monday september 26

Monday September 26Warm Up

What has the most mass in an atom?

a.Electron cloudb.Neutronc. Protond.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 sugarSolvent: water

Solution:Salt WaterSolute: saltSolvent: water

Solution: Steel Alloy (carbon and iron)Solute: carbonSolvent: iron

Solution: AtmosphereSolute: carbon, oxygen,ectSolvent: nitrogen

Solution: Coca-ColaSolute: carbon dioxide, flavoringSolvent: 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 27Warm Up

4. If a spoonful of salt is mixed with a glass of water what is the water called?

a. soluteb. solventc. solutiond. 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 3rd 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?

Candy Piece

Dissolving Time

1

2

3

#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 28Warm Up

How could a sugar cube be dissolved more quickly in water?

a. cool the waterb. crush the cubec. heat the waterd. 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

pebblesTest 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 themEX: 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 onesEX: iron fillings mixture

You can filter two substances that have different propertiesEX: sand and water, coffee and grounds

How do we

separate mixtures?

Boiling PointDensity

Magnetism

Filtering

Thursday September 29Warm Up

What forms when particles of two or more substances are evenly mixed?

a. compoundb. suspensionc. solutiond. 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 firstAn 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 30Warm Up

Which of the following correctly describes a compound?

a. the atoms are combined in a specific ratiob. it has a positive chargec. it keeps the properties from the original elementsd. 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!