

• compounds that may be formed by an element in the period.

• neutrons in the nuclei of atoms in the period.

Characteristics of non-metals include all of the following EXCEPT:

• ductile

• brittle

• poor conductors

• dull

The location of metals on the periodic table is on the:

• left

• top

• right

• bottom

An atomic mass unit is the approximate mass of a single:

• electron

• proton

• carbon atom

• neutron