9 A. Metallic CharacterMetals are elements that are good conductors of electric current and heat.Except for mercury, metals are solid at room temperature.Most metals are solids.Many metals are ductile; that is, they can be bent or drawn in to wires. .The majority of the elements on the periodic table are classified as metals.
10 A. Metallic CharacterNonmetals are elements that are poor conductors of heat and electric current.Nonmetals have low boiling points – many nonmetals are gases at room temperature.Nonmetals that are solids at room temperature tend to be brittle. If they are hit with a hammer, they shatter or crumble.Nonmetals generally have properties opposite to those of metals.
11 A. Metallic CharacterMetalloid elements are located on the periodic table between metals and nonmetals.Metalloids are elements with properties that fall between those of metals and nonmetals.For example, a metalloid’s ability to conduct electric current varies with temperature. Silicon (Si) and Germanium (Ge) are good insulators at low temperatures and good conductors at high temperatures.
12 B. Rows and ColumnsRepresentative ElementsTransition Metals
14 B. Rows and ColumnsEach column in the periodic table is called a Group or Family.The elements in a group have the same number of valence electrons, so members of the same group in the periodic table have similar chemical properties.This pattern of repeating properties is the periodic law.
15 C. Family/Group Names Group 1 Alkali Metals All have 1 valance electronAll form +1 charged ionsHydrogen is NOT a metal and can also form -1 charged ion.One of the most reactive groups on periodic table
16 Family/Group Names Group 2 Alkaline Earth Metals All have 2 valance electronsAll from +2 charged ion
17 Family/Group Names Group 3 to 12 Transition Metals All form positive ions but with different values (+1 to +6)
18 Family/Group Names Group 13 Boron Family All have 3 valance electrons All from +3 charged ionsMixture of metalloids and metals
19 Family/Group Names Group 14 Carbon Family All have 4 valance electrons Form +4 or -4 charged ionMixture of metals, metalloids, and non metals.
20 Family/Group Names Group 15 Nitrogen Family All have 5 valance electronsAll form -3 ionMixture of metals, metalloids, and non metals.
21 Family/Group Names Group 16 Oxygen Family All have 6 valance electrons All form -2 charged ionsMostly nonmetals though 1 metal and one metaloids
22 Family/Group Names Group 17 Halogens All have 7 valance electrons All form -1 charged ionMostly nonmetals though 1 metalloidOne of the most reactive groups on the periodic table
23 Family/Group Names Group 18 Noble Gases All have (except He) have 8 valance electronsMost don’t react at allThey are “noble”All are nonmetalAll are gases at room tempature
24 A. Terms Group # = # of valence e- (except He) Families have similar chemical characteristics .Period # = # of energy levels1A2A3A 4A 5A 6A 7A8A
25 A. Terms Valence Electrons e- in the outermost energy level Representative elements the number of valance electrons equals the ones digitGroup 13 = 3 valance electrons
26 B. Rows and ColumnsEach column in the periodic table of elements is a Group.Elements in group 1 have ___ valence electron.Elements in group 2 have ___ valence electrons.Elements in group 13 have ___ valence electrons.Elements in group 14 have ___ valence electrons.Elements in group 15 have ___ valence electrons.Elements in group 16 have ___ valence electrons.Elements in group 17 have ___ valence electrons.Elements in group 18 have ___ valence electrons.12345678
27 B. Rows and Columns Each row in the table of elements is a Period. 1 2 Elements in period __ have one energy level.Elements in period __ have two energy levels.Elements in period __ have three energy levels.Elements in period __ have four energy levels.Elements in period __ have five energy levels.Elements in period __ have six energy levels.Elements in period __ have seven energy levels.1234567Horizontally Into Periods
28 B. Lewis Dot Diagrams Dots represent the valence e-. Ex.: Sodium Ex.: Chlorine
29 B. Lewis Dot DiagramsStart by putting one dot on each side of elements symbol.Once all 4 side have one dot they can double up
30 Review There are four pieces of information for each element. 1. _______________2. _______________3. _______________4. ______________