power notes elements, compounds and mixtures- day 2
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You Will Need:1. Pencil, Colored pencils2. Elements, Compounds and
Mixtures – 1 sheet 2 sides – Bookshelf – These
are pages 3 & 43. Cornell Notes from yesterday
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Test #3 Retakes1. Front Board and Learning Point
for specific times2. Test #3 Returned yesterday3. Due back by Friday – Signed and
CorrectedRemember to explain WHY you
missed the multiple choice questions
3. Timer-Designer – Log in
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Quick Writes will not be grade for points but for participation and honesty.
1. You are allowed to use your brain, any notes, labs or worksheets we have done in class.
2. You may not use your textbook or interactive reader.
3. You will have 10 minutes to complete as many questions as possible.
4. With a colored pencil, you will grade your own.
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In Charge of Leading Discussion1. Log into Learning Point2. Daily Assignments3. This Week4. Open “Power Notes: Elements,
Compounds and Mixtures” slide share
5. Use your abbreviation skills6. R & R – Pgs 1 & 2
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Elements are pure substances made of only one kind of atom.
1. As we have learned, atoms are tiny structures found in all matter.
2. Most substances contain many different atoms.
3. It is how those atoms are arranged that determine whether you have an element, compound or mixture.
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1. One kind of atom2. Pure (because all particles are the
same)
3. Smallest particle to retain identity of the element
4. Separated only in nuclear reactions
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Particles look like:
Every atom looks exactly
the same w/ the same number of
protons
Oxygen
Hydrogen
11
1
88
8
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Example:
Your Example?
Aluminum: Every atom of
aluminum in this can is exactly
the same
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1. Two or more kinds of atoms chemically bonded
2. Pure (because all particles are the same)
3. Smallest particle to retain the identity of the compound (SET RATIO of particles)
4. Separated or rearranged in chemical reactions CO
2
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Particles look like:
Every compound looks
exactly the same w/ the
same set ratio
Carbon Dioxide – CO2
Sodium Chloride - NaCl
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Example:
Your Example?
Salt: Every molecule of the compound NaCl is exactly the
same
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1. Two or more elements and/or compounds blended together physically
2. Not pure (because all the particles are not the same)
3. Separation through distillation, magnetic, evaporation, density, or particle size
4. No set ratio
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Particles look like:
Each particle keeps its own
identity….they are just “blended”
together
Mixture #1
Mixture #2
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Examples:
Your Examples?
Heterogeneous: Different components are easy to see in
this type of blending
Homogeneous: Different components are difficult to see
because they are evenly distributed
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1. Based on your notes, LABEL the illustrations as Elements, Compounds or Mixtures
2. Then, Write the letters A, B, C, D or E from the pictures to match their description.
3. Classify the pictures as(CROSS OUT MOLECULE)
• ATOM• COMPOUND• ELEMENT
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Compound
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Mixture
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1. A solution is a mixture where all the components blend together to look like one substance.
2. A solution is a homogeneous mixture that appears to be a single substance.
3. The solution is composed of particles of two or more substances that are distributed evenly among each other and have the same appearance and properties throughout.
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1. In solutions, the SOLUTE is the substance that is being dissolved and usually is the smaller quantity in the mixture.
2. The SOLVENT is the substance in which the solute is dissolved and usually is the larger quantity in the mixture.
3. It is the SOLVENT that is doing the dissolving.4. Go to page 144-145 in your textbook: • A) Copy example in Book• B) Give your own example – Groups can have
the same example
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Topic: Solutions (next 5 slides)
NameDatePeriod
Homogeneous • 2 or more things evenly blended and disappear into each other
Solute • Smaller quantity by %
Solvent • Larger quantity by %
Solution • Homogeneous mixture
Examples 1) Dish soap
2) (your example)
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Heterogeneous • 2 or more things put together (blended) but still can be individually seen
• No set Ratio
Example 1) Salad, Pizza, Trail Mix, Hamburger, Taco
2) (your example)
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Saturation Level
What does this mean?
What does this look like? (color)
Unsaturated
Saturated
Supersaturated
•Mixture contains more solvent than solute
•Able to dissolve more solute
•Mixture contains the % of solute completely dissolved by solvent
•Not able to dissolve more solute•Mixture contains the % of solute unable to be dissolved by the % of solvent at the given temp.High temp usually = higher
solubility
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Have you ever put sugar put into lemonade and see the grains of sugar sink to the bottom and not dissolve?
This is because the lemonade (solution) is supersaturated. In other words, there is not enough water (solvent) to completely dissolve the sugar (solute).
Temperature and Pressure can affect saturation levels.
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1. We now know the definition of Element, Compounds & Mixtures
2. What do their particles look like?
End of Cornell Notes
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1.Signed and Corrected Test – Due Tomorrow
2.Complete Power Notes – Elements, Compounds and Mixtures –
3.Pgs. 1 & 2 + Cornell Notes