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Warm Up—8/20/13

Warm Up—8/20/13. Write down three classroom expectations. What is the grading percentage breakdown this year?. Warm Up—8/21/13. While prying open a sample container, Rachel cut her hand. It was not bleeding badly so she wiped it with a tissue she had in her pocket. Did she follow

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Warm Up—8/20/13

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  1. Warm Up—8/20/13 • Write down three classroom expectations. • What is the grading percentage breakdown this year?

  2. Warm Up—8/21/13 While prying open a sample container, Rachel cut her hand. It was not bleeding badly so she wiped it with a tissue she had in her pocket. Did she follow correct procedures? Why or why not?

  3. 8/22/13 No Warm Up…. • Take out the lab titled “Acid in your Eye” on the table to the left. • Turn in your lab safety contract!!!! • Wait for further instructions.

  4. Warm Up—8/23/13 • What was the purpose of yesterday’s lab (in your own words)? • Is the reaction that occurred with the Hydrochloric Acid and the Egg reversible?

  5. Warm Up—8/26/13 1. What are the 6 branches of chemistry? 2. What is an element? 3. What is a physical property? Give an example.

  6. Warm Up—8/27/13 • What is a chemical property? Give an example. • Briefly describe how you would determine the difference between salt and sugar.

  7. Warm Up 8/28/13 • What is the purpose of the candle lab? • What is a qualitative observation? Give an example. • What is a quantitative observation? Give an example.

  8. Warm up 8/29/13 • What are the 4 states of matter? • Differentiate between exothermic and endothermic processes. • What happens when something undergoes sublimation?

  9. Warm Up 8/30/13 1. What does viscosity describe? • Which liquid is more viscous: Water, maple syrup, or vegetable oil? • Identify two properties of liquids.

  10. Warm Up--9/3/13 • Differentiate between intensive and extensive properties. • What happens during the phase change evaporation? • Indicate whether the following are intensive or extensive properties: • Density • Length • Physical state of matter

  11. Warm Up—9/4/13 • What do solids and liquids have in common? (refer to venn diagram) • Describe one way that indicates a chemical reaction has occurred? • What is a mixture?

  12. Warm Up—9/5/13 • What was separated in the chromatography process? • What is a compound? • Think of a method to separate a salt water mixture.

  13. Warm Up--9/9/13 • What is a pure substance? List three. • Differentiate between a compound and a mixture.

  14. Warm Up—9/11/13 • Write down everything that you know about the atom. • When you finish #1, clear you desk of everything except for something to write with. (you don’t have to write this down).

  15. Warm Up—9/12/13 • What is the law of conservation of mass? • Differentiate between Dalton’s and Aristotle’s theories of elements/atoms.

  16. Warm Up—9/13/13 • Draw or describe the Thomson model of the atom. • Draw or describe the Rutherford model of the atom. • Who discovered the neutron?

  17. Warm Up—9/16/13 • What is the atomic number for Chlorine (Cl)? • If the mass # for an atom of Na is 21, how many neutrons and protons are in that isotope? • An oxygen ion has a charge of 2- and a mass number of 15. How many protons, neutrons, and electrons does it have?

  18. Warm Up—9/17/13 • What is the atomic mass of oxygen according to the Periodic Table of Elements? • Calculate the atomic mass of Strontium (Sr) which has 2 isotopes: 89Sr has a 76% abundance and 86Sr is the remaining isotope.

  19. Warm Up 9/18/13 • Which isotope, M&mium, Skittlium, or Reesium had the largest mass? What does that imply? • What was the atomic mass of the element candium?

  20. Warm Up 9/19/13 • Describe and name Bohr’s model of the atom. • Louis De Broglie described an electron as having properties of both_____ and a _____.

  21. Warm Up 9/20/13 • What is the frequency of a wave? • What is the speed of light in a vacuum? • Calculate the wavelength of light with a frequency of 1.50 x 1013 Hz.

  22. Warm Up—9/23/13 • What is Planck’s constant (with units)? • Light with a wavelength of 5.25 x 10-12 m has a frequency of what in Hz? Ans: 5.71 x 1019 Hz • Calculate the energy of the light wave in question 2. Ans: 3.78 x 10-14 J.

  23. Warm Up--9/24/13 • The energy for a certain red light equals 2.92 x 10-20 J. What is the wavelength of this light? • (You don’t need to write this one down) Think about topics or questions you want to go over regarding the test.

  24. Warm Up—10/2/13 • What do alpha particles consist of? • What is a beta particle? • What is the charge of gamma radiation?

  25. Warm Up—10/4/13 • Complete the nuclear chemical equation for the alpha decay of 208-Polonium. 2. Complete the equation for the beta emission of 131-Iodine.

  26. Warm Up—10/7/13 • Explain what a half-life is. (hint: think about the lab) • In the lab, what did the pennies represent? • Complete the following nuclear decay reaction: Carbon-14 decays with beta emission.

  27. 10/8/13 FIRST PERIOD: NO WARM UP HAVE MATERIALS READY TO TAKE NOTES.

  28. Warm Up 10/8/13 and 10/10 1. The mass of cobalt-60 is 8.00 grams in a sample. How many grams will remain after 10.5 years if cobalt-60 has a half-life of 5.25 years?

  29. Warm Up—10/15/13 • What is the atomic number of Phosphorus? • What is the atomic mass for Strontium?

  30. Warm Up--10/17/13 • Identify which group each of the following elements belongs to: • Barium • Radon • Iron • Sodium

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