Elements

ElementsObjectives

Use a periodic table to name elements, given their symbols

Use a periodic table to write the symbols of elements, given their names

Describe the arrangement of the periodic table

List the characteristics that distinguish metals, nonmetals, and metalloids

ElementsOdd Symbols

ElementsRegions of the Periodic Table of the Elements

ElementsPeriodic Table of the Elements

The vertical columns of the periodic table are called groups, or families

o Each group contains elements with similar chemical properties

The horizontal rows of elements in the periodic table are called periods

o Physical and chemical properties change somewhat regularly across a period

ElementsTypes of Elements

Metal is an element that is a good electrical conductor and a good heat conductor

Properties of metals

o Most are solids at room temperatureo Malleable - they can be hammered or rolled into thin sheets o Ductile - they can be drawn into a fine wire o Conduct electricity and heat well

ElementsTypes of Elements

Gold Copper Aluminum

ElementsTypes of Elements

Nonmetal is an element that is a poor conductor of heat and electricity

Properties of nonmetals

o Many are gases o Solids are brittleo Poor conductors of heat and electricity

ElementsTypes of Elements

Carbon Sulfur Phosphorus Iodine

ElementsTypes of Elements

Metalloid is an element that has some characteristics of metals and some characteristics of nonmetals

Properties of metalloids

o All metalloids are solids at room temperature o Semiconductors of electricity

ElementsTypes of Elements

Noble gases are the elements in Group 18 of the periodic table of the elements

Properties of noble gases

o Generally unreactive o Gases at room temperature

ElementsTypes of Elements