Presentation on theme: "Science Starter: Get notes from front.Periodic Table on RIGHT side. Notes on LEFT side. Update table of contents: 14 Periodic Table 1.2 15."— Presentation transcript:
1 Science Starter:Get notes from front.Periodic Table on RIGHT side. Notes on LEFT side. Update table of contents: Periodic Table Periodic Table Families 1.3Send someone from group up to get ALIEN Periodic Table.
2 Science Starter: Go to my website and click on science starter article for TUESDAY! SAVE to desktop-if no laptop see me for paper copy If absent yesterday see me! Update table of contents: 14 Periodic Table Periodic Table Families 1.3 Today’s Objectives: Read closely to learn structure of Periodic Table and begin Color coding PT
3 Science Starter: Elements in a group have… a Science Starter: Elements in a group have… a. A wide range of chemical properties b. The same atomic radius c. Similar chemical properties d. The same number of protonsGo to WED on my WEBSITE if you want to follow with PowerPoint OPEN ISN to 14 PERIODIC TABLE Today’s learning objective-Understand the organization of PT and explain patterns of periods & groups
5 A way of organizing & classifying elements Dmitri Mendeleev-Russian chemistArranged in rows and columns based on repeating patterns of properties & atomic numberColor of chemical symbol indicates state of element at room temperature-white=gas, blue=liquid, black=solidBackground color=whether element is metal, nonmetal, metalloid
6 ColumnsThe vertical (up and down) columns of the periodic table (there are 18) are called groups or families.Elements in the same group or family have similar characteristics or properties.
7 Rows The horizontal rows of the periodic table are called periods. Elements in a period are not alike in properties.The first element in a period is usually an active solid, and the last element in a period is always an inactive gas.
8 RowsAtomic size (number of protons) decreases from left to right across a period.Atomic mass (number of protons) increases from left to right across a period.
9 RowsMetals are on the leftNon-metals are on the right
12 Elements that have not yet been named have temporary 3 letter symbols
13 Color the square for Hydrogen pink. Lightly color all metals yellow.Place black dots in the squares of all alkali metals.1 ALKALI METALSvery reactive metals that do not occur freely in naturemalleable, ductile, good conductors of heat and electricity.Low density; softer than most other metals (can be cut w/ a knife)can explode if they are exposed to water1 outer electronUsed in soap, fertilizers, and medicine
14 not found free in nature Metals; Silver colored Draw a black triangle in each box in the group of alkaline earth metals.ALKLINE EARTH METALSnot found free in natureMetals; Silver coloredvery reactive (but less reactive than alkali metals)2 outer electronsUsed in electronics, antacids, fireworks, x-rays and metal alloys
15 TRANSITION METALS Groups 3-12 Draw black diagonal line across element box of transition metals!TRANSITION METALS Groups 3-12ductile and malleable, shiny, and conduct electricity and heatiron, cobalt, and nickel, are the only elements known to produce a magnetic field.1 or 2 outer electronsUsed in jewelry, wires, coins, metal alloys
16 RARE EARTH ELEMENTS: Lanthanides and Actinides Shade these in RED.many are man-madeTransitions metals-placed at bottom so not too wideLanthanides: shiny & reactiveActinides: ALL RADIOACTIVE & unstableElements are manufactured in a lab
17 are ductile and malleable OTHER METALSare ductile and malleableare solid, have a relatively high density, and are opaqueThey are part of groups
18 METALLOIDS: Trace zigzag line in black than color purple B METALLOIDS: Trace zigzag line in black than color purple B. Si, Ge, As, Sb, Te, Po, Athave properties of both metals and non-metalssome of the metalloids, such as silicon and germanium, are semi-conductors. This means that they can carry an electrical charge under special conditions. This property makes metalloids useful in computers and calculators
19 NON-METALS color these elements green not able to conduct electricity or heat very wellvery brittle, and cannot be rolled into wires or pounded into sheetsexist in two of the three states of matter at room temperature: gases (such as oxygen) and solids (such as carbon).have no metallic luster, and do not reflect light.
20 Group 13: BORON FAMILY uses: cooking, LCD displays, poisons Group 14: CARBON FAMILY uses: graphite, diamonds, plumbing Group 15: NITROGEN FAMILY uses: refrigerant, make-up, medicines Group 16: OXYGEN FAMILY uses: medicines, water treatment, nukes, fungicide, printers, solar panels
21 HALOGENS: Color these ORANGE "halogen" means "salt-former" and compounds containing halogens are called "salts"7 outer level electronsNonmetals, very reactiveexist in all three states of matter:Solid- Iodine, AstatineLiquid- BromineGas- Fluorine, ChlorineUSED in toothpaste, water treatment, thyroid medicinesHALOGENS:Color these ORANGE
22 NOBLE GASES: Color these in BLUE Inert gases; unreactiveNonmetalsFull valence electrons so do NOT bond with othersFound in lights, balloons, electronics