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Warm-Up September 13, 2013 (ODD)

Warm-Up September 13, 2013 (ODD). Draw a picture of an atom, and label the different particles. What is an atom? What is a compound? What does it mean to conserve? What is a proportion? . Agenda September 13, 2013 (ODD). Begin New Unit: The Atom The Story of Chemistry HOMEWORK

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Warm-Up September 13, 2013 (ODD)

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  1. Warm-Up September 13, 2013 (ODD) Draw a picture of an atom, and label the different particles. What is an atom? What is a compound? What does it mean to conserve? What is a proportion?

  2. Agenda September 13, 2013 (ODD) • Begin New Unit: The Atom • The Story of Chemistry • HOMEWORK • Read pages 73 – 78

  3. Warm-Up September 16, 2013 (EVEN) Draw a picture of an atom, and label the different particles. What is an atom? What is a compound? What does it mean to conserve? What is a proportion?

  4. Agenda September 16, 2013 (EVEN) • Begin New Unit: The Atom • The Story of Chemistry • HOMEWORK • Read pages 73 – 78

  5. Warm-Up September 17, 2013 (ODD) What is the difference between a law and theory What does the prefix “sub” mean as in “submerge” or “subscript” or “subordinate” In a cell, where is the DNA found? What word describes amount of space taken up by an object? What word describes amount of “stuff” in an object. Density is the relationship between insert phrase___ over insert phrase____

  6. Agenda September 17, 2013 (ODD) • Go over exam • Finish The Story of Chemistry • The sequel: The Story of the Atom • HOMEWORK

  7. Warm-Up September 18, 2013 (EVEN) What is the difference between a law and theory What does the prefix “sub” mean as in “submerge” or “subscript” or “subordinate” In a cell, where is the DNA found? What word describes amount of space taken up by an object? What word describes amount of “stuff” in an object. Density is the relationship between insert phrase___ over insert phrase____

  8. Agenda September 18, 2013 (EVEN) • Finish The Story of Chemistry • The sequel: The Story of the Atom • HOMEWORK

  9. Agenda September 19, 2013 (ODD) • Lego Activity • The sequel: The Story of the Atom • HOMEWORK

  10. Warm-Up September 20, 2013 (E) Democritus came up with the concept of ________ Robert Boyle came up with the concept of _______ What are three important laws from the story so far? Look up the terms “reactant” and “products.”

  11. Agenda September 20, 2013 (E) • Finish Lego Activity today • Begin the “The Story of Atom”, the sequel to “The Story of Chemistry”

  12. Warm-Up September 23, 2013 (O) What does the prefix “sub” mean? What are the three subatomic particles discussed? What happens when the + side of a magnet is placed next to a - side of a magnet? What happens when the + side is placed next to another + side? Draw a line, a line segment, and a ray If a metal has a density of 2.86 g/cm3, what is the volume of a 0.327g block of that metal?

  13. Agenda September 23, 2013 (O) • Go over homework • Begin the “The Story of Atom”, the sequel to “The Story of Chemistry” • HOMEWORK • 1. Worksheet

  14. Agenda September 23, 2013 (O) • Go over homework • Begin the “The Story of Atom”, the sequel to “The Story of Chemistry” • Discovery of the Electron • Discovery of the Nucleus and the Proton • Discovery of the Neutron • 2. Atomic Number and Atomic Mass • HOMEWORK • 1. Worksheet

  15. Warm-Up September 24, 2013 (E) What does the prefix “sub” mean? What are the three subatomic particles discussed? What happens when the + side of a magnet is placed next to a - side of a magnet? What happens when the + side is placed next to another + side? Draw a line, a line segment, and a ray If a metal has a density of 2.86 g/cm3, what is the volume? The mass is 0.327g Turn homework in box

  16. Agenda September 24, 2013 (E) • Go over homework • Begin the “The Story of Atom”, the sequel to “The Story of Chemistry” • HOMEWORK • 1. Worksheet

  17. Warm-Up September 25, 2013 (O) Most of an atom is _________. Most of the mass of an atom is located _________ What would happen if you shined a flashlight at the object below? What would you throw to make the object rotate? A package of Skittles has a mass of 28.8 grams. One Skittle has a mass of 1.7 grams. How can I find out the number of Skittles for each package?

