Pennies get dull over time because thecopperin the pennies slowly reacts with air to form copper oxide. Pure copper metal is bright and shiny, but the oxide is dull and greenish. When you place the pennies in the salt and vinegar solution, the acetic acid from the vinegar dissolves the c...
, including: making a coin bottle-burper; blowing a balloon into a bottle; racing a soap-propelled boat; watching colours creep up a celery stalk; exploding your own Vinegar Volcano; sending your friends secret messages with invisible inks; and the mysterious multiplying pennies experiment. ...
Copper easily binds with oxygen, creating the dirty-looking copper oxide layer on pennies. For this chemistry project, gather a collection of dull pennies. In a non-metal bowl, create a solution of water and vinegar. Create another solution with water and baking soda. In each bowl, place ha...
Another way to go a step further on this project is to repeat the experiment using 10 pennies from each year of the particular decade in which you noticed a significant change in the average mass of the pennies, compared to the control group. You would, for instance, determine the mass of...
An additional experiment was done to find the specific gravity of a sampling of liquids. The purpose of the experiment was to provide a better understanding of density and to be able to extrapolate unknowns based upon these calculations. The experiments yielded data in keeping with Kinetic-...
It would be a good idea to fill in the charts illustrated in the next section, “Keeping Track of Your Experiment,” as you proceed. You'll need to make a chart for each group of pennies to be able to record all your data. You'll end up with four charts....
The purpose of this experiment is to determine the mass of many pennies within a single mint year and over a range of years. Measurements lab purpose The purpose of this experiment is to practice with the laboratory equipment while taking mass and volume measurements. ...
Purpose- The purpose of this experiment was to determine the mass relationships between the reactants and the products of a chemical reaction from NaHCO3 and NaCl. Hypothesis- I predict that in this experiment the Sodium Chloride will not get along with the Sodium Carbonate. ...
Read this experiment. Lesson 13 Level 1-4 Today, create sound. Create sound that vibrates through a solid (bang something). Create sound that vibrates through a liquid (fill a glass with water and tap the glass). Create sound that vibrates through the air (blow over the top of a bott...
"Synthesis and Characterization of Aldol Condensation Products from Unknown Aldehydes and Ketones: An Inquiry-Based Experiment in the Undergraduate Laboratory," by Nicholas G. Angelo, Laura K. Henchey, Adam J. Waxman, Donald Wink, James W. Canary, and Paramjit S. Arora,* J. Chem. Educ., ...