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9/16/13. CIS4 Chem talk Pages Make a table Pg 42-43 Word- meaning –example/picture C1S6 Chem talk notes Pg 63-64. C1S4 Properties of Matter Pg 42-43. Chapter 1 Movie Special Effects. Section 6 Metals and Nonmetals (pp.60-67) . Atlantic Coast High School.
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CIS4 Chem talk Pages Make a table Pg 42-43 Word- meaning –example/picture C1S6 Chem talk notes Pg 63-64
Chapter 1 Movie Special Effects Section 6 Metals and Nonmetals (pp.60-67) Atlantic Coast High School
What do you think? (WDYT) • Why are frying pans made of metal and baking dishes often made of glass or ceramic? • Could a baking dish be made of metal? Could a frying pan be made of glass or ceramic?
Investigate • Metals vs. nonmetals
C1S6 Chem Talk Pages 63-64 Read the section. • Make three columns and list the properties of metals,nonmetals and metalloids.
Chem Talk Properties of Metals • Metals are good conductors of heat and electricity • Metals are malleable • Metals are ductile • Metals have high tensile strength • Metals have luster
Chem Talk Mercury, Hg, is the only metal that exists as a liquid at room temperature Copper, Cu, is a relatively soft metal, and a very good electrical conductor.
Chem Talk Properties of Metalloids • They have properties of both metals and nonmetals. • Metalloids are more brittle than metals, less brittle than most nonmetallic solids • Metalloids are semiconductors of electricity • Some metalloids possess metallic luster
Chem Talk Alloys An alloy is a substance composed of two or more metals, or of a metal or metals with a nonmetal, and still maintain the characteristic properties of metal • Common Alloys • Bronze - probably the first intentionally created alloy • Steel • Brass • Sterling silver (92.5% silver, the rest usually copper) • 10K (or 12K, or 14K, or anything under 24K) gold • The "nickel" nickels are made of (mostly copper)
Chem Talk Nonmetals • Nonmetals are poor conductors of heat and electricity • Nonmetals tend to be brittle • Many nonmetals are gases at room temperature We will focus on nonmetals later… Carbon, the graphite in “pencil lead” is a great example of a nonmetallic element.
Checking Up (CUQ) p 64 1. Why is it important to prevent the oxidation of metals used in construction? 2. Explain the meaning of an alloy. 3. Why are alloys used? 2 column format!!! Question on left, answer on right
What do you think now?(WDYTN) • Using what you now know about metals and nonmetals, answer these questions. Then, classify the following unknown element as a metal or a nonmetal and explain your reasoning. • Unknown element: nonconductive, brittle, and nonreactive to oxygen.
Chem To Go (CTG) Questions 1-6 p 66
Inquiring Further (IF) • Missed lab? Complete Inquiring further on page 67…. • If you did do the lab, you can still complete this “IF” for extra credit
Home work • Watch the videos on physical and chemical properties and create a T-chart to show the differences between the two. • Take down notes in your own format from the power points.(3 PPoints).