Answer key and Summary notes

The answer key to the summary notes is here More Radiation Summary Notes ,which we will go over later, can be downloaded here  

Radioactivity

We learned about the devastating effects of the atom bomb and the theory behind the Manhattan Project.  Download the presentation here.  I gave you a worksheet on radiation.  You can check your answers here.

acids bases and salts

ACIDS BASES AND SALTS

ACID     +     BASE    -->     SALT    +    HOH

H-anion  +  cation-OH -->  cation-anion  + HOH

Neutralization  

Acids   release   H+ ions    in solution with water

Bases   release   OH- ions  in solution with water

The word “acidity” refers to the concentration of

Hydrogen ions    H+  in solution.  If there are more H+

Ions, then the solution is more acidic! 

The word “basic” refers to the concentration of

Hydroxide ions   or OH-  in solution. If there are more

OH- ions, the solution is more basic!

Acids absorb hydroxides to neutralize a base

Bases absorb hydrogens to neutralize an acid.

pH SCALE

A pH scale is a way of measuring the

Concentration of hydrogen ions in solution.

The scale goes from 1 to 14  

    1    2   3   4   5   6   7  8  9   10  11 12   13   14

very                        neutral                             very

acidic                                                               basic

Acids have a pH of less than 7

Bases  have a pH of more than 7

pH 7   is   H+ =  OH-

every stage on the pH scale is a 10fold increase

 so  pH 7 has 10²  more Hydrogens than pH 9.

Pure water is   pH 7

Milk is   pH 6

Lemons are  pH2 or 3

Bleach is pH   12

Baking soda is  pH 9

pH indicators

Some things change colour in the presence

Of an acid or a base

For example

Cabbage juice will turn pink for acid, blue for base

Litmus paper will turn pink for acid, blue for base

Phenolphthalein will turn pink for base and clear for

Acid

Bromothymol blue will turn blue for base and

yellow for acid

Universal indicator will turn many different colours

Red Wine or White Wine

We did a demo called"  red wine or white wine"  and did a lab where we looked at three unknown liquids.

Write a lab report due next period. It must include the following headings:

Hypothesis
Purpose
Procedure
Results
My hypothesis was proven right or wrong because....
Conclusion

EVALUATION   IS OUT OF 25 IN TOTAL, NO MORE THAN 3 PEOPLE WRITING A COMMON REPORT

5
presentation is out of 5.  for 5/5 it is typed  with illustrations or photos and emailed to msngscience@gmail.com.     for 4/5 it is pretty good but there are a few spelling mistakes.  for 0-3 out of 5 it is in pencil or messy

10
Clear writing is out of 10.  for 9/10 or 10/10, it is written with no English mistakes and it clearly communicates each part of the lab report.    7-8/10  it is very well written     for 5-6/10 some parts are not so clear and the reader must guess what you are trying to say.  0-4/10, it is minimally communicating what happened

10
Paragraphs are insightful and your observations are well done. this is out of 10.
             9-10/10,   your observations and conclusions are well written and logical.  It is brilliant
              7-8/10   your observations and conclusions are very well done
               5-6   your conclusions don't really logically follow from your results
                0-4   your conclusions are not relating to your results at all
     
ACKNOWLEDGEMENTS
write all names and who contributed what including the % of their contribution. so two people who contributed equally would be50%

EMAIL IT to  msngscience@gmail.com

Naming acids

Today we reviewed naming acids and I asked you to write 5 "...ide" acids and 5   "...ite " acids and also 5    "...ate" acids. also you did an exercise in naming acids last block

Science World Teens Night!!!! you must rremember to register beforehand

Sign up here:

https://www.scienceworld.ca/sweet-science-world-extravagant-evenings-teens

Drawing Lewis Structures of Ionic Compounds

Today, we practiced drawing lewis structures of ionic compound  Try these problems and see the answer key

Next day we will try drawing lewis structure of covalent compound. Here are the practice problems for those

practice practice practice

Recall that worksheet  Chemistry practice sheet and the  Chemistry practice sheet key. This was given for homework and you will be tested on this soon.

if you are done that, then there is another worksheet on types of reactions:
worksheet. Here is the answer key for types of reactions. Please write out these answers in your notebook and show me when done for work period marks.  There is a typo on this one:
Section 2 number 3 has a typo on answer key. The co-efficients should be...4, 5, 4,6 and not what they have on the key  

Number 3 section 3 is      1,2,2

Types of Chemical Reactions

Chemical reactions may be categorized as follows 

1.      Synthesis

2.     Decomposition

3.     Single replacement

4.     Double replacement

5.     Combustion

6.     Oxidation of metals

A Synthesis reaction:

element     +   element    -->    compound

Decomposition reaction:

Compound    -->   element     +     element

Or

Compound --> smaller compound    +   element

DOUBLE REPLACEMENT


single replacement

Combustion

Carbon based fuel + oxygen --> carbon dioxide + water

+ heat and light energy

Cell respiration looks like combustion,

BUT IT IS NOT. YOUR CELLS ARE NOT COMBUSTING

 IN THE MITOCHONDRIA

Glucose +   oxygen -->  carbon dioxide + water + energy for cell

Oxidation reaction

Metal +  oxygen   -->   metal oxide

ACID BASE REACTIONS ARE ALL NEUTRALIZATION REACTIONS

balancing lego equations, practice sheets and types of reactions

We practiced balancing equations using lego. make sure you finish this and hand it in to  msngscience@gmail.com

