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Properties of Water Lab

Properties of Water Lab. 9 stations in 45 min. Instructions. Lab Safety You will wear safety goggles You will read all procedural steps beforehand You will leave each station tidy for the next group Stations #1-8 are explored by you Station #9 data has been collected by Ms. Anthony

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Properties of Water Lab

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  1. Properties of Water Lab 9 stations in 45 min

  2. Instructions • Lab Safety • You will wear safety goggles • You will read all procedural steps beforehand • You will leave each station tidy for the next group • Stations #1-8 are explored by you • Station #9 data has been collected by Ms. Anthony • Record the data in the table provided • Hand-in: • Properties of Water pre-lab worksheet (assigned for HW) • Completed lab package (observation sheet and discussion questions)

  3. Station 9 – Testing the specific heat of water vs. oil Oil 100mL • Procedure: • Temperature at baseline • for both liquids – 24oC • 2. Recorded temp at 2 & 4 minutes • 3. Removed from heat and placed in • an ice bath. • 4. Recorded temp at • 6, 8, 10, 12 & 14 minutes Water 100mL Hot plate (med. Setting)

  4. Observation Table Change in temperature of water and vegetable oil over 14 minutes at various heat inputs *Put in cooling bath

  5. Essential Questions: • What is the relationship between atoms, bonding & molecular polarity?  mini-task • Why is water an essential component of all living systems?  Properties of water lab

  6. Biological Macromolecules SBI4UBIOCHEMISTRY DESTINATION GRADUATION!!! Ms. Anthony

  7. Essential Questions: • What are the 4 main types of biological macromolecules and what is their function within cells? • How does the structure of each macromolecule contribute to their function within cells?

  8. Carbon: The Central Atom What’s so special about ? • The diversity of life relies on carbon!!! • Virtually all chemicals of life are carbon based • (exceptions – e.g., H2O, CO2) – called organic compounds. • It can form four covalent bonds (H, O, N, P, S, C) • C-C bonds enable carbon to form a variety of • geometrical structures (e.g., straight chains, branched • chains, rings) + CH2 + C4 Ethane C2H6 Methane CH4 Benzene C6H6

  9. Molecular Isomers: The same, yet different What’s so special about ? Isomer – an organic compound with the same molecular formula, but different structure C6H12O6 Example: C C C C C Glucose (simple sugar) Fructose (fruit sugar) C C C C Structural isomers Galactose (milk sugar) Metabolized by cells differently due to structure

  10. Molecular Isomers: The same, yet different What’s so special about ? Isomer – an organic compound with the same molecular formula, but different structure Stereoisomers Structural isomers Same atoms, bonded differently Same atoms, Same bonds, Differently arranged in space Geometrical Optical

  11. Molecular Isomers: The same, yet different What’s so special about ? Isomer – an organic compound with the same molecular formula, but different structure Stereoisomers Carvone Same atoms, Same bonds, Differently arranged in space Geometrical Optical

  12. Questions for Homework What is the Thalidomide Dilemma? What side are you on? Please be prepared to discuss these questions next class Read the posted article (Pg. 19)

  13. Functional Groups Just how functional is your group? HW Question - #5, pg.20 • Determine your functional group • Find your family members • On pester paper, draw your molecules and circle the functional group that is in common. • Research your functional group and present your poster to the class with a brief explanation. • What is a functional group? • b) State two characteristics that are important to biological systems.

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