# Ms. S. Casey

Welcome To Our Page

Posted: March 17, 2011

## Environmental Science 123

Posted: March 16, 2011

## Environmental Science 123

Websites   http://www.census.gov/ipc/www/idb/ http://hdrstats.undp.org/ https://www.cia.gov/library/publications/the-world-factbook/geos/xx.html   Helpful Instructions: Question 1a) -go to the first website -Click on data access -select a country -select 1950 -click submit   Question 1-bcd) -return to main page -look at the demographic indicators: Midyear populations   Question 3 -Look up  “growth rate” on the internet, may be more accurate if you use Population growth rate   Question 6 -click on populations pyramids in the tabs above the information, if nothing comes up for your country show me.   Question 7 -type in http://www.census.gov/cgi-bin/ipc/pcwe   Question 8 Go to the website: http://hdrstats.undp.org/ -click on country to find your country -look up your country: and look up the HDI value for your country and look across to the GDP per capita   Question 9 Go to the website: https://www.cia.gov/library/publications/the-world-factbook/geos/xx.html -scroll down to find your country -scroll down to the “People” category -scroll down to the “economoy” category   Question 10 -scroll up to “background” information -you are also able to look at other websites to find other information -if you can’t find any information try to explain one of the examples we discussed yesterday in class

Posted: March 16, 2011

## Physical Science 10

Homework Sheet 5.8 Complete the Ionic Compounds questions 1 & 2.  This assignment will be marked.

Posted: March 15, 2011

## Physical Science 10

HOMEWORK Pg 195  Q 1, 3, 4, 5, 6,7,8, & 9    (P3 only up to question 5)   Crisscross Rule: Write the ionic charge above the symbol. Then crisscross the numbers using them as subscripts.     Metal Non-metal The formula is AlCl3 3+ 1-   Al  Cl

Posted: March 14, 2011

## Physical Science 10

Ionic compounds are made up of positive (Metal) and negative (nonmetal) ions. *Positively charged ions are called cations *Negatively charged ions are called anions The ions are present because the metal gives its valence electrons to the nonmetal making both of them stable now.     They conduct electricity o   THEY TRANSFER ELECTRONS   o   Table salt is NaCl    Read pages 188-189 Complete questions 1- 4 p 189

Posted: March 3, 2011

## Physical Science 10

TEST Friday March 4th  & activity 4.3 due for marks   Review       2 table was organized by atomic mass b. same group have similiar properties c. noble gases are very unreactive gases d. alkali metals include sodium, potassium and lithium e. halogens include fluorine, chlorine and bromine f. metalloids are elements that have both metallic and non metallic properties g. the atomic number increases from left to right across a row of the periodic table 4. A period is a row and a group is a column in the periodic table 5. a) metals are found on the left and centre. b) non-metals are found on the right. 6. a. Alkali metals from 1+ ions           b. Halogens form 1- ions 9. A - 6 B - 4 C- 1 D - 3 E - 5 F - 2 　 10. A ) Elements in the third row have three orbits b) Elements in the fourth row have four orbits c) The period in the table also represents the number of orbits in the element`s electronic structure 11. a) 13 b)2,8,3 c) cloest noble gas neon d) must lose 3 to form a stable ion e ) the ion will have a charge of 3+ 15. Metals, polymers, composites and ceramics 16. a) composite - for its strength b) ceramic - for its heat insulation c) metal - for its strenth d) polymer - chosen for flexibility e) composite - for its breathability and wrinkle-resistance           1

Posted: March 3, 2011

## Physical Science 10

TEST Friday March 4th   Review     2 table was organized by atomic mass b. same group have similiar properties c. noble gases are very unreactive gases d. alkali metals include sodium, potassium and lithium e. halogens include fluorine, chlorine and bromine f. metalloids are elements that have both metallic and non metallic properties g. the atomic number increases from left to right across a row of the periodic table 4. A period is a row and a group is a column in the periodic table 5. a) metals are found on the left and centre. b) non-metals are found on the right. 6. a. Alkali metals from 1+ ions   b. Halogens form 1- ions 9. A - 6 B - 4 C- 1 D - 3 E - 5 F - 2 　 10. A ) Elements in the third row have three orbits b) Elements in the fourth row have four orbits c) The period in the table also represents the number of orbits in the element`s electronic structure 11. a) 13 b)2,8,3 c) cloest noble gas neon d) must lose 3 to form a stable ion e ) the ion will have a charge of 3+ 15. Metals, polymers, composites and ceramics 16. a) composite - for its strength b) ceramic - for its heat insulation c) metal - for its strenth d) polymer - chosen for flexibility e) composite - for its breathability and wrinkle-resistance 1

Posted: March 2, 2011

## Ecolog Questions (2 sets)

Assigned Feb 8th 1.) What is environmental science? 2.) Why is Canada such a "resource-rich nation" ? 3.) Explain the expansionist and ecological approach on conservation? 4.) Outline the expansionist and ecological world views on conservation?   Assigned Feb 21   1.) List and briefly explain the main environmental problems listed below.   a) Overpopulation b) Depletion of resources (renewable and non-renewable) c) Pollution d) Extinction 　　 2.) Define and explain the differences between developed countries and developing countries?

Posted: March 2, 2011

## Physical Science 10

Test Friday March 4th   Activity 4.3 to be handed in by Friday as well.

Posted: March 2, 2011

## Environmental Science 123

Test Thursday March3, 2011