ELECTRONS AND ELECTRON ARRANGEMENTS ACTIVITATING STRATGEY: LOOK AT THE SPARKLERS DEMONSTRATED. WHY DO THEY HAVE DIFFERENT COLORS? THE ELECTROMAGNETIC SPECTRUM: VISIBLE LIGHT: HOW IS “LIGHT” PRODUCED? DESCRIBE AN “EXCITED ELECTRON” DESCRIBE AN ELECTRON IN THE “GROUND STATE” GPS: SPS4 STUDENTS WILL INVESTIGATE THE ARRANGEMENT OF THE PERIODIC TABLE a. DETERMINE THE TRENDS OF THE FOLLOWING *NUMBER OF VALENCE ELECTRONS *LOCATION OF METALS, NONMETALS AND METALLOIDS *PHASES AT ROOM TEMPERATURE *TYPES OF IONS FORMED BY REPRESENTITIVE ELEMENTS b.USE THE PERIODIC TABLE TO PREDICT THE ABOVE PROPERTIES FOR REPRESENTATIVE ELEMENTS. DMITRI MENDELEEV: CONTRIBUTION TO SCIENCE: 1 HOW WAS MENDELEEV’S PERIODIC TABLE ARRANGED? HOW IS THE MODERN PERIODIC TABLE ARRANGED? WHY DIDN’T MENDELEEV ARRANGE HIS TABLE THIS WAY? STATE THE PERIODIC LAW: PERIODS: HOW MANY: VARIATION ACROSS A PERIOD: THE MOST REACTIVE METALS: THE MOST REACTIVE NONMETALS: ASSESMENT: LIST THE PERIOD TO WHICH EACH OF THE FOLLOWING BELONGS: STRONTIUM:_____ IRON______ RADON______ ANTIMONY______ HOW MANY ELEMENTS ARE IN PERIOD 4?__ HOW MANY ELEMENTS ARE IN PERIOD 6?_ GROUPS AKA FAMILIES: HOW MANY? SIMILARITIES BETWEEN ELEMENTS IN THE SAME GROUP: VALENCE ELECTRONS: REACTIVITY PATTERN WITHIN A GROUP: METALS (LEFT SIDE OF TABLE) NONMETALS (RIGHT SIDE OF TABLE) 2 REPRESENTATIVE GROUPS ALKALI METALS ALKALINE EARTH METALS BORON FAMILY CARBON FAMILY NITROGEN FAMILY OXYGEN FAMILY HALOGENS NOBLE GASES GROUP # LIST OF ELEMENTS IN GROUP # OF VALENCE ELECTRONS KEY FACTS IMPORTANT PROPERTIES AND REACTIVITY USES THREE CLASSES OR CATEGORIES OF ELEMENTS ON THE PERIODIC TABLE METALS NONMETALS METALLOIDS LOCATION EXAMPLES AND USES PROPERTIES 3