Science Lab

Science Lab: Observable Properties of Matter

Names of Group Members:  __________________________________________

Question:  How do the properties of various types of matter change when water (H20) is added? 

Hypothesis: (4 marks)  If polymer crystals are mixed with water, we think they will  _____________________________________________________________________________

If corn starch is mixed with water, we think it will _____________________________________________________________________________

If baking soda is mixed with water, we think it will _____________________________________________________________________________

If baking soda is mixed with vinegar, we think it will _____________________________________________________________________________

Materials: 

3 clean, glass bowls/cups/beakers		measuring spoons
hot water		stirring rod or spoon
polymer crystals		paper towel/colored paper
cornstarch		vinegar
baking soda

Procedure: 

1. Record your observations of each sample of matter on the chart in the column - before H2O.

2.  Get one cup of hot (not boiling) water in a beaker.

3.  Put ½ tsp of polymer crystals into the water.  Stir for 10 seconds.,

4.  Record your observations on the chart in the column – in H2O.

5.  Leave the crystals in the beaker of water as we will come back later and record more observations. 

6.  Put 2 tablespoons of cornstarch in your cup/bowl. 

7.  Add 1 TBSP (15 mL) of water while stirring the cornstarch. 

8.  Add 1 more TBSP of water and stir. 

9.  Record your observations on the chart in the column – in H2O.

10.  Put 2 teaspoons (5 mL) of baking soda in the 3^rd bowl. 

11.  Add 1 tsp of water while stirring the baking soda.

12.  Add 1 more tsp of water and stir.

13.  Record your observations on the chart in the column  – in  H2O.

14.  Now, add 1 TBSP (15 mL) of vinegar to the baking soda and water mixture. 

15.  Record your observations on the chart in the column – after vinegar.

16.  Go back and record your observations in the column – after 5 min. in H2O.  

Data and Observations: (10 marks)

Compound	Before H2O	In H2O	After 5 minutes in H2O	In vinegar
Polymer Crystals	colour - taste - texture- odour- clarity -	colour - taste - texture- odour- clarity -	colour - taste - texture- odour- clarity -
Cornstarch	colour - taste - texture- odour- clarity -	colour - taste - texture- odour- clarity -	colour - taste - texture- odour- clarity -
Baking Soda	colour - taste - texture- odour- clarity -	colour - taste - texture- odour- clarity -	colour - taste - texture- odour- clarity -	colour - taste - texture- odour- clarity -

Analysis:

1.  Which of the compounds underwent the most drastic observable change when placed in water? (1 mark)

Look up polymer on this site: http://weirdsciencekids.com/DefinitionPolymer.html  Write the definition in your own words.  (1 mark)

 Why do you think this compound changed so much?  (2 marks)

2.  Do you think any of the compounds would have reacted differently if the water was a different temperature?  Explain.  (2 marks)

3.  What do you think would have happened to each of the compounds if the amount of water added was doubled and the amount of compound was kept the same?  (3 marks)

Conclusion:

1.  Were your hypotheses for each compound correct, partly correct or incorrect?  (4 marks)

Application: 

1.  What things have you learned from doing this experiment?  (3 marks)

2.  Can you see yourself using any of the information learned here in the future?  Explain. (2 marks) 

Group Evaluation – Decide as a group what mark each member has earned.

Name of Student	Attention (focussed, concentrated, stayed with group)	Attitude (cooperative, positive, helpful)	Responsibility (was careful with equipment, obeyed directions, cleaned up)	Total
	/5	/5	/5	/15
	/5	/5	/5	/15
	/5	/5	/5	/15

Art Project

Students will receive a mark on their second trimester report card based entirely on this ONE project in art.

Here is what it is about:

Students will basically choose to complete  any project that falls under the wide umbrella term "art".  It should be something that takes between 3 and 10 hours. They can bring it in for us to see any time between now and March 3rd.

Here is an interesting video that we will watch in class to help us understand the importance of being creative:

The project should be completed outside of school time, but if students want to work on it in class or use some supplies from our art room, they may.  The last 45 minutes of many of the next days in February will be opportunity for them to quietly work on their project while I read a book out loud to them that is connected to our Social Studies Unit.  (The Strength of His Hand by Lynn Austin)

Here is the assignment sheet that students were given:

Art Project Proposal

Name (s)___________________________________________________

1.  What is your project?  Name it or describe it.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2.  Where did you get this idea?  (website, book, friend, imagination etc.)

