1. Measuring Matter Measure amounts of something with three different methods— by count, by mass, and by volume.

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3. 1 mole of atoms is 602,000,000,000,000,000,000,000 atoms!

4. 602,000,000,000,000,000,000,000 particles Avogadro’s Number

7. The Pacific Ocean contains 1 mole of mL of water.

8. Which weighs more? Which has more animals? 6.02 x 10 23 atoms of C 6.02 x 10 23 atoms of Ne (20 grams)(12 grams) Which weighs more? Which has more atoms? The number of grams in a mole of particles is different by substance.

10. A mole of any substance contains Avogadro’s number of particles, or 6.02  10 23 particles. (particles = atoms, molecules, units…) Particles Moles 3.0 mol x 6.02 x 10 23 atoms = ______ atoms 1 mol Moles Particles 1.5 x 10 24 molecules x 1 mol = ___ mol 6.02 x 10 23 molecules Type 1 Type 2

11. _________________ = 1 mol How many molecules are in 2.12 mol of propane gas (C 3 H 8 ) ? 2.12 mol x Moles Particles 1.28 x 10 24 molecules Type 1 6.02 x 10 23 molecules ____ molecules in a BOX!!!

12. _____________ = 6.02 x 10 23 atoms Particles Moles 1.25 x 10 23 atoms x 0.208 mol Type 2 1 mol ___ mol in a BOX!!!

13. ________________ = 6.02 x 10 23 molecules How many moles is 2.17 x 10 24 molecules of Br 2 ? Particles Moles 2.17 x 10 24 molecules x 3.60 mol Type 2 1 mol ___ mol in a BOX!!!

14. x 4 atoms = 1 molecule How many atoms are in 1.14 mol SO 3 ? 1.14 mol x 6.02 x 10 23 molecules 1 mol Moles Particles 2.75 x 10 24 atoms Type 1 (plus) WS Moles & Molar Mass in a BOX!!!