GriffinScience » Solutions http://griffinscience.com 8th Grade Science at Spartanburg Day School Fri, 17 Jun 2011 23:17:42 +0000 en hourly 1 http://wordpress.org/?v=3.2.1
Tuesday Nov 30: Solutions http://griffinscience.com/2010/11/30/tuesday-nov-30-solutions/ http://griffinscience.com/2010/11/30/tuesday-nov-30-solutions/#comments Tue, 30 Nov 2010 23:37:23 +0000 Sam Harrelson http://griffinscience.com/?p=1502 No, it’s not 42 but it is a mixture with evenly distributed particles…

Solutions

]]> http://griffinscience.com/2010/11/30/tuesday-nov-30-solutions/feed/ 2 Grades Posted http://griffinscience.com/2009/10/22/grades-posted/ http://griffinscience.com/2009/10/22/grades-posted/#comments Thu, 22 Oct 2009 19:41:15 +0000 Sam Harrelson http://griffinscience.com/?p=440 Your up-to-date grades for the 2nd quarter are posted over on http://www.mygradebook.com, so head over and see how you currently stand in the class.

You may also want to look at the “Future Assignments” section as there may be a surprise very soon (as in tomorrow)…

]]> http://griffinscience.com/2009/10/22/grades-posted/feed/ 0 Class Notes for Wednesday October 21, 2009 http://griffinscience.com/2009/10/21/class-notes-for-wednesday-october-21-2009/ http://griffinscience.com/2009/10/21/class-notes-for-wednesday-october-21-2009/#comments Wed, 21 Oct 2009 19:42:41 +0000 Sam Harrelson http://griffinscience.com/?p=433 Here are the notes we covered in class for section 7.1 on Solutions, Colloids and Suspensions.

Remember, your homework is the Section Assessment #1-3 on page 227!

1. What is a solution?
2. What is the difference between a solute and a solution?
3. What is the “universal solvent”? Give examples of these types of solutions.
4. What are some examples of solutions without water?
5. What is a colloid? Give an example.
6. Does a colloid or solution contain larger particles?
7. What is a suspension? Please give an example.
8. What is the difference between a solution and a suspension?
9. Why do solutes seem to disappear when you mix them with a solvent?
10. What happens when an ionic solid mixes with water?
11. What happens when a covalent (molecular) solid mixes with water?
12. How can you tell the difference between solutions of ionic compounds and solutions of covalent (molecular) compounds differ in water?
13. What do solutes do to the freezing point and boiling points of solvents? Please give an example.
14. How does salt lower the freezing point of water?
15. How does antifreeze use the properties of solutes and solutions to protect car engines?

See you tomorrow!

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