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Brain Teaser

Brain Teaser. Read the short article on Blood Answer the following: What are the advantages and disadvantages of artificial blood being made? Is research going to be a factor in your life for the future?. What’s the Matter with Matter?. Thinking about Matter.

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Brain Teaser

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  1. Brain Teaser • Read the short article on Blood • Answer the following: • What are the advantages and disadvantages of artificial blood being made? • Is research going to be a factor in your life for the future?

  2. What’s the Matter with Matter?

  3. Thinking about Matter • Sort the following into two categories, matter and not matter. • Peanut butter, water, fish, garbage, time, motion, the human brain, carbon dioxide gas, yourself, an idea, tree, energy. • How did you distinguish between the categories?

  4. What is Matter? • Matter is anything that has mass and volume

  5. What forms does matter come in? • Solid • Liquid • Gas • Plasma

  6. States of Matter • Solid • has definite shape and definite volume. • Solid animation - Ice

  7. States of Matter • Liquid • has undefined shape but defined volume • Liquid Animation - Water

  8. States of Matter • Gas • has undefined shape and undefined volume. • Gas Animation - Steam

  9. States Of Matter • Plasma • very hot gasses • undefined shape and volume • only exist at high temperatures (i.e. the sun)

  10. Physical Properties • Characteristics of a substance that can be observed without altering the identity of the substance. • State, density, color, odor, melting point, boiling point, luster, conductivity, brittleness, malleability.

  11. Chemical Properties • Characteristics of a substance that cannot be observed without altering the identity of the substance. • Reactivity, flammability, reaction types

  12. Closure • Draw pictures that represents a solid, a liquid, and a gas. • Explain each drawing.

  13. Physical and Chemical Changes • Physical Changes • Do not alter the identity of a substance • Crushing, tearing, changes of state (solid to liquid to gas) • Chemical Changes • Alter the identity or chemistry of a substance • Burning, cooking, rusting

  14. Physical and Chemical Properties • Consider a copper coin. Make a list of its chemical and physical properties. Consider these photos for clues.

  15. Practice • Physical vs. Chemical

  16. Brain Teaser • List the properties that identify whether a matter goes through physical or chemical change. • Observe the Demo: What is happening? Is this a chemical or physical change? Why?

  17. Physical and Chemical Changes • Is this a physical or a chemical change? • Explain your reasoning.

  18. Lab- Physical vs. Chemical Change • Station Rotation • How do you know a chemical change has occurred? • What are the indicators?

  19. Classification of Matter Laboratory • Station Rotation • Write down the Chemical Formula • Name of substance • Describe the appearance of the substance. Be very specific!!

  20. Classification of Matter Laboratory • Developing the classification scheme • Look for patterns • In formulas, names, appearance • Be able to use your classification scheme to describe all of the substances you looked at. • Remember to start broad and get more specific as you go through the chart.

  21. Classification of Matter

  22. Classification of Matter

  23. Pure Substance Elements • Matter that can not be broken down into simpler substances under normal lab conditions • Contains only one kind of atom Atom Molecule • Elements (symbols) Na, Au, C • Where can you find a list of all the elements?

  24. + + Pure Substance Compounds • Can be separated into elements • Composed of two or more elements that combine in a chemical reaction • Combine in a fixed proportion • Examples – NaCl, H2O, Fe(NO3)3

  25. Which are elements and which are compounds?

  26. Mixtures • A blend of two or more pure substances • Not chemically combined Granite

  27. MixturesHeterogeneous • Mixture with visibly different parts. • Sand + water • Salt + Pepper • M & M’s

  28. MixturesHomogeneous • Mixture with no visibly different parts. • Sea water H2O + NaCl • Air N2 + O2 + CO2

  29. Practice Classifying Matter • Make a list of 3 things (and their parts) found in the classroom. Classify these as • solid, liquid, or gas • pure substances and mixtures • homogeneous or heterogeneous • elements or compounds • Be prepared to share your classifications?

