1/19/12
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    1/19/12 1/19/12 Presentation Transcript

    • 1/19 A/B DayLEQ: How are natural substances differentfrom synthetic ones?1. What is solubility?2. What are three things that can change thesolubility of a substance?3. In salt water, what is the solute and what is thesolvent?4. If a scientist puts a bunch of different objects in anoven, which will get the hottest—the object with thelowest specific heat or the object with the highestspecific heat?5. Explain your answer to #4!
    • PRACTICE EOG REFLECTION1. Are you satisfied with your score on the practice EOG?2. Why or why not?3. So far this year, are you doing what you need to do in order to reach our class goal of a 3 or 4?4. If you are, what are three things you need to KEEP doing for our next two units? If you are not, what are three things you need to do better on for the rest of the year?5. What surprised you most about the practice EOG?
    • Let’s Review: Whiteboards
    • PUT THESE IN ORDER FROM OLDEST TO YOUNGEST… A Oldest: C B AC Youngest: B
    • 1. What is the oldest fossil?2. What is the youngest fossil?3. What do we call it when a piece of the fossil record is erased?
    • What are thethree things that happen at DIVERGENT BOUNDARIES?
    • Mid-Ocean Ridges Seafloor Spreading Rift ValleySeafloor Spreading
    • Rift Valley Rift Valley
    • Rift Valley RIFT VALLEY
    • Rift ValleyMid-Ocean Ridges Seafloor Spreading
    • Rift ValleySeafloor Spreading Mid-Ocean Ridge
    • NEW CRUST!Rift Valley
    • Mid-Ocean Ridge
    • RIFT VALLEY
    • Seafloor spreading
    • MID OCEAN RIDGE
    • SUBDUCTION ZONES VOLCANOTRENCH
    • EOG QUESTION:Which of the following describes the law of conservation of matter?a. matter cannot be created and it cannot bedestroyedb. matter is made of everything and everythingis made of matterc. older layers of rock are at the bottom,younger layers of rock are at the topd. all living things are made of elements andcompounds
    • Today’s LEQ: How are natural materials different from synthetic ones?By the end of today, you should be able to…1. Describe the difference between natural and synthetic materials2. Identify natural and synthetic materials on the periodic table
    • Focus Vocabulary87. Natural Chemical88. Synthetic Chemical
    • CONTEXT CLUES:“This material is synthetic. It’s made in a factory by giant machines.”“This synthetic substance can only be found in specific parts of Charlotte. It is not produced naturally around the world.” Stop and Jot: Write your own definition of
    • Draw this in your notes:Natural SyntheticChemical Chemical
    • Synthetic Chemical:• Chemicals that are manmade and do not exist in nature• Examples: steel, bronze, plastic, and all elements with an atomic # of 95 or higher
    • Natural Chemical:• Chemicals that exist in nature• Examples: water, gold, oxygen
    • BOTH:• Made of atoms• Forms of matter• Make up all living and non-living things
    • Natural Synthetic
    • SORT THESE!! Silver
    • EOG QUESTION:Which statement applies to all naturalelements? a. they are all found on earth b. they exist in nature c. they are made by humans d. they are all metals
    • How it’s made: Glass cookware, bars of soap, steel drums, and firefighter jackets
    • Summarizer: A science teacher tells his students that all natural chemicals are not harmful and all synthetic chemicals are highly dangerous.Based on what you know about natural andsynthetic chemicals, write 3-5 sentences to the science teacher to explain whether you agree or disagree with this statement and WHY.