Four



Group Four: Eric + Jordan + Noah This is Jordan and Eric's but not Noah's because all he does is sit around and look at Mississippi State Football (WOOF WOOF GO DAWGS) even though he is the one that found every shred of info about the experiment .All Eric's fool self did was put it into a powerpoint so if you wanna get on to somebody dont just be getting mad at me because while i was getting all the information about the experiment he was looking up college basketball websites so ..............

it is cool dont screw it up. Have a nice day. THEY DARKER THAN US, WOOF!!









WAKE! GO Danville Hawks & Priceville Bulldogs!! /\/\iCr0 Re\/0L\/eR owns jooo haxorz by th3 l33tn3zz of ph33r






 * OBJECTIVE**

Show students how an alloy is made.


 * MATERIALS**
 * 20 mL of 6 M NaOH
 * 0.1 g zinc dust
 * evaporating dish
 * hot plate
 * tongs
 * 200 mL beaker of water
 * penny
 * Bunsen burner
 * Note:** NaOH should be handled with great care. It is corrosive and can burn skin. Zinc dust should not be inhaled. Safety goggles should be worn the entire time. This lab should be performed under a hood.

> > >
 * PROCEDURE**
 * 1) Place zinc dust in evaporating dish.
 * 2) Add 20 mL of NaOH solution to the dish, on top of the zinc.
 * 3) Set hot plate to medium heat and place the evaporating dish on top.
 * 4) Heat for 5 minutes. Do not boil. When dish is hot, place a penny in it. Heat for two minutes or until the penny is coated and becomes silver in appearance.
 * 1) Remove the penny from the dish with tongs and drop into water. When cool, wipe the penny clean with a cloth to remove excess zinc.
 * 2) Using tongs, hold the penny in the flame of a Bunsen burner and gently heat. The penny should turn "gold" (brass). (Do not overheat the penny.)
 * 3) Dip the penny in the beaker of water and cool to touch.


 * WHAT HAPPENED?**

In Step 4, the penny was coated with zinc atoms. In Step 6, when the penny was heated, the copper atoms of the penny and the zinc atoms coating the penny mixed and turned gold in color, but actually formed the alloy brass.