Presentation on theme: "Warm Up Need notebook, colored pencils, glue and textbook(if you have it) List everything you currently know about the periodic table of elements. Tell."— Presentation transcript:
1 Warm UpNeed notebook, colored pencils, glue and textbook(if you have it)List everything you currently know about the periodic table of elements.Tell me what you would like to know about the periodic table.
4 Dmitri Mendeleev 1) Father of the period table. 2)First to systematically arrange elements3)Elements were arrangedby their atomic massesElements were groupedtogether according totheir similarities*Empty spaces were leftwhere he predictedundiscovered elementsshould go
5 Mendeleev’s Published Periodic Table of Elements Why do you think there are question marks here?
6 Henry MoseleyHe concluded that the number of protons in an atom is its atomic numberIn 1914, his work led to a revision of the periodic table
7 How is the Modern Periodic Table Arranged? Elements are now arranged by their atomic numbersElements are arranged in periods and groups
8 What are Periods in the Periodic Table A horizontal row is called a period
9 A vertical column is called a group What are Groups?A vertical column is called a groupElements in the same group have similar properties and reacts in similar ways!
10 How is the Periodic Table Read? Each square gives particular information about the atoms of an elementAtomicnumberAtomicMass13SymbolAtomic number is thenumber of protons inthe nucleusAverage atomic mass(amu)the number of allisotopes of an elementAl26.981
12 Metal: Elements that are usually solids at room temperature. Most elements are metals.Non-Metal: Elements in the upper right cornerof the periodic table. Their chemicaland physical properties are differentfrom metals.Metalloid: Elements that lie on a diagonal linebetween the Metals and non-metals.Their chemical and physicalproperties are intermediate between the two.
13 What metal is not a solid What are Metals?LocationFound on the left of the zigzag line/staircase on the periodic table (exception Hydrogen)Chemical PropertiesHave few electrons in their outer energy level, thus lose electrons easilyPhysical PropertiesDuctile (easily drawn into a wire), good conductors of heat and electricity, malleable (easily shape), shiny, most are room temperature79Au11Na22.990Image taken from:What metal is not a solid@ room temperature?
14 What are Reactive Metals? Metals that are more likely to undergo a chemical change or reactionAlkali metals (group 1) are the most reactive metalsAlkaline Earth metals (group 2) second most reactive metal group
15 What are Transitional Metals? Groups in the middleGroups 3-12Generally less reactive then other metalsGood conductors of heat and electricity.Some are used for jewelry and currency
16 What are Non-Metals?LocationMost found to the right of the zigzag line/staircase on the periodic tableChemical PropertiesMost have almost full outer energy levels, thus they tend to gain electrons; some have completely full outer levelPhysical Propertiesnot ductile or malleable, not shiny, poor conductors of heat and electricity, most are solid, but some are gas at room temperature17Cl35.453Image taken from:16S32.066Image taken from:
17 What are Halogens?Group 17All are non-metalsVery reactive are often bonded with elements from Group 1form salt compound7 electrons in the outer shell
18 What are Noble / Inert Gases? Group18Non-metals - Exist as gasesNot reactive with other elements8 electrons in the outer shell = Full /stableHelium (He) has only 2 electrons in the outer shell = Full/ stable
19 What are Metalloids?LocationBorder the zigzag line/staircase on the periodic tablesilicon is the most commonFound in semi conductorsExamples: computers, cell phonePhysical Propertieshave properties of both metals and non-metals14Si28.086Image taken from:5B10.811Image taken from:
20 Rare Earth Metals Some are Radioactive The rare earths are silver, silvery-white, or gray metals.Conduct electricityGroup 1Group 18Group 2Group 17
21 Four chemical families of the periodic table: the alkali metals (IA), the alkaline earth metals (IIA), halogens (VII), and the noble gases (VIIIA).Group 1Group 18Group 2Group 17
22 DirectionsRead Color Coding the Periodic Table to fill out Families tiesIdentify the following on your table: Metals, Nonmetals and Metalloids.At the top of your table make a coding key to include the name of the them. Select a color to represent each group and put that color by the name.Metals Non -metals MetalloidsLabel group 1, 2, and your lanthanide and actinides elements See page D in bookTrace the zig-zag line in Black