• Week of 5/6/19

    Chapter 13:  Okay, students, this is it---the LAST chapter!

    A-Classes (Periods 1,3,5) There will be an OPEN BOOK/OPEN NOTES test on Chapter 13 on Thursday, May 9, 2019

    B-Classes (Periods 2.4.6) There will be an OPEN BOOK/OPEN NOTES test on Chapter 13 on Wednesday, May 9, 2019

     

    ---->If you miss the Chapter 13 test, you can make it up, but it is YOUR responsibility to see me about it!!!

    If you've missed any classes, make sure you read Chapter 13 and understand all the following Gas Laws:

     

    Boyles Law:  P1V1=P2V2

     

    Charles Law:  V1/T1=V2/T2

     

    Gay-Lussacs Law:  P1/T1=P2/T2

     

    Combined Gas Law: P1V1/T1=P2V2/T2

     

    Ideal Gas Law:  PV=nRT ----> n is the # of moles of gas, and R is a Universal Gas Constant. 

      ♦ (you can look on Page 454 of your text to see a table of these constants, but do not worry about memorizing them.)

    Here is a worksheet to help you practice these problems   GAS LAWS WORKSHEET

    And here is a video to watch will help you figure out which law to use when solving a Gas Law Problem: GAS LAW YOUTUBE VIDEO

     

    **Also, do not forget that Standard Temperature and Pressure of an Ideal Gas is:  0 degrees Celsius and 1 atm.  

    **All Gas Law Problems must be in Kelvin (to convert Celsius to Kelvin, add 273.)

     

    Finally, Please understand Reaction Rates:  These are the factors that make reactions go faster:

    Activation Energy

    Catalysts

    Surface Area

    Particle Size

    Concentration

      

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    4/30-Chapter 12:

    We are finishing Chapter 12 this week; there will be a short quiz, and a fairly easy (I think so, anyways!) TEST.

    If you want to review, or have missed classes, please read chapter 12 in your text book and make sure you know: 

    -The Three States of Matter

    -The formula for Kinetic Energy (K.E. = 1/2 * mass * velocity, squared)

    -Dalton's Law of Partial Pressures

    -The six phase changes; their names and what they mean

    *Melting, *Freezing, *Condensation, *Vaporization, *Sublimation, *Deposition

    PHASE DIAGRAMS:  Please refer to Page p. 429 in your textbook and be able to understand the diagram there, especially "Triple Point."

    Here is a worksheet you can turn in:  Chapter 12 WORKSHEET

     

    4/10/2019 -Chapter 11

    STOICHIOMETRY!

    I know this sounds scary, but actually Stoichiometry is very easy once you understand how it all works.  If you've missed my first two lectures, please read this worksheet, which will explain things nicely:

    *****BEFORE YOU DO THE S'MORES LAB, WATCH THIS VIDEO:  Sandwich Stoichiometry

    STOICHIOMETRY EXPLAINED

    Stoichiometry is nothing more than ratios of the reactants and products in a balanced chemical equation. 

    There are 3 types of Stoichiometry problems:

    *Mole-to-Mole

    *Mole-to-Mass

    *Mass-to-Mass

    Remember that you are always converting everything to moles, regardless of the type of problem you're doing.  

    Here is a worksheet to get your started on the Mole-to-Mole type of problem (note, answers are printed here too, so you can check your work.)

    5 Mole-to-Mole Problems

    Here is a more challenging worksheet:

    13 Mole-Mole Problems

    and finally, here is a Mole to Mass worksheet:

    Mass-Mole Problems

     

    3/25/19  WELCOME BACK STUDENTS!

    4th Quarter is upon is and we have a lot of work to do; it's going to be fun and interesting; I promise!

    A roadmap for the rest of the year:

    We have three chapters to cover:  Chapter 10, 11 and 12 (and maybe some of Chapter 13 as well.)

    For the next 2 weeks, we are going to be studying Chapter 10:  The MOLE.

    General Chemistry Students:  Let's start with a review of percent composition: 

    Here is the worksheet we started in class: Percentage Composition Worksheet 

    Here is a video to help you understand how to complete this worksheet How to do Percent Composition

    CONVERSIONS

    Grams to Moles and vice versa--

    Here is are two videos to help you understand this:  Grams to Moles and Atoms to Moles


    And here is a worksheet to practice: Practice Worksheet (note:  This has a variety of problems on it, including two isotope problems from Chapter 3; #1,#2; see if you can do them!)

    MOLE LAB

    General Chemistry Students:  General Chem Mole Lab

    Honors Chemistry Students:  Honors Chem Mole Lab

    B Day Students;  Lab will be on Friday, March 29, 2019

    A Day students Students on Monday, April 1, 2019

    **Make sure you see me if you miss the Mole Lab!

     

     

     

     

    Chapter 9 Test:

    PERIODS 1,3,5:  Tuesday, March 12 (Chem. Reactions Lab Due today also)

    PERIODS 2.4.6:  Wednesday, March 13 (Chem Reactions Lab Due today also)

    STUDY GUIDE FOR CHAPTER 9 TEST:

    General Chem:  GC Study Guide

    PERIOD ONE ONLY!  Watch this video for the Virtual Lab: 

    https://www.youtube.com/watch?v=nsEkKIiOz7Q

     

    Honors Chem: HC Study Guide

    REACTIONS LAB:

    Alternative assignment:  

    Watch the following videos: Single Replacment Rxn

    Double Displacement Rxn

    And fill out Alternative Lab Sheet (I will give you this.)  Thank you!

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    2/28/19 Chapter 9 Chemical Reactions

    Synthesis Reactions or A + B -->AB

    Please watch this video which will help you understand how to recognize and write a Synthesis Reaction: Synthesis Reactions

    Decomposition Reactions or AB--> A + B

    Please watch this video which will help you understand how to recognize and write a Decomposition Reactions: Decomposition Reactions

    Single Replacement Reactions (also called Single Displacement Reactions) or A + BX --> AX + B

    lease watch this video which will help you understand how to recognize and write a Single Replacement Reaction:  Single Displacement Reactions

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    2/25/19 Chapter 9 Chemical Reactions

    Balancing Equations:  Chapter 9.1

    Watch This Video:  Introduction to Balancing Equations

    And you can practice with these worksheets:

    Balancing Equations Worksheet

    More Balancing Equations

    Even MORE equations to balance!

    5 Different kinds of chemical reactions

    Watch this video: Types of Chemical Reactions

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    2/8/19 Intermolecular Forces

    Read This for Intermolecular Forces

     

    Chapter 8:  Naming Acids:

    Watch this video for the rules in naming acids:  https://www.youtube.com/watch?v=5Jb2u9ihfm4

    Here is the worksheet for practicing these problems:

    Naming Acids Worksheet

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    Chapter 8: Covalent bonds

    Here is the video we watched this week on naming Covalent Bonds:

    Naming Covalent Bonds

    A-classes:  Vocab Quiz Thursday Ch. 8

    B-classes:  Vocab Quiz Thursay Ch. 8

    Make sure you know your Greek pre-fixes!

    1-mono
    2-di
    3-tri
    4-tetra
    5-penta
    6-hexa
    7-hepta
    8-octa
    9-nona
    10-deca

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    Chapter 7:  Ions, Ionic Bonding and Ionic Compounds

    -How they are formed

    -Naming compounds

    -Writing chemical forumula

    -Physical properties of ionic compounds

    ***If you've missed any classes, please read Sections 7.1, 7.2, & 7.3, and complete all the practice questions for each section.

    You can also watch the following videos:

    Intro to Ionic Bonding

    Ionic Bonding Part 2

    Ionic Bonding Part 3