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Title: molecular mixing and the mole
Description: these are detailed notes of Submicroscopic Particles and molecular mixing. These notes talk about Electrical attractions between submicroscopic particle, hydrogen bonds, dissolving, solubility, and moles. These notes are from 10th grade in a grade level class.
Description: these are detailed notes of Submicroscopic Particles and molecular mixing. These notes talk about Electrical attractions between submicroscopic particle, hydrogen bonds, dissolving, solubility, and moles. These notes are from 10th grade in a grade level class.
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Chapter 10- Molecular Mixing and The Mole
• Submicroscopic Particles
◦ Substances are made of submicroscopic particles
‣ Ionic compounds
• Made up of ions
‣ Covalent compound
• Made up of molecules
‣ Elements
• Made up of atoms
• Electrical attractions between submicroscopic particles
◦ Dipole- separation of charge
‣ Ex
...
Polar molecule (water) when in the presences of the ionic compounds
◦ The positive ion is attracted to the negative end of the molecule
◦ negative ion is attracted to the positive end of the molecule
◦ This is called an Ion-dipole attraction
◦ Too many ion dipole attraction will disrupt the ionic bond
‣ Ex
...
water
◦ Hydrogen Bond- the attraction between hydrogen and the negatively charged atom of another
molecule (oxygen)
• The Hydrogen Bond
◦ The strength of a H bond depends on
‣ 1
...
How strongly nonbonding e- on one molecule can attract a H atom on another molecule
• Importance of the H bond
◦ Gives water many of its properties
◦ Found in DNA, proteins, carbohydrates
• Dissolving
◦ The component that has the largest amount is the solvent
◦ The other components the solutes
‣ EX
...
Insoluble in water: sand and glass
◦ Just because a material isn't soluble in one solvent, doesn't mean it won't dissolve
...
Sand and glass are solvable in hydrofluoric acid
‣ Ex
...
Styrofoam is insoluble in water, but solvable in acetone
• Solubility and temperature
◦ solubility increases with increasing temperatures
◦ Hot molecules have greater kinetic energy and can collide with the solid solute with more force
◦ Solids
‣ Ex
...
Makes the molecules of CO2 gas leave the drink faster
• Solutions (review)
◦ To make a solution, a solute must dissolve in a solvent
◦ Saturated solution- where no more solute can dissolve
◦ the point at which a substance will receive no more of another substance in solution
◦ Unsaturated solution- a solution that has not reached the limit of solute that will dissolved
◦ Concentration- how much solute is dissolved in a solution
• Concentration
◦ Concentration of solutions= Amount of solute/ amount of solution
◦ Amount of Solute= concentration of solution X amount of solution
◦ Amount of solution= amount of solute / concentration of solution
THE MOLE (unit of measurement)
• Mole means "pile"
• Mole- 6
...
A couple of coconuts = 2 coconuts
◦ ex
...
02 X 10 molecules
◦ 1 mole of marbles would cover the entire land
area of the 50 untied states
◦ 1 mole of sugar= 1 cupful because molecules
are so small
• Review the underlined terms
◦ An aqueous solution of sucrose that has a
concentration of 1 mole of sucrose per liter of
solution had how many molecules of sucrose
per liter?
‣ 6
...
Add atomic mass for the compound in the problem
‣ 2
...
Multiply by the grams
‣ 4
...
Make sure your solution is in "liters"
‣ 6
Title: molecular mixing and the mole
Description: these are detailed notes of Submicroscopic Particles and molecular mixing. These notes talk about Electrical attractions between submicroscopic particle, hydrogen bonds, dissolving, solubility, and moles. These notes are from 10th grade in a grade level class.
Description: these are detailed notes of Submicroscopic Particles and molecular mixing. These notes talk about Electrical attractions between submicroscopic particle, hydrogen bonds, dissolving, solubility, and moles. These notes are from 10th grade in a grade level class.