Monday September 26

1. Monday September 26 Warm Up What has the most mass in an atom? Electron cloud Neutron Proton electron Classwork: #47 Mixtures Notes #48 Content Writing Assignment Homework: #48 Content Writing Assignment

2. Combination of 2 or more substances that are NOT chemically combined • Each substance in a mixture keeps its identity bc the components do not react with each other • EX: pizza –mix of pepperoni, bread, cheese, sauce • EX: koolaid – sugar, flavor mix, water • EX: air in our atmosphere – oxygen, carbon dioxide, ect

3. appears to be a single substance because particles are evenly distributed (HOMOgeneous mixture) • DISSOLVING is the process where substances spread out evenly in a mixture • Particles so small they do NOT scatter light • The SOLUTE is the substance that gets dissolved • It must be soluble – able to dissolve • The SOLVENT is the substance that does the dissolving • The substance present in the largest amount is the solvent • EX: salt water – salt is the solute and water is the solvent • CONCENTRATION - measure of the amount of solute in a solvent (expressed in g/mL) • If a substance does not have a lot of solute it is called DILUTE • SOLUBILITY is the ability of a substance to dissolve at a certain temperature

4. Solution: Koolaid Solute: powder and sugar Solvent: water Solution: Atmosphere Solute: carbon, oxygen,ect Solvent: nitrogen Solution:Salt Water Solute: salt Solvent: water Solution: Coca-Cola Solute: carbon dioxide, flavoring Solvent: water Solution: Steel Alloy (carbon and iron) Solute: carbon Solvent: iron

5. Mixture with particles large enough that they separate • Suspensions scatter light • Called HETEROgeneousbc the particles are not the same • EX: italian dressing, snow globe • Mixture with particles that do not separate, but are large enough to scatter light • EX: milk, smog, muddy water

6. Italian Dressing • Chicken Noodle Soup Snow Globe • Milk • Smog • Muddy Water

7. Suspensions and Colloids Scatter Light

8. Content Writing Assignment • We want to improve your writing!!! • Topic sentence: what is a mixture: • 4 supporting details in paragraph • Three types of mixtures and what the difference is • An example of a solution you found • What is the solvent in your solution and how you know • What is the solute in your solution and how do you know (might be more than 1 solute) • Conclusion sentence – summary sentence

9. Tuesday September 27 Classwork: #49 M&M Observations #50 Solutions Practice Homework Complete #50 Warm Up 4. If a spoonful of salt is mixed with a glass of water what is the water called? a. solute b. solvent c. solution d. element

10. #49 M&M Observations:Melts in your mouth not in your hand: how to speed up dissolving • Place one m&m in your mouth, do not move your tongue or chew it time how long it takes for it to dissolve. Record • Place another m&m in your mouth you may move your tongue, time how long it takes to dissolve. Record • Place a 3rdm&m in your mouth you may chew and move your tongue, time how long it takes to dissolve. Record • What was the solute and the solvent in your solution? • What was the difference in times for dissolving the chocolate? • Using this information, What could you do to a solution that would make the solute dissolve faster?

11. #50 Solutions Practice

12. Content Writing Assignment You may: • Work on your paragraph • Meet with your writing group • Discuss with Stein & McDonald • Edit your paragraph

13. Wednesday September 28 Warm Up How could a sugar cube be dissolved more quickly in water? a. cool the water b. crush the cube c. heat the water d. stir the water Classwork: Solve Ms. Steins Dilemma #51 Graphic Organizer: Separating Mixtures Homework: #52 Describe a procedure to separate a mixture of salt, ground pepper, and pebbles Test Next Tuesday Oct 4

14. Ms Stein’s Dilemma Ahhhh I need to separate these mixtures…..

15. Distillation – uses boiling points of the two substances to separate them EX: boil a saltwater mixture to separate the water as steam and leave only salt How do we separate mixtures? Centrifuge – separates mixtures based on their densities Magnet – use a magnet to remove magnetic substances from non-magnetic ones EX: iron fillings mixture You can filter two substances that have different properties EX: sand and water, coffee and grounds

16. Density Boiling Point Magnetism Filtering

17. Thursday September 29 Warm Up What forms when particles of two or more substances are evenly mixed? a. compound b. suspension c. solution d. element Classwork: #54 Legos of Matter Activity #55 Legos of Matter Activity COntinued Homework:

18. #53 Classify Matter using Legos: Matter Mixtures – 2 or more things NOT chemically combined Pure Substances – there is only 1 type of thing… Element- pure substance that can not ne broken down by chemical or physical means Compound – Chemical combination of atoms from 2 different elements *in a specific ratio

19. See Ya Bye… but first An element is to a compound as bricks are to a house. Describe why this analogy makes sense. Can you come up with your own? T.O.D – Create your own analogy relating elements, compounds or mixtures

20. Friday September 30 Warm Up Which of the following correctly describes a compound? a. the atoms are combined in a specific ratio b. it has a positive charge c. it keeps the properties from the original elements d. it is a physical combination of atoms Classwork: Stellar Science Demonstration Homework:

21. Thank You Mr. Jackson • Write a Thank You card to Mr. Jackson for coming to show us his EPIC demonstrations You must include 4 sentences that tell: • which experiment you liked the best • How it relates to science content we have been discussing • Your content will be graded, due Monday!