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

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

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

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

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

Snow Globe Chicken Noodle Soup Italian Dressing Milk Muddy Water Smog

Suspensions and Colloids Scatter Light

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

Tuesday September 27 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 Classwork: #49 M&M Observations #50 Solutions Practice Homework Complete #50

#49 M&M Observations: Melts in your mouth not in your hand: how to speed up dissolving 1.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 2.Place another m&m in your mouth you may move your tongue, time how long it takes to dissolve. Record 3.Place a 3 rd m&m in your mouth you may chew and move your tongue, time how long it takes to dissolve. Record 4.What was the solute and the solvent in your solution? 5. What was the difference in times for dissolving the chocolate? 6.Using this information, What could you do to a solution that would make the solute dissolve faster?

#50 Solutions Practice

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

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

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

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 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 How do we separate mixtures ?

Boiling Point Density Magnetism Filtering

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 :

Matter Pure Substances – there is only 1 type of thing… Mixtures – 2 or more things NOT chemically combined 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 #53 Classify Matter using Legos:

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

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 :

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!