  30. Classify • mixtures • pure substances • elements • compounds Draw a picture that represents a pure compound.

  31. Classify Classify each of the following as, a homogenous or heterogeneous mixture, pure substance, element or compound, atom or molecule. • CH4 • KMnO4 • Co • Al + H2O Draw atomic level pictures of each substance.

  32. Classification of Matter Lab Quiz

  33. Closure • Draw an atomic level picture of a mixture of compounds.

  34. Agenda August 10th, 2005 • Warm-up • Review Homework- Grade Quiz • Chemistry Lab Book Format • Lab - “Reaction of Solutions” • Post Lab discussion • Lab write-up • Intro to atomic representations • Homework: Atoms, Molecules, etc…

  35. WARM-UP • Briefly describe each of the following separation techniques. Identify the only techniques that can separate a compound into its elements. • Filtration • Crystallization (evaporation) • Chromatography • Electrolysis • Distillation

  36. GradeMATTER POST LAB QUIZ

  37. Introduction to “Reaction of Ions in Solutions” Lab • PURPOSE • Why am I doing this lab? • Must connect to the title “The purpose of this lab is to …”

  38. Introduction to “Reaction of Ions in Solutions” Lab • BACKGROUND INFORMATION • The “stuff” you need to know before conducting the lab. • Terms, Cautions, Chemicals, Concepts, ect. • Paragraph form

  39. Introduction to “Reaction of Ions in Solutions” Lab BACKGROUND INFORMATION • D.W. Distilled Water • Ions – Charged particles • Precipitate- solid forms • Pb(NO3)2 – Lead Nitrate • KI – Potassium Iodide • NaCl – Sodium Chloride • Na2SO4 – Sodium Sulfate

  40. Introduction to “Reaction of Ions in Solutions” Lab MATERIALS AND APPARATUS • List all the materials and equipment to be used and draw the apparatus set up. Petri Dish Flask with D.W. Pipettes Pb(NO3) 2 KI NaCl Na2SO4

  41. Introduction to “Reaction of Ions in Solutions” Lab Procedure • Add enough distilled water to cover the bottom of the petri dish • Add 20 drops of each solution • Make observations

  42. Introduction to “Reaction of Ions in Solutions” Lab DATA • All qualitative and quantitative data collected. Reaction of Ions in Solution

  43. Post Lab Discussion: “Reaction of Ions in Solutions” Lab DATA ANALYSIS OR RESULTS • Paragraph form • Explain the data collected • Analyze your results Lead Nitrate is mixed with potassium Iodide and a yellow precipitate forms. Final sentences discuss why you learned about the reactivity of certain substances

  44. Post Lab Discussion: “Reaction of Ions in Solutions” Lab CHEMICAL EQUATIONS • Pb(NO3)2+ KI  PbI2 (s)+ K + NO3 • Pb(NO3)2+ Na2SO4 PbSO4 (s)+ Na +NO3 • Pb(NO3)2+ NaCl  PbCl2(s)+ Na + NO3

  45. Post Lab Discussion: “Reaction of Ions in Solutions” Lab CONCLUSION What does it all mean?! • Overall Summary of the Lab • WHY DID YOU GET THESE RESULTS?

  46. NEW TERMS • Ion • Petri Dish • Medicine dropper/Pipette • Beaker • Flask (Erlemnmeyer) • Diffusion • Precipitate (ppt) • Distilled Water • Soluble • Insoluble

  47. NO3 SO4 Pb(NO3)2 KI PbI2 NaCl Na2SO4 PbSO4 PbCl2 Potassium Iodide Lead Sulfate Sulfate Sodium Sulfate Lead Chloride Nitrate Lead Nitrate Sodium Chloride Lead Iodide CLOSUREMatch the following:

  48. Warm-Up • Determine: # of atoms, # of molecules, Compound, elements, if it is a mixture or a pure compound and the formula for the following: = A = B = C • Draw the atomic structure for three molecules of one element.

  49. Lab Quiz • When Finished Pick up • Atoms, Molecules, Elements, compounds

  50. Rally Table • You and ONE (1) partner • Alternate problems • Use different color ink

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