__________________________________________________________________________________________________________________________

3.  What materials will you need?  List everything here:

4.  Check off all the materials you are able to supply yourself.  Now write here the materials that you will need help getting.

5.  How long do you think it will take you to complete this project?  (“Don’t bite off more than you can chew.” You don’t need to spend more than 10 hours on this.)

_____________________________________________________________

Marking Rubrics

Self Evaluation

Did you spend the appropriate amount of time on this project? (approx. 3-10 hours)	Yes/ No Explain:
Did you get help on this project?  (which is totally fine, I just want to know)	Yes/ No If so, who:
Did you give this project your best effort?	Yes/ No Explain:
What was your favourite part of doing this project?	Explain:
Are you happy with the finished product?	Yes/ No Explain:
What mark do you think you deserve on this project?	A   B   C   D  ________%

Teacher Evaluation

Appearance (colour, shape, size, texture,) Aesthetic value Wow Factor	1   2   3   4   5   6   7   8   9   10
Amount of effort evident (Was adequate time spent to make the project as good as possible?)	1   2   3   4   5   6   7   8   9   10
Creativity, Inventiveness, Imagination or Precision, Structure, Soundness (depending on type of project)	1   2   3   4   5   6   7   8   9   10
Total ________                                                                                              30

Here are a few examples of past student projects:

FSA Practice

FSA Practice

Click on this link to practice for the FSA's.  

1. Make sure you click on Central Okanagan (23) as your school district.
2.  Then click on the test you want to practice. Grade 7 Reading or Grade 7 Numeracy (Math)   It will automatically put in a pretend username and password.  
3.  Hit Log on. 
4.  It will show you a log on that puts "Practice" as the name of the student.  Click "Yes" 
5.  Do the test with a calculator, a piece of scrap paper and TAKE YOUR TIME!  Don't guess!  Work out the answer first and then match it to the choices.  If it's not there, try a different strategy.  Reread the question a few times.  Read carefully!  
6.  When you are done, hit "Submit."  It will tell you your score.  
7.  Then, you can hit "Go Back" to see what the questions were and you can try them on your own again to see what you did wrong.  (Obviously this part isn't available when we do the FSA's for real. ) 

Homework and Announcements for January 25th to 29th

   Grade 7 Homework Sheet

 Monday January 18^th to Friday, January 26^th

 

KCC Relate Youth – Dinner at Robideaus from 4:30 to 6:45.  No bottle depot run.  

Gr. 7 Basketball – The practice times have switched.  The girls will practice on Wednesdays and the boys will have their practices on Thursdays. The times are from 3:15 to 4:30. The cost to be on the team is $50.  Game schedules will come out soon.  

Weekly Challenge –  How did last week’s challenge go - to give 3 genuine, sincere, positive compliments a day.?  We have been talking about and already preparing for this week’s challenge – THE HEALTHY BREAKFAST CHALLENGE!  It is such an important habit to get into – one that affects you physically, emotionally, and academically.  We have watched a nutrition video and had a great discussion about this.  Let’s do it!  We will celebrate on Friday morning with crepes for breakfast.  I will make the crepes if everyone brings a healthy food to fill it with. 

We have begun preparing and practicing for the Foundational Skills Assessment that will take place during the days of February 15^th, 16^th and 17^th.  Please try not to make any appointments for your child during this time.  

Starting the first week of February, the grade 7’s will be joining with the grade 8’s and 9’s in Middle School Electives.  Mr. Kelly will have elective sheets ready to hand out to the grade 7’s to make their selections this week.   

Science – There is an assignment already up on the blog to complete for Wednesday.  On Friday, we will spend the afternoon in the Science Lab completing a Chemistry Lab.  Hopefully students will not miss this day of school as it is very difficult to make up this lab assignment. 

Science Questions

Science 7 – Chemistry – Mass and Volume

Please skim read pages 89 to 100 first. 

Pages 100 – 103 in Science Probe

Name __________________

Read pages 100-103 in your textbook and answer the following questions in complete sentences.  Once you have completed the assignment, print it off and hand it into the blue box. 

1.  What is the definition of matter?

2.  What is mass?  Does a substance’s mass ever change?

3.  How is mass measured?

4.  What is the difference between volume and mass?

5.  What do you use to measure the volume of a liquid?

6.  What is the formula for calculating the volume of a rectangular solid?

7.  How is it possible to measure the volume of an irregular solid?

8.  What is an everyday situation in which measuring mass and volume is important?