Presentation on theme: "Honors Chemistry Unit 7: Moles & Formulas Do Now Exercises"— Presentation transcript:
1Honors Chemistry Unit 7: Moles & Formulas Do Now Exercises
2Do Now: Mon (1/7/13) Find & correct the mistakes in the formulas. a. Calcium chloride CaClb. Lithium nitrate Li3Nc. Iron (III) oxide Al3O2Find & correct the mistakes in the names.a. MgO magnesium oxygenb. CaCO3 calcium carbon oxidec. N2O4 tetranitrogen dioxideGoal: Review & Practice Semester 1 concepts.Do Ester lab
3Goal: Discover the chemical meaning of “mole.” Do Now: Tues (1/8/13)Pass your quiz!!!Goal: Discover the chemical meaning of “mole.”
4Do Now: Wed (1/9/13)*You must SHOW WORK with UNITS to receive credit for completing this Do Now.1. How many moles are in 3.24 x molecules of CO2?2. How many atoms are in 3.50 moles of sodium?Goal: Use the mole concept to calculate mass and number of particles for different substances.Explore the concept of percent composition, empirical formula and molecular formulas.
5Do Now: Thurs (1/10/13) What is a (chemical) mole? Using words (or chart or diagram or picture) relate mole with molar mass and Avogadro’s number.Goal: Using experimental analysis, determine the empirical formula of a compound.
6Do Now: Fri (1/11/13) Ch.6 problem, #117 in text – p. 201 Goal: Discover the various types of reactions.
7Isopropyl alcohol (rubbing alcohol) is composed of C, H and O Isopropyl alcohol (rubbing alcohol) is composed of C, H and O. Combustion of 0.255g of isopropyl alcohol produces 0.561g of CO2 and 0.306g H2O. Determine the empirical formula.