Chem 11

If you are gone from Chem 11 on Tuesday May 9th for track we will work on our Unit 5 Review as well as doing the following:  

For each Family listed below, pick 3 elements from the family and 1) write their electron configurations, 2) Describe the appearance of the element 3) List the most important uses  4) What is it's natural abundance and how 5) watch the video for each element and give me some new/interesting facts you learned.   Use MY FAVORITE WEBSITE to do this.  Found HERE  6) Explain what common properties these elements all have.  

Families:  Alkai Metals, Alkaline Earth Metals, Transition Metals,  Halogens, Noble Gases,  Lanthanides. 

Biology 12

Today we finished off the circulatory system with Power point notes on Capillary Exchange, Lymphatic System, Fetal Circulation and Circulatory diseases.

Due next class:  Module Questions C:  #1-3 and 5-6
Module Questions G:  #1-5

 Use the lymphatic system from your text (pg. 235) to help you here. 

Chemistry 11

We went over a few questions from the Lewis Dot Diagram worksheet.

Next we looked at the difference between valence electrons and an atom's valence.

Unit 5 Review is due on Wednesday.  We will work on it tomorrow. 

Chemistry 11

BIG UNIT 5 Review Assignment.  Answers to selected questions.

1.  Definitions:  You are on your own!  Make sure you know the difference between polar and non-polar covalent bonds as we didn't go over these in detail.

3.  In any energy level:  electrons are added in the following order:  s, p, d and f.

4a)  Protons=86      electrons=86       neutrons=136

4c)  Protons=92       electrons=92      neutrons=142

4e)  Protons=27        electrons=24      neutrons=631

5a) [Ar]4s²3d¹⁰

5c) [Xe]6s²4f¹⁴5d¹⁰6p²

5 h)  Mn⁺²= start with Mn=25 electrons.  [Ar]4s²3d⁵        Take off 2 electrons.   So  it becomes [Ar]3d⁵   (electrons are removed from energy level 4 first).

7)  Masses are the periodic table are not whole numbers since the mass represents the average atomic mass of ALL the isotopes of that element.

8a)  Across a period on the table, atomic radius decreases since electrons are being added to the same energy level.   Protons are also added as you go across a period.  The attraction between protons and electrons increases as you go across a period, so the atoms "shrink" in towards the center.

9b) Down a group on the periodic table, ionization energy decreases since energy levels are being added with each new group.   Electrons are getting further from the nucleus and therefore getting easier to remove.

10)  We will discuss this one in class.

11a)  Rb has a larger radius than I since electrons are added to the same energy level as you move across.   It has more electrons and more protons pulling them in.

12a) Ne has greater ionization energy than Ar.  Ne has outer electrons which have a greater pull towards the nucleus.

13a) C= greater electronegativity.  Pull of its electrons is greater since it has less energy levels than Si.

14a)  P is more reactive than As.  P has greater attraction for electrons therefore can pull off electrons more easily from another element.

15) valence electrons are the most important in bond forming.

16)  We will go over some of these.

17a) non-polar covalent bond       17c) ionic bond          17e) covalent bond (non polar)

Biology 12

Today we did the fetal pig dissection of the circulatory system and the heart.

Next we completed notes on systemic and pulmonary circuit and blood pressure.

We watched a movie about poor John having a heart attack!  Found here:  https://www.youtube.com/watch?v=m_-7e81rVd8&t=1423s

For homework:  Complete Module questions:  C (#1-3)

Chemistry 11

Today we learned how to write Lewis Dot Diagrams for atoms, ionic and covalent compounds.   Lewis Dot Diagrams Worksheet for homework. 

If you need more practice:  Do pg. 188  practice problems in Hebden

Biology 12

We took lots of notes on the heart and the blood vessels.

Module Questions:  A (#1-6)  and B (#1-6)