Chemistry 1, 2022-23

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Room: HUM3015
Time: Sunday 11:10AM - 11:55AM
Grades: 7-9
Prerequisites:
Material fee: $5.00

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Description: This class will cover the initial chemistry concepts, atom structure, chemical bonds and their formation, the periodic table, chemical reactions, and the main classes of inorganic chemical compounds. The class will not discuss reaction rates, thermodynamics, electrochemistry, and organic chemistry.

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Homeworks

These homeworks are copyrighted material, posted here for use by SchoolNova students and parents. Everyone else is welcome to print a copy of these materials for their personal use; any redistribution or commercial use is prohibited

• Assigned on 09/18: Homework: Chemistry introduction  |  
  
• Assigned on 10/2: Classwork: Atomic structure and atomic mass  |  Homework: Atomic structure and atomic mass  |  
  
• Assigned on 10/16: Classwork: Electron configuration-1  |  Homework: Electron configuration  |  
  
• Assigned on 10/23: Classwork: electron configuration-donors acceptors  |  Homework: electron configuration-donors acceptors  |  
  
• Assigned on 10/30: Classwork: bonds-1  |  Homework: bonds-1  |  
  
• Assigned on 11/6: Classwork: chemical bond 2  |  Homework: chemical bond 2  |  
  
• Assigned on 11/13: Classwork: Bonding-3  |  Homework: Bonding-3  |  
  
• Assigned on 11/20:
  
• Assigned on 12/4: Classwork: oxidations state  |  Homework: oxidation state  |  
  
• Assigned on 12/11: Classwork: Periodic Table  |  Homework: Periodic Table  |  
  
• Assigned on 12/18:
  
• Assigned on 01/8: Classwork: periodic table  |  Homework: periodic table  |  
  
• Assigned on 01/15:
  
• Assigned on 01/29: Classwork: Mole  |  Homework: mole  |  
  
• Assigned on 02/12: Classwork: Redox reactions  |  Homework: Redox reactions  |  
  
• Assigned on 02/26:
  
• Assigned on 03/5: Classwork: oxygen  |  Homework: oxygen  |  
  
• Assigned on 03/12: Classwork: Oxygen  |  
  
• Assigned on 03/19: Classwork: hydrogen  |  Homework: hydrogen  |  
  
• Assigned on 03/26: Classwork: hydrogen  |  Homework: hydrogen  |  
  
• Assigned on 04/2: Classwork: Hydrogen-water  |  
  
• Assigned on 04/16: Homework: molar mass, calculations using chemical reactions  |  
  
• Assigned on 04/23: Classwork: solution concentrations  |  Homework: solution concentrations  |  
  I am sorry, I posted the wrong file for the homework. Pleas see the text below: Molar concentration is the ratio of amount of solute in moles to the volume in liters. The mass fraction is the ratio of the mass of a solute to the mass of the solution (mass percent is the mass fraction multiplied by 100). 1. How many grams of NaCl will form if water evaporated from 50 g of its 10% solution? 2. The density of 50% solution of NaOH is 1.53 g/ml. What is the volume of 100g of this solution? 3. The alcohol solution of iodine used for disinfection is a 5% solution of iodine in ethanol. How many grams of crystalline iodine and grams of ethanol will be necessary to prepare 10g of this solution? 4. What is the mass of NaBr taken in the amount of 0.5 mole? 5. How many grams of KNO3 is necessary to prepare 1L of its 0.5 mole/L (0.5M) solution?
  
• Assigned on 04/30: Classwork: classes of chemical compounds-1  |  Homework: Classes of chemical compounds-1  |  
  
• Assigned on 05/7: Classwork: classes of chemical compounds-2  |  Homework: Classes of chemical compounds-2  |  
  
• Assigned on 05/14: