Link to google classroom

Follow the link below to Google Classroom and use your username and password from school to log in.

https://classroom.google.com/u/1/h

Google Classroom Access and Class Codes

To access Google Classroom, you will first need to enter Academic Workspace.

To enter Academic Workspace

1. Google TDSB Academic Workspace and select first link
2. Enter you login and password you use at school; remember your user name is your student number

To enter Google Classroom

1. Click on the Google Apps tab and select Classroom

To join your class

1. Click on the + sign beside your name in the top right hand corner of the page
2. Select Join class
3. Enter your class code:

7A: ymg2d4
7B: xewfpl
7C: sd7jjcm
7D: nrh2k02
7E; jik5rg

Congratulations! Your in!

At this point, some classes are brainstorming filter designs. Please follow these steps when brainstorming:

1. Read about water filter design by exploring the links provided below

2. Consider what would be a good design for a water filter? 

3. Using the brainstorming worksheet provided in class, draw a filter you believe would work well to separate a mechanical mixture

4. Remember to add detailed notes to your diagram that explains the rationale behind the materials and design you used

5. You will also need to include estimated measurements for your design; remember that the filter must fit inside a 30 cubic centimeter box

Links to explore:

http://www.instructables.com/id/coffee-cup-water-filter/

http://www.hometrainingtools.com/a/water-filtration-science-project/

http://www.kindergarten-lessons.com/nature_education.html

http://www.ourtravellifestyle.com/tips-and-planning/travel-tips/science-fun-experiments-travel-kids/

http://www.science-sparks.com/2013/07/12/filtering-water/

http://www.doctordirt.org/teachingresources/soilfilter

https://crayonswandsandbuildingblocks.wordpress.com/tag/inquiry/

http://www.h2ouniversity.org/html/3-5_sci_clean_water.html

http://kitchenpantryscientist.com/survival-science-water-filters/

https://www.youtube.com/watch/?v=0K3skAECZRI

Section 8.1 Notes

Solutions: Concentration and Solubility

Solutions

• are homogeneous mixtures
• have the same appearance throughout

Alloys – a special name for solid solutions (e.g., steel)

Solute – the substance that dissolves

Solvent – the substance which does the dissolving

E.g., in sugar and water, the water is the solvent and the sugar is the solute

Water – The Universal Solvent

Water is able to dissolve many different solids, liquids and gases

Not all substances are soluble in water; e.g., fat is insoluble in water

Solubility

Solubility can be defined as:

a)      the relative ability of a solute to form a solution when added to a certain solvent

b)      the maximum amount of solute you can dissolve in a fixed amount of solvent at a given temperature

Forming a Solution

To form a solution, the solute particles must be attracted to the solvent particles; e.g., salt particles are attracted to water particles

We can say that salt is soluble in water because it dissolves in water

Salt and olive oil will not form a solution because the salt particles are not attracted to the oil particles

We can say that salt is insoluble in olive oil because it does not dissolve in olive oil

Concentration – Qualitative

A concentrated solution: A solution that contains a lot of dissolved solute compared to the amount of solvent; e.g., a can of frozen orange juice

A dilute solution: A solution that contains very little solute compared to the amount of solvent; e.g., a solution of water and the can of frozen orange juice

Concentration – Quantitative

The concentration of a solution can be written as the amount of solute dissolved in a specific amount of solvent.

For example, if 5 grams of salt are dissolved in 500 milliliters of water; the concentration is 5g/500mL

Often we reduce this to a value out of 100mL; so it can be written as 1 gram/100mL

This can also be called a 1 percent solution; this means that for 100mL of solvent there is 1g of solute dissolved in it

Saturation

Saturation: The maximum amount of solute that can be dissolved in a certain amount of solvent at a certain temperature

Saturated Solution: one that has been saturated; no more solute can be dissolved

Saturation Point: The point at which no more solute can be dissolved in a fixed volume of solvent at that temperature

If more solute can be dissolved into a solvent at a given temperature, then it is called an unsaturated solution.

Sometimes a saturated solution can be cooled below a critical temperature to form a supersaturated solution. This type of solution contains more solute that would normally be dissolved in the solution.

Winnipeg Water Advisory 2015

Non-Newtonian Fluids Videos

Review Activities for Chapter 7 Test

Chapter 7.1 Quiz

http://www.sciencesource.ca/quizzes/quiz_07_1BOmTe.htm

Chapter 7.2 Quiz

http://www.sciencesource.ca/quizzes/quiz_07_2b3Xn9.htm

Chapter 7 Quiz

http://wps.pearsoned.ca/ca_school_ontarioscience_7-8/102/26140/6692048.cw/content/index.html

Chapter Labeling Practice

http://www.sciencesource.ca/resources/gr7_matchquiz_ch07/

Chapter Matching Practice

http://www.sciencesource.ca/resources/gr7_matchquiz_ch07/

Chapter 7.1 Crossword

https://sciencesource.pearsoncanada.ca/puzzles/puzzle_07_1/

Chapter 7.2 Crossword

https://sciencesource.pearsoncanada.ca/puzzles/puzzle_07_2/

Eureka Videos About Particle Theory

Section 7.1 Notes

Classification of Matter by Composition

Matter – anything that has mass and takes up space

Mass – the amount of matter in the object (grams, Kg)

Volume - the amount of space that matter occupies (m³, mL)

Solid - matter that has a definite shape and volume.

Particles are vibrating in place, but they cannot move freely.

Liquid – matter that does not have a definite shape but does have a definite volume; a liquid takes the shape of its container.

Particles can move freely past each other, however, they remain in a fixed volume.

A gas is matter that does not have a definite shape or volume.

Gas particles can move freely and fill the spaces they are in.

Pure substance – a substance made up of only one type of matter; e.g., sugar, distilled water, copper wire are all pure substances. Pure substances appear uniform or homogeneous; this means that every part of the substance has the same composition as every other part.

Mixture – a substance made up of two or more different substances; e.g., pizza, soft drinks, eggs. Each substance inside the mixture keeps its own properties; e.g., you can’t see the sugar in soft drinks, but you can taste it.

Classifying Mixtures – mixtures can be grouped into 2 major categories; mechanical mixtures and solutions.

Mechanical mixtures – the different parts of the mixture can be seen; the mixture does not have the same properties throughout.

Sometimes, it’s easy to see the different types of matter throughout the mixture; e.g., snack mix; sometimes you need a microscope.

These mixtures are said to be heterogeneous, this means that it is made up of different substances with different appearances and properties.

Solutions – these mixtures have the same appearance throughout, but they are made up of two or more substances. Solutions are made when you dissolve one substance into another.

All solutions are said to be homogeneous mixtures because they look the same throughout even though they are made up of different substances; e.g., dissolving sugar in tea.