My measurement in chemistry lab can be summed up in one sentence: I fail at estimating mass and volume. For example, during the measurement lab, I estimated a container of water as 30.1 grams. After we measured it, it was actually 73.2 grams, making my percentile of error 58.88%. Most of my percentiles of error were greater than 50%. I also estimated the volume of a small glass bottle as 12mL when it was actually 29mL. Fail. D< Luckily, my skills with using a scale are somewhat advanced.
Also, we left a test tube on the table. This is possibly dangerous because someone could knock it off the table, and the test tube would be shattered. Also, I learned not to pour liquid directly into the metal pan, as certain liquids could corrode the metal.
Friday, August 28, 2009
Thursday, August 20, 2009
A Penny for Your Thoughts
The first lab of the year, titled Penny for Your Thoughts, was a demonstration of alchemy, a process in which scientists attempted to turn base metals into gold.
∴ DESCRIBE WHAT YOU OBSERVED DURING THE EXPERIMENT?
During the experiment, the zinc first turned the pennies silver. The zinc and the copper then reacted in the flames of the bunsen burner, turning the pennies a gold color.
∴ WHAT DO YOU THINK HAPPENED TO TURN THE PENNY SILVER?
The penny turned silver because the penny was coated with pure zinc over a heated plate. The zinc, silver in color, bonded to the penny because of the heat.
WHAT DO YOU THINK HAPPENED TO TURN THE PENNY GOLD?
∴ The zinc and copper conducted electricity and a chemical reaction occured. Also, at one point during the experiment, we dropped the flaming hot penny to the ground, and it broke in half! I wonder if we could put the broken penny back into the fire, and mold it back to its original shape...?
∴ DO YOU THINK YOU MADE REAL GOLD?
Honestly, if we made real gold, the alchemists would go crazy! Plus, the value of gold would decrease rapidly if someone could REALLY turn an average base metal into gold. Plus, the inside of the penny was not gold, but silver instead. I believe that we created fool's gold.
∴ HOW COULD YOU FIND OUT?
Gold is very dense. This penny was the same density as its true form, copper.
∴ DESCRIBE WHAT YOU OBSERVED DURING THE EXPERIMENT?
During the experiment, the zinc first turned the pennies silver. The zinc and the copper then reacted in the flames of the bunsen burner, turning the pennies a gold color.
∴ WHAT DO YOU THINK HAPPENED TO TURN THE PENNY SILVER?
The penny turned silver because the penny was coated with pure zinc over a heated plate. The zinc, silver in color, bonded to the penny because of the heat.
WHAT DO YOU THINK HAPPENED TO TURN THE PENNY GOLD?
∴ The zinc and copper conducted electricity and a chemical reaction occured. Also, at one point during the experiment, we dropped the flaming hot penny to the ground, and it broke in half! I wonder if we could put the broken penny back into the fire, and mold it back to its original shape...?
∴ DO YOU THINK YOU MADE REAL GOLD?
Honestly, if we made real gold, the alchemists would go crazy! Plus, the value of gold would decrease rapidly if someone could REALLY turn an average base metal into gold. Plus, the inside of the penny was not gold, but silver instead. I believe that we created fool's gold.
∴ HOW COULD YOU FIND OUT?
Gold is very dense. This penny was the same density as its true form, copper.
Goals and Passions
I have a few things I would like to accomplish in life.
∴ Attend a four-year university. I do not know what I will major in yet.
∴ Act in Broadway in New York.
∴ Get hired for a successful job that makes a decent sum of cash.
My passions are:
∴ Drama / Acting
∴ Writing
∴ Traveling
I hope to accomplish and succeed in my goals and passions one day. :)
∴ Attend a four-year university. I do not know what I will major in yet.
∴ Act in Broadway in New York.
∴ Get hired for a successful job that makes a decent sum of cash.
My passions are:
∴ Drama / Acting
∴ Writing
∴ Traveling
I hope to accomplish and succeed in my goals and passions one day. :)
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