PPT-The Mole How do we measure the amount of a substance?

Matter is made of different kinds of particles We count the number of particles of that substance Since there are a very large number of particles in any substance we need to define a unit of measure. A Chemist’s “Dozen”. http://www.ccs.k12.in.us/chsteachers/VKundrat/MOLE_DAY_EXPLOD%5B1%5D.gif. The Mole. The particles that make up matter (ions, atoms, and molecules) are . extremely small. Only large amounts of these particles can be weighed. In order to simplify these large numbers we use . 1 stoichiometric equivalences stoichiometric mole ratios Mole-to-Mole Conversions Hi I'm Malcolm the mole. habitat. . You might have seen my house roof but there is a little Chance of you seeing me or other . moles. because I live Under the ground . You can find moles in woodland, grassland and farmland And all around the U.K. If you find a mole hole don’t kick it down because The moles babies are under there.. Chemistry 3/18/19. Drill. Write down these questions. While watching the video clips, write the answers, and when done, discuss with your row:. Why is airbag use in cars important?. What is the chemistry involved in air bag inflation?. Atomic mass. Atoms of different elements have different masses. . Mass of a single atom is incredibly small so a special unit called atomic mass unit (. amu. ) is used. . Atomic Mass. Atoms are composed of three particles:. Chemical Quantities. Measuring doughnuts:. 1 dozen = 12 doughnuts (count) . 1 dozen = 500 g doughnuts (mass). 1 dozen = 1 box doughnuts (volume). Measuring steam (H. 2. O gas):. 1 mole = 6.02 x 10. 23 . big. concepts of Chemistry.. The mole is a . counting. number, just like. 1 dozen = . 12. things . 1 score = . 20. things . 1 ream = . 500. things . 1 mole = . 6.022 x 10. 23. . things or . Use . the coefficients to predict the amount of reactant consumed or product formed. The ratio of the coefficients is a ratio of the moles taking part in a reaction.. Reactants (on the left of the arrow) are consumed. 23 . particles. . So a “mole” is a number, very similar to a dozen. . A dozen = 12 . A mole (mol) = 6.022 x 10. 23. It can be found in your reference packet on page one. Avogadro’s number = 6.022 x 10. David Strauch Thesis Committee Lyndon Wester Chairperson Mary McDonald Matt McGranaghan Keywords Mole Cultural b12 Speaking of mole13 Getting a taste of mole47 62 Aspects of Mesoamerican plant dom Figure 1Mole mounds tend to be circular with a plug in themiddle Compare with the pocket gopher mound in Figure 2A single litter is born inMarch or April averagingthree or four naked youngYoung moles The Mole in Chemistry . Not this!!. Not this!!!. The Mole. The mole is a counting unit. 1 pair = 2. 1 dozen = 12. 1 mole = 6.022 x 10. 23. atoms. This number is known as Avogadro’s number after Italian chemist . Chapter 9. History. About 200 years ago scientists needed a unit of measure that connected the mass of a molecule or atom with how many of them there were. . Amadeo Avogadro proposed his hypothesis in 1811. At that time, there was no data on the number of particles in a mole, or an agreement on any atomic weights or the standard. . 2. .. 2.) How many moles are there in 63.2g of Cl. 2. ?. 60.4L O. 2. . 22.4L O. 2. . 1 mol O. 2. . = 2.7 mol O. 2. 63.2g Cl. 2. 70g Cl. 2. 1mol Cl. 2. = 0.903mol Cl. 2. Ch. . 9. Math In Chemistry.