  18. Agenda September 25, 2013 (O) • Go over homework • Continue the “The Story of Atom”, the sequel to “The Story of Chemistry” • Review Discovery of the Electron • Discovery of the Nucleus and the Proton • Discovery of the Neutron • 3. Atomic Number and Atomic Mass • HOMEWORK • Worksheet • Read and outline 3.2

  19. Warm-Up September 26, 2013 (E) Most of an atom is _________. Most of the mass of an atom is located _________ What would happen if you shined a flashlight at the object below? What would you throw to make the object rotate? A package of Skittles has a mass of 28.8 grams. One Skittle has a mass of 1.7 grams. How can I find out the number of Skittles for each package?

  20. Warm-Up September 27, 2013 (O) What are the three important laws from our first story? You did not create or destroy any Lego blocks in the Lego activity. Which law is related to this? Use a McDonald’s cheeseburger to explain the Law of Definite Proportion If 1 gallon = 3.94 liters, how many liters of gas goes into a car with a 15 gallon tank? If 1 liter costs $1.39, how much to fill up the tank?

  21. Agenda September 27, 2013 (O) • Go over homework • Continue the “The Story of Atom”, the sequel to “The Story of Chemistry” • Discovery of the Nucleus and the Proton • Atomic Number and Mass Number • Calculating number of protons and neutrons • Discovery of Neutron • What are isotopes? • Discovery of isotopes • HOMEWORK • Worksheet

  22. Warm-Up September 30, 2013 (E) What are the three important laws from our first story? You did not create or destroy any Lego blocks in the Lego activity. Which law is related to this? Use a McDonald’s cheeseburger to explain the Law of Definite Proportion If 1 gallon = 3.94 liters, how many liters of gas goes into a car with a 15 gallon tank? If 1 liter costs $1.39, how much to fill up the tank?

  23. Agenda September 30, 2013 (E) • Go over homework • Continue the “The Story of Atom”, the sequel to “The Story of Chemistry” • Discovery of the Nucleus and the Proton • Atomic Number and Mass Number • Calculating number of protons and neutrons • Discovery of Neutron • What are isotopes? • Discovery of isotopes • HOMEWORK • Worksheet

  24. Warm-Up October 1, 2013 (O) Compound A has a mass of 2.77 g and compound B has a mass of 5.54 g. Does this data support the law of multiple proportion? Order the five main characters from the first story from earliest to latest: Boyle, Dalton, Democritus, Lavoisier, and Proust. San Francisco is 384 miles away. A train leaves Los Angeles and travels 88 km in one hour. How long is the train ride if 1 mile = 1.6 km? A train leaves Los Angeles and heads east to Washington D.C. The train travels 75 km in one hour. Hoover Dam is 280 miles away. How many minutes until the train arrives at Hoover Dam? At what time will the train pass Hoover Dam if the train left Los Angeles at 3:30pm?

  25. Agenda October 1, 2013 (O) • Review and finish the “The Story of Atom”, the sequel to “The Story of Chemistry” • Discovery of the Nucleus and the Proton • 2. Atomic Number and Mass Number • Calculating number of protons and neutrons • Discovery of Neutron • What are isotopes? • Discovery of isotopes • HOMEWORK • Worksheet • Section Review 3.2

  26. Warm-Up October 2, 2013 (E) Compound A has a mass of 2.77 g and compound B has a mass of 5.54 g. Does this data support the law of multiple proportion? Order the five main characters from the first story from earliest to latest: Boyle, Dalton, Democritus, Lavoisier, and Proust. A train travels 35 km in 1 hour. How long will it take to 94.5 km? San Francisco is 384 miles away. A train leaves Los Angeles and travels 88 km in one hour. How long is the train ride if 1 mile = 1.6 km? A train leaves Los Angeles and heads east to Washington D.C. The train travels 55 km in one hour. Hoover Dam is 280 miles away. When will the train reach Hoover Dam?

