14. Metric facts:

1. 14. Metric facts: 1 meter was originally defined as the distance from equator to north pole divided by? 10 million One tenth of a meter is called a decimeter How many centimeters (cm) in one meter? 100 How many millimeters (mm) in one meter? 1000 The volume of 1,000 cubic centimeters (cm3 or cc) is called a liter. How many milliliters (mL) are in a liter? 1000 A milliliter (mL) is what fraction of a liter? 1 thousandth A milliliter is how many cubic centimeters? 1 A cubic centimeter of water has the mass of how many grams? 1 A liter of water has the mass of how many grams? 1000 15. It’s December and you want to heat up your pool. It is currently 50oF (10oC) and you want it raised to 80oF (27oC) Using an electric heater, how much will it cost if 1 kilowatt-hour is 11 cents? The pool is 7.0 meters long, 5.0 meters wide and 2.0 meters deep. A. What’s the volume in cubic meters? ______ B. What is the volume in cubic centimeters?___________ C. What is the total grams of the water? ____________ 7.0m x 5.0m x 2.0m= 70 m3 70 m3 x 100cm/mx100cm/mx100cm/m= 70,000,000 cm3 since 1cm3 water=1 g  70,000,000 grams A calorie is defined as the energy needed to raise one gram of water one degree Celsius. D. How many calories will it take to raise it from 10oC to 27oC? _______________ E. 1 calorie = 1.163 x 10-6 kilowatts hours. How many kilowatt-hours will you need? ____________ F. How much will it cost to heat the pool from 50oF (10oC) to 80oF (27oC)? _______________ 16. For temperatures we see in Phoenix, a quick way to do an approximate conversion in your head for Fahrenheit to Celsius is to subtract 30, add 5, and then cut in half. For Celsius to Fahrenheit, double then add 25. Use this method for the following conversions. Exact is to subtract 32 and multiply by 1.8 52oF to oC: ______ 101oF to oC: ______ 70oF to oC: ______ 125oF to oC: ______ 37oC to oF: ______ 25oC to oF: ______ 10oC to oF: ______ 80oC to oF: ______

2. 18. Know what these prefixes mean 17. Be prepared to give the written name if the formula is given and vice versa. • mono- 1 • di- 2 • tri- 3 • tetra- 4 • penta- 5 • hexa- 6 • deca- 10 F2 Fluorine Cl2 Chlorine HF(g)Hydrogen Fluoride HCl(g)Hydrogen Chloride H2S Dihydrogen Sulfide HCN(g)Hydrogen cyanide NO Nitrogen monoxide NO3 Nitrogen trioxide N2O Dinitrogen monoxide Cl2O dichlorine monoxide NH3 Ammonia 19. Balance the following chemical equations Zn + FeCl2 Fe + ZnCl2 AlCl3 + Ca  CaCl2 + Al KClO3 KCl + O2 • NaCl + MgSO4 Na2SO4 + MgCl2 • CH3CHOH + O2 Na2SO4 + MgCl2 20. Original meaningsA. Atom is derived from “atomos,” what does that mean? indivisible B. “Electron” comes from the Greek word for amber. Why? When you rub amber with fur, amber pulls electrons off the fur giving it a static electrical charge, which gave it the ability to attract bits of grass, feathers, etc. C. Where does the word, “Molecule” come from? Mole means a mass. cule means small just like it does in the word, minuscule. So the word molecule means a smallmass. In chemistry it more specifically means 2 or more atoms bonded together. Even with a million atoms bonded together, it is still a very small mass.