Lab Report 01 Pennies Popcorn Seperation

# Lab Report 01 Pennies Popcorn Seperation - Jabiz Behzadpour...

This preview shows pages 1–4. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Jabiz Behzadpour Lab Section 414 7:30 AM Mekala Pansalawatta 9/6/2007 Pennies Popcorn Separation Introduction: Pennies are probably the most common coin in the United States. In this experiment we will be making observations about the penny regarding mass, volume, and density. The pennies that were made before the year 1982 have a different composition than those made after 1982, and that difference may yield in varying densities. The transformation of a popcorn kernel into the food that you eat is quite an interesting one. The kernel is filled with water, and when heated in the microwave the water will build pressure and burst, forcing the kernel open. The amount of water loss of a popcorn kernel may actually be measured in a laboratory setting. Separating mixtures may be hard or easy depending on the mixture. If given marbles and rice to separate, one could easily pull out the marbles by hand and the remainder would be all the rice. However, with sand and salt the solution is more complicated than that, though still possible. In this lab we will separate popcorn, iron, salt, and sand. Experiment: Required Equipment 4 pennies before 1982 4 pennies after 1982 5 popcorn kernels Sand Iron Fillings Salt Bunsen burner with stand Procedure Obtain four pennies which were minted before 1982 and four pennies minted after 1982. Individually weight each penny on an electronic balance to obtain its mass up to four decimal places. Average the mass of the four pennies that were made before 1982 and the four that were made after 1982 separately. After that get a graduated cylinder and fill it up with water, and mark the initial volume of water. Dump the four pennies that are older than 1982 in the water and mark the end volume of the cylinder. Take the difference and divide by four to obtain the volume of the average penny minted before 1982. Repeat the steps above to obtain the average volume for pennies made after 1982 also. The average density may now be calculated by dividing mass by volume. Compare the density of pennies before and after 1982 to see if there is a difference. Measure five popcorn kernels on the electronic balance. Take the average of all five masses to come up with a general number. Get a Bunsen burner and set it up on a ring stand with wire gauze on top of it. Set a beaker filled with sand on top of the gauze and bury one popcorn kernel in the sand. Turn on the Bunsen burner and heat the beaker until the kernel pops, then immediately turn off the burner and take out the popcorn using tongs. Repeat this pops, then immediately turn off the burner and take out the popcorn using tongs....
View Full Document

{[ snackBarMessage ]}

### Page1 / 7

Lab Report 01 Pennies Popcorn Seperation - Jabiz Behzadpour...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online