  27. Agenda October 2, 2013 (E) • Review and finish the “The Story of Atom”, the sequel to “The Story of Chemistry” • Discovery of the Nucleus and the Proton • 2. Atomic Number and Mass Number • Calculating number of protons and neutrons • Discovery of Neutron • What are isotopes? • Discovery of isotopes • HOMEWORK • Worksheet • Section Review 3.2

  28. Warm-Up October 4, 2013 (E) Draw and label Thomson’s experimental setup. Milikan is important because he calculated… What two forces was Milikan trying to balance? Rutherford concluded that atoms have a dense and positively charged nucleus. Explain why the nucleus is dense and positively charged. A football field is 100 yards in distance. Usain Bolt runs 200 meters in 19.66 seconds. How many seconds will it take him to run the length of a football field? 1 meter = 1.09 yards

  29. Agenda October 3, 2013 (E) • 1. Atomic Number and Mass Number • Calculating number of protons and neutrons • Discovery of Neutron • What are isotopes? • Discovery of isotopes • 2. Counting Atoms • Mole • Converting grams to mole • Converting grams to mole to number of atoms • HOMEWORK • Make index cards for: • The 3 laws • Democritus, Boyle, Dalton, Proust, Lavoisier • Thomson, Milikan, Rutherford

  30. How is Accuracy different from Precision? Accuracy is how close the data is to the actual recorded number or measurement. Precision is how close the data are to one another. For example, 2.67g, 2,59g, 2.60g, and 2.64g are precise but not accurate because it is not close to the actual mass of 3.45.

  31. Differentiate between Law and Theory Both theory and a law are part of the scientific method, but a theory describes WHY something happens; why something is the way it is, why it works in a certain way. A law describes WHAT/HOW something happens. For example, “ice always floats on water” is a law because it states WHAT. If you say “ice floats on water because it’s density is less than the density of water,” then you are stating a theory because you are describing why something happens.

  32. Differentiate between Pure Substance and Homogeneous Mixture A pure substance can either be a compound or an element. An element is made up of one type of atom. A compound is made up of two or more different types of atoms that are chemically joined. A homogeneous mixture is physically mixed. It is a mixture that is evenly distributed. An example of a pure substance can be gold or water. An example of a homogeneous mixture can be like a chocolate bar or food coloring in water.

  33. Differentiate between Mass and Weight Mass is the amount of “stuff” in something and weight is the amount of gravitational pull exerted by the thing. If you were to go on the moon, your weight would change but your mass would not.

  34. Accuracy vs. Precision The measured masses are examples of precision because when compared to the mass of 3.45, none of them are accurate or close to the number. They are a cluster of numbers that aren’t near the actual number. An accurate answer would be 3.44 g, 3.46 g, and 3.43 g.

  35. 1. The Story of Chemistry How we know what we know about the Atom OBJECTIVE: Understand the development of how the idea of an “atom” came about

  36. 1. The Story of ChemistryA. Greek Beginnings

  37. 1. The Story of Chemistry

  38. 1. The Story of Chemistry In order to understand WHY we know and HOW we know this is what an atom looks like, we need to learn about the story of the atom.

  39. 1. The Story of Chemistry Early human civilizations organized “stuff” into four categories: Earth, Air, Fire, Water

  40. 1. The Story of Chemistry

  41. 1. The Story of Chemistry The first known writing that has the word “ATOM” is from Greece. It was written around 400 B.C. by a philosopher named Democritus, Δημόκριτος

  42. 1. The Story of Chemistry Democritus’ idea was… Everything that exists is made up of this “thing” that cannot be broken, separated, or divided into something smaller.

  43. 1. The Story of Chemistry Democritus’ idea was… Everything that exists is made up of this “thing” that cannot be broken, separated, or divided into something smaller. He called that “thing” an ATOM.

  44. 1. The Story of Chemistry ATOM = a Greek word

  45. 1. The Story of Chemistry ATOM = a Greek word Temnein = to cut or divide A = prefix meaning not

  46. 1. The Story of Chemistry ATOM = a Greek word Temnein = to cut or divide A = prefix meaning not a + temnein =

  47. 1. The Story of Chemistry ATOM = a Greek word Temnein = to cut or divide A = prefix meaning not a + temnein = unable to cut

  48. 1. The Story of Chemistry Democritus’ idea was… Everything that exists is made up of this “thing” that cannot be broken, separated, or divided into something smaller. He called that “thing” an ATOM.

  49. 1. The Story of Chemistry Democritus’ idea of the atom is… An observation? A hypothesis? An experiment? A law? A theory?

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