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Websites:  Explore at your leisure.

http://www.USATestPrep.com   Log on:  chattahoochee  Password:  newton52 

                   (has practice for the Georgia High School Graduation Test.)          

www.sciencegeek.net   Good power point presentations and review activities for chemistry.

HOMEWORK--See board daily.  Scroll Down for answers to the review sheets.

Week of September 15

Monday, Sept 15  No homework

Tuesday, Sept. 16--Look up 5 elements which have at least 3 isotopes each, and write the symbol for each isotope, showing the atomic number and mass number of each.

Wednesday, Sept 17--Read Beanium Lab.

Thursday, Sept 18--Finish lab questions

Friday, Sept 19--Begin studying for next Tuesday's test over chapters 3 and 4 of textbook.  Study all notes and worksheets.  Work on review sheet. 

Week of Sept 22

Monday, Sept 22--Study for tomorrow's test.

Answers to Chapter 3 Review  pp. 94-97 of textbook.

32.  Carbon dioxide has a constant composition.  It is a pure substance.

34.  a.  intensive    b.  extensive     c.  intensive     d.  extensive

35.  false--phase changes can occur or even chemical reactions can occur.

38.  a, b, d, f  physical     c, e chemical

40.  100o C ,  100o C       B. P.  is an intensive property

41.  sucrose, because it decomposes before it melts

44.  Chemical -- bananas taste sweeter and are softer as they ripen.  New properties

45.  Physical  -- no new substances

46.  Change in color, odor or temperature, and/or the production of a gas or a solid when mixed.

47.  Iron and oxygen are the reactants.   Iron oxide is the product.

48.  If you collected all the gases (carbon dioxide and water vapor) you would see that mass is conserved.

50.  34.0 grams          53.   68.0 grams          54.  159 grams          55.  264 grams

57.  Distillation

59.  False    Mixtures are physical blends of substances, not a chemical bonding of substances.

60.  a.  same       b.  different      c.  different      d.  same

66.  a.  A compound is a combination of two or more elements.

       b.  When a small amount of sugar is completely dissolved in water, a homogeneous solution is formed.

67.  a.  sodium and chlorine           b. nitrogen and hydrogen

       c.  carbon, hydrogen, and oxygen       d.  bromine

69.  Yes.  Elements can not be broken down into any simpler substances.  Compounds can be decomposed into the elements which make them up.

70.  The properties of the elements which make up a compound are different from the properties of the compound.

71.  the law of definite proportions

74.  3 %      

77.  The ratio is 2:1

Answers to the Review  Unit 2 Part 1  Chapters 3 and 4 worksheet.

II.  Modern Atomic Theory

a>  Law of Definite Proportions      b>  Law of Conservation of Mass

c>  Law of Multiple Proportions

IV.  Atom or Ion               Atomic                  Average                Mass                            #p+                       #n                       #e-

                                            Number             atomic  mass              number                                     

42

20 Ca

 

20     

 LOOK ON
PERIODIC TABLE

          ↓

 

42

 

20     

 

22

 

20

85

37Rb+1

 

37 

 

          ↓

 

85

 

37 

 

48

 

36

52

24Cr+3

 

24

 

          ↓

 

52

 

24

 

28

 

21

32

15P-3

 

15

 

          ↓ 

 

32

 

15

 

17

 

18

195

 78 Pt

 

78

 

 

195

 

78

 

117

 

78

VIII. 

1. a> chemical     b> physical     c> physical     d> chemical     e> physical     f> chemical

2.  a>  liquid and gas     b>  gas     c>  solid     d>  solid and liquid

3.  a>  physical     b>  chemical     c>  physical

4.  33.38 grams

5.  4.48 % hydrogen,  60.00 % carbon,  35.52 % oxygen

6.  No   Ratio of H:H is 2:1

7.  A.  15.99931 amu      Oxygen

     B.  1.007976 amu

     C.  1.007976 amu

     D.  63.546 amu    copper

8.  a. 1      b. 3      c. 4      d. 1      e. 3      f. 4      g. 1      h. 1      i. 4      j. 2      k. 4      l. 3

  

 

 

 

 

 

 

 

 

 

 

 

 

Monday, August 11--Read the Safety Contract and the syllabus.  Please sign each and have your parents/guardians sign each.  Bring them to class tomorrow.  Bring your notebook and all handouts to class tomorrow and every day.

Tuesday, August 12--Reasons for the rules Worksheet.  Bring your notebook and all handouts to class tomorrow and every day.Study for tomorrow's safety and syllabus quizzes.

Wednesday, August 13--Bring your notebook and all handouts to class tomorrow and every day.  Read over and review the notes sheet (outline) given to you today in class.

Thursday, August 14--none

Friday, August 15   Look over dimensional analysis problems to see if you have questions.

Monday, August 18--Read 'Lab Check-In and Familiarization' and try the Practice Problems Packet, page 1   (reading the instruments)

Tuesday, August 19--Complete the 'Practice Problems Using Dimensional Analysis' sheet.

Week of August 25-29

Monday-Complete the lab and the density problems in the Practice Problems Packet.

Tuesday-Look through the Review packet to see if there you have any questions about the material.  See the Review Sheet below this blue box.

Wednesday-Study all your notes and handouts for tomorrow's test.

Thursday-Read the Performance Assessment handout.

Friday-Enjoy the long weekend.

Week of Sept 2  --  work on Lab Report

Week of Sept 8

Monday--Work on Lab Questions

Tuesday--Do the 'Visualizing the Conservation of Mass' and 'Types of Matter' pages from today's handout.

Wednesday--1.  Check out your textbook online, and browse through chapter 4.

                      2.  Complete the Chapter 3 Assessment pages from the packet (Study Guide) given to you last Thursday.

Thursday-- Complete page 67 from Monday's packet

Friday--Complete the assigned pages. These are due next Wednesday.   Make sure you bring your book to class on Monday, Sept 15.