What iot means to “do science”

What it means to do science is that I have puzzle pieces if the world together. Chemistry is basically the same idea except with much smaller means of puzzle pieces. I look at the basic particles of earth and watch how they turn into much larger and tangible objects. One way I do this is through labs. With labs, I get to see the particles at work, like the stoichimotry of gases lab, shows how the conservation of atoms has an effect on chemical reaction. Another way is the textbook. The textbook porvides chances to practice what I have learned and apply my knowldege that I have accumulated over the year into one problem. The lectures my teacher gives are great because I get everything explanied to me and then the labs and textbook give me a chance to practice and learn the lesson I have been taught.Discussions give me a chance to hear other people’s thoughts about the chapter, and their questions are often my own. My own undertsnading of chemistry has come with time and a lot of practice. I have to review my notes and hear a lecture before I get comfortable with a chapter. Over time, I have learned that chemistry is just small parts and pieces of the universe and all I have to do is fit them together. Chemistry has taught me that everything is connected. Even silly putty and ice cream are chemistry. For example, in the silly putty lab I made silly putty by cross linking a polymer then observing the chemical reaction. The ice cream lab demonstrated colligative properties and made me familiar with the different phases and what can effect them. Howver, the very first lab was the observation lab. That familiarized me with skills that I would use for the rest of the year. The chromatography lab was a lab that showed a method of analyzing complez mixtures. Over all, chemistry was a very challenging course, because it broke everything in the world down to the smallest units and involved math with abstract numbers. But I learned a lot about problem solving and hard work. I would have to review my notes every night in oder to understand the homework that was given, and even thought I am not the chemistry scholar of the class I have learned problem solving skills that I will need in the future. The lectures were the best part of the class because I got the lesson explained to me opposed to learning it on my own. Learning the units, such as moles or kilograms were hard because they were so abstarct. But I learned to work through them. Chemistry was a great class and I will take its lessons with me through high school and the rest of my schooling career.

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Soap making Lab

Ingredients:

50 mL of olive oil

  • 50 and 10 mL graduated cylinders to measure oils
  • 400 mL beaker

45 mL of coconut oil

10 mL of castor or avocado oil

50 mL of Crisco

Water:  38 mL (if using avocado oil) or 51 mL (if using castor oil)

  • 50 mL graduated cylinder to measure water

NaOH:  19 g (if using avocado oil) or 21 g (if using castor oil)

1 g sugar

essential oil (optional)

NaCl (if necessary)

  • Weigh boat for massing NaOH
  • 250 mL erlenmeyer flask for mixing water and lye
  • Glass rod for stirring
  • Stirring magnet and magnetic stirring plate (if available)
  • Handheld emulsifier (if available)

First, put on safety gear. Then pour water into a 250 mL beaker. Mass the  NaOH in a weigh boat and then carefully tip the weigh boat so that the crystals fall into the beaker. Take care to look at the temperature and then add one gram of sugar. Combine the oils and pour the oils into a 400 mL beaker. The oils and the lye need to be below 130 degres, then trickle lye into the oils, stirring vigorously for a couple of minutes until thick. Once cemented, pour contents into a mold. Once this is done, clean up lab station.

I used to think… But now I think…

When it comes to the gas laws, I used to think that solids, liquids and gases had nothing to do with pressure or volume. I knew that temperature played a role in the phase changes though. But now I think that pressure and volume have everything to do with the phases. Also, I always used Fahrenheit as a temperature, but now I know kelvin is what I am supposed to useImage 

Independence and Critical Thinking

When there is a change in volume of a gas then there will also be a change in tempature. In other words, if the volume increases then so will the temperature. When it comes to pressure and volume of a gas, they act inversley, so if volume increases, then pressure decreases. In the balloon experiment, the tempature in the balloon increased and so did the volume. In my life, tempature has a large role. When I go for a run, i choose the workout depending on the temperature. I don’t want to pass out so if it is too hot out I won’t do a speed workout. Likewise if it is too cold out I will keep my runs short to decrease the chance of getting a pulled muscle.

Prussian Blue

I thought this reading was really cool. It was interesting to learn that Prussian blue could be used to treat high levels of radioactivity. The complex structure of the pigment was idficult to follow and understand because there was no viusal.  It was explained well that absorbed and unabsorbed wavelengths. Overall Prussion blue was a good and informative reading

Balancing Equations Poem

Chemical equations clarify what happens in chemical reactions.
They let us look into the bonds of different elements,
and even allow us to predict possible outcomes:
decomposition, combustion.The subscript holds
the secret of how many atoms are in
the element;when dissocation
occurs the the ions
separate;the
compound is
broken,
but the
insoluble
compounds go on. Precipitates.
Chemical equations claify what happens in chemical reactions.
The products exist only due to the reactants.
Single displacement.
Double displacement.
Synthesis is a universe of possiblities in the most basic forms of matter.

Law of Conservation of Mass Lab Abstract

Alena D’Olimpio

Class G

1/14/13

Dates for Lab: 1/8-1/9

From this lab I learned that through a chemical reaction the mass of the object does not change.

The law of conservation of mass states that no detectable gain or loss in mass occurs in chemical reactions. So that means the object of the experiment could change from a liquid to a gas but the mass stays the same even through a substance change. The mass balances we used are limited because they coudld be tampered with easy whether it be an open window that lets in a breeze or not being careful with how you set the balance. For activity one when the solutions mixed there properties did not mix and a reaction took place.  The change did not affect the mass. For activity two when the vinegar and baking soda combined the liquid turned fizzy and the bag filled with air. No the mass did not change after this reaction. I know this because I massed both bag both before and after the reaction took place. In activity three the wool became a sort of blazing blue when it was warmed and then became a burned black. The mass before the burning was 50.35 but the mass after was 50.35. This leaves a .15 mass difference.

Lab Safety

Every student has a responsibility to keep them and thier classmates safe. In a chemistry lab it is extra important to keep that attitude because we deal with dangerous chemicals, and it is excpected that we are mature enough to deal with them. If there is misconduct it puts everyone in danger and it is not fair for that student to get off when health is threatened.  We, as students, are being entrusted with chemicals, and supplies that has to be treated with caution. If a person witness’s someone fooling around, they need to tell the teacher immediatly because playing with the chemicals and chemistry equipment poses a danger to the student and their surroundings. It is up to the bystanders of the situation to hold the misbehaving student accountable for his/her actions. If they do not, the bystanders are also responsible for the danger that situation poses.