Download - Warm Up—8/20/13
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Warm Up—8/20/13
1. Write down three classroom expectations.
2. What is the grading percentage breakdown this year?
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Warm Up—8/21/13
While prying open a samplecontainer, Rachel cut her hand. It was not bleeding badly so shewiped it with a tissue she had inher pocket. Did she followcorrect procedures? Why or why not?
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8/22/13
No Warm Up….1. Take out the lab titled “Acid in your Eye” on
the table to the left.2. Turn in your lab safety contract!!!!3. Wait for further instructions.
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Warm Up—8/23/13
1. What was the purpose of yesterday’s lab (in your own words)?
2. Is the reaction that occurred with the Hydrochloric Acid and the Egg reversible?
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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.
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Warm Up—8/27/13
1. What is a chemical property? Give an example.
2. Briefly describe how you would determine the difference between salt and sugar.
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Warm Up 8/28/13
1. What is the purpose of the candle lab?2. What is a qualitative observation? Give
an example.3. What is a quantitative observation? Give
an example.
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Warm up 8/29/13
1. What are the 4 states of matter?2. Differentiate between exothermic and
endothermic processes.3. What happens when something
undergoes sublimation?
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Warm Up 8/30/13
1. What does viscosity describe?2. Which liquid is more viscous: Water,
maple syrup, or vegetable oil?3. Identify two properties of liquids.
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Warm Up--9/3/13
1. Differentiate between intensive and extensive properties.
2. What happens during the phase change evaporation?
3. Indicate whether the following are intensive or extensive properties:
1. Density2. Length3. Physical state of matter
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Warm Up—9/4/13
1. What do solids and liquids have in common? (refer to venn diagram)
2. Describe one way that indicates a chemical reaction has occurred?
3. What is a mixture?
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Warm Up—9/5/13
1. What was separated in the chromatography process?
2. What is a compound?3. Think of a method to separate a salt
water mixture.
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Warm Up--9/9/13
1. What is a pure substance? List three.2. Differentiate between a compound and a
mixture.
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Warm Up—9/11/13
1. Write down everything that you know about the atom.
2. When you finish #1, clear you desk of everything except for something to write with. (you don’t have to write this down).
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Warm Up—9/12/13
1. What is the law of conservation of mass?
2. Differentiate between Dalton’s and Aristotle’s theories of elements/atoms.
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Warm Up—9/13/13
1. Draw or describe the Thomson model of the atom.
2. Draw or describe the Rutherford model of the atom.
3. Who discovered the neutron?
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Warm Up—9/16/13
1. What is the atomic number for Chlorine (Cl)?
2. If the mass # for an atom of Na is 21, how many neutrons and protons are in that isotope?
3. An oxygen ion has a charge of 2- and a mass number of 15. How many protons, neutrons, and electrons does it have?
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Warm Up—9/17/13
1. What is the atomic mass of oxygen according to the Periodic Table of Elements?
2. Calculate the atomic mass of Strontium (Sr) which has 2 isotopes: 89Sr has a 76% abundance and 86Sr is the remaining isotope.
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Warm Up 9/18/13
1. Which isotope, M&mium, Skittlium, or Reesium had the largest mass? What does that imply?
2. What was the atomic mass of the element candium?
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Warm Up 9/19/13
1. Describe and name Bohr’s model of the atom.
2. Louis De Broglie described an electron as having properties of both_____ and a _____.
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Warm Up 9/20/13
1. What is the frequency of a wave?2. What is the speed of light in a vacuum?3. Calculate the wavelength of light with a
frequency of 1.50 x 1013 Hz.
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Warm Up—9/23/13
1. What is Planck’s constant (with units)?
2. Light with a wavelength of 5.25 x 10-
12 m has a frequency of what in Hz? Ans: 5.71 x 1019 Hz
3. Calculate the energy of the light wave in question 2. Ans: 3.78 x 10-14 J.
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Warm Up--9/24/13
1. The energy for a certain red light equals 2.92 x 10-20 J. What is the wavelength of this light?
2. (You don’t need to write this one down) Think about topics or questions you want to go over regarding the test.
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Warm Up—10/2/13
1. What do alpha particles consist of?
2. What is a beta particle?3. What is the charge of gamma
radiation?
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Warm Up—10/4/13
1. Complete the nuclear chemical equation for the alpha decay of 208-Polonium.
2. Complete the equation for the beta emission of 131-Iodine.
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Warm Up—10/7/13
1. Explain what a half-life is. (hint: think about the lab)
2. In the lab, what did the pennies represent?
3. Complete the following nuclear decay reaction: Carbon-14 decays with beta emission.
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10/8/13
FIRST PERIOD: NO WARM UPHAVE MATERIALS READY TO TAKE NOTES.
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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?
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Warm Up—10/15/13
1. What is the atomic number of Phosphorus?
2. What is the atomic mass for Strontium?
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Warm Up--10/17/13
1. Identify which group each of the following elements belongs to:
a) Bariumb) Radonc) Irond) Sodium