IF you are finished, practice your chemistry:

Recall that worksheet  Chemistry practice sheet and the  Chemistry practice sheet key. This was given for homework and you will be tested on this soon.

if you are done that, then there is another worksheet on types of reactions:
worksheet. Here is the answer key for types of reactions

The Law of Conservation of Mass

send to msngscience@gmail.com

Calcium and Water lab write up

We did notes on the Law of Conservation of Mass and we did a lab.  This is the criteria for the lab write up


Your lab must include the following

1.  First and Last names of all investigators
2. Purpose of lab:  write about how this lab illustrates the law of conservation of mass.  Explain how the lab relates to the law
3. Materials: write a complete list of materials that we used
4. Procedure: write a step by step procedure (including illustrations if it makes it clearer) that is so well written that another person could read it and replicate your actions exactly
5.  What is the question we are trying to answer?  Write the two chemistry equations which were our possible outcomes of this reaction?  Oxygen gas or Hydrogen gas?
6. Results:  Describe in detail what happened after you did the procedure.  Include any photos you took.  How did you know you made the gas, which gas?  And was it Calcium hydroxide that was made? How do you know?

7.  Write your conclusion in paragraph form.


EVALUATION   IS OUT OF 25 IN TOTAL

5
presentation is out of 5.  for 5/5 it is typed  with illustrations or photos and emailed to msngscience@gmail.com.     for 4/5 it is pretty good but there are a few spelling mistakes.  for 0-3 out of 5 it is in pencil or messy

10
Clear writing is out of 10.  for 9/10 or 10/10, it is written with no English mistakes and it clearly communicates each part of the lab report.    7-8/10  it is very well written     for 5-6/10 some parts are not so clear and the reader must guess what you are trying to say.  0-4/10, it is minimally communicating what happened

10
Paragraphs are insightful and your observations are well done. this is out of 10.
             9-10/10,   your observations and conclusions are well written and logical.  It is brilliant
              7-8/10   your observations and conclusions are very well done
               5-6   your conclusions don't really logically follow from your results
                0-4   your conclusions are not relating to your results at all
       

ACKNOWLEDGEMENTS
write all names and who contributed what including the % of their contribution. so two people who contributed equally would be50%

Chemistry Practice for Chem Charate!!

A really useful Chemistry practice sheet Here is the Chemistry practice sheet key.  Note there is another quiz next period

We went over compounds lately monatomic atoms and covalent compounds.

Now we are doing a unit on safety. Please do the reading, the homework and MAKE A POSTER SHOWING ALL THE RULES. SUMMARIZE ALL THE RULES IN 4 OR 5 STATEMENTS

1.    

                                                    WHMIS -  WORKPLACE HAZARDOUS 
                         MATERIALS INFORMATION
                         SYSTEM 

      THESE symbols are on the MSDS sheet for
       all chemicals    Materials safety Data Sheet. 

Follow teacher instructions

a.     If you wish to change instructions, check with teacher

b.     If you break anything or get hurt, report it REPORT ACCIDENTS

2.     No horseplay, fooling around

3.     Keep yourself safe

a.     Hair tied back, no loose clothing, shoes are closed

b.     If chemicals get on skin, use water

c.     Use eyewash if anything gets in eyes

d.     Wear goggles if needed

e.  If you wear contacts, inform the teacher

4.      Keep your area safe

a.     your work area is neat and organized

b.     you have your lab instructions

c.     aware of fire safety and chemical safety

5.     Keep the classroom safe

a.     Carry materials in a safe way

b.     Aware of fire safety procedure

c.     Don’t remove any experiments from the classroom

d.     Don’t do experiments without first checking with teacher.

6.      Hot and cold and chemical safety

a.     never assume the temperature of something.  Take precautions

b.     hot beaker and cold beaker look identical

c.     always point a test tube away from everyone

d.     when smelling a chemical, waft.


You will create safety rules by reading and summarizing the safety procedures in your text.  Then you will take the Finn Laboratory Saftey Test

The rules can be under the following categories:
HIGHEST PRIORITIES:
THESE RULES CAN BE SUMMED UP LIKE THIS
Talk to the instructor                     

KEEP ORGANIZED AND SAFE
Keep the classroom safe
Keeping your work area safe
Keep safe with your colleagues
Keep yourself safe
KNOW THE SYMBOLS
Know the correct symbols, WHIMIS symbols


COMMUNICATE AND REACT TO AN EMERGENCY
       Emergency procedures for fire, toxins, spills, and evacuation  


SAFETY ASSIGNMENT:  I divided you into groups and talked about WHMIS.  Make a poster of the 20 safety rules which I handed out in class. 
Your group must draw a comic showing all the safety rules on one side of the page. put numbers to show where the rule is being applied.   

RUBRIK:  out of 10
YOUR POSTER IS COMPLETE SHOWING ALL 20 RULES      5 marks
   it is missing a few of the rules   2-4 marks

the poster is neat and organized and easy to read    3 marks
      it could be better organized and not so cluttered  1-2 marks

the poster is remarkably artistic and creative and is different in some way   2 marks
    the poster is very well done and artistic 1.5 marks
    the poster is artistic    1 mark