Sejin+P+sp2013

=**Two Types of Experiments Extension**=

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Loren and I experimented on which type paper makes the paper airplane fly for the most amount of time; copy paper, lined paper, and construction paper. This is a comparison experiment because it compares what type of paper. The control is the copy paper because many people use copy paper when making paper airplanes. The independent variable is the type of paper and the dependent variable is the time the paper airplane takes to reach the ground. First we made 9 of the same paper airplane; three of each type of paper. Then we timed each type of paper airplane using a timer. Then we found the average for each of the types of papers. The lined paper stayed in the air the longest; it stayed in the air an average of 2.54 seconds. The copy paper stayed in the sir for 1.46 seconds and the construction paper stayed in the air for 0.83 seconds. ======

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Loren and I then experimented if the distance the rubber band flies changes when the rubber band is launched at different angles. This is a relationship experiment because the experiment is about seeing a relationship between the angle the rubber band is launched and the distance the rubber band goes. The control is 30 degrees because it is the median angle of the three angles we’re going to test. The independent variable is the angle the rubber bands are launched and the dependent variable is the distance the rubber band goes. First we launched three rubber bands at a 20 degree angle and found the average for the distance the rubber bands go. Then we launched three rubber bands at a 30 degree angle and found the average distance the rubber bands went. Finally we found the average distance three rubber bands go at the angle of 40 degrees. The angle of 20 degrees makes the rubber bands go and average of 583.5 cm, 30 degrees makes the rubber bands go and average of 437 cm, and the angle of 40 degrees makes the rubber bands go an average of 563.33 cm. ======

= = =**ISP Reflection**=

The problem for the first experiment was the difference between the distances of a squeeze rocket launched when carbon dioxide was in the bulb and just air that humans usually breathe. When air was put in the bulb, it went 285 centimeters. When the bulb was filled with carbon dioxide, it went 216.6 cm. The problem for the second experiment was the difference between the distances of a squeeze rocket launched when was in the bulb and just air that humans usually breathe. When smoke was put inside the bulb, the rocket went 247.3 centimeters and when just air was put in the bulb, the rocket went 285 centimeters. The experiment went smoothly without many problems though when I realized that some results were exactly what was not expected of from me, it was pretty surprising. It was a cool experience of knowing I just right now might have done what was new though many people might have known what would happen, I still did something new to the world and that is cool. Also, I get all the credit instead getting partial credit.

=Job Reflection= A chemist is someone that relates to my project and if I go on with science, I might become a chemist. When someone thinks about chemist experimenting, they usually think of liquid chemicals. There are also gas chemicals though. Chemicals can include all types of gases in fact. I was experimenting with therefore, chemicals that are gases and seeing which one would launch a squeeze rocket the best. In that way, I was experimenting in the study of chemistry. They could perform experiments with acids, and lights, improve equipment or everyday households, or analyze properties of things.On a typical chemists work day, he'd get in his lab and he might do some experiments with a lab partner with a base and maybe different types of rock or other things related to chemistry stuff. == =My Model: The I pad= My First Model of an I pad without Research

The I pad works a lot like a computer. It has its home screen, internet, music, and games like a computer. But the I pad is touch screen, has a camera facing both front and back, and an app store. It uses the 1 and 0 code to make it work like a computer. Still, it is very unique in its own way.



My New Model of an I pad with Research The difference between the two pictures are quite big. I had the basic facts about an I pad but I didn't have the details. In the first model, I was missing the speakers and the picture was more 2 D. The picture was also missing a back. Other than that, I put a lot detail in to the picture after I did some research. I included a back camera, a label about the battery, and a speaker in the new model. I also added a fact about the resolution and which camera, back or front, was better.

=Matter= Our group tested to see if a rock is matter. To test this, we needed a rock, graduate cylinder, triple beam balance, and 60 ml of water . First, we find the mass of the rock using a triple beam balance. Then, we find the volume of the rock by putting the rock in the 60 ml of water that's in the cylinder. Then we subtract 60 from the amount in the cylinder that's found. If the rock has both mass and volume, it is matter. As a result, the rock has a mass of 25.5 grams and a volume of 10 cm cubed, proving it matter.

Our group also tested to see if water was matter. To test this, we needed a graduate cylinder, a triple beam balance, and 50 ml of water . First, we find the mass of the cylinder using a triple beam balance. Then subtract that mass with the mass of 50 ml of water in the cylinder. Then, we find the volume of the water putting it in the cylinder. If the water has both mass and volume, it is matter. As a result, the water has a mass of 50 grams and a volume of 50 ml, proving it matter. Our group finally tested to see if air is matter. To test this, we needed cubic centimeter blocks, a triple beam balance, air, and a balloon. First, we find the mass of the balloon and bucket using a triple beam balance. Then subtract that mass of the balloon and bucket with the blown balloon. Then, we find the volume of the balloon by estimating using the cubic centimeter. If air has both mass and volume, it is matter. As a result, air has a mass of 0.1 grams and a volume of 3056 cm cubed, proving it matter. =Salt Crystals = My partner and I made a model of a salt crystal. Table salt's formula NaCl, also known as Sodium chloride. This means that there's an equal amount of Sodium as chloride. Most salt is made up of ionic compounds. These ions form into a crystalline formation, each positive ion with a certain amount of negative ions, vice versa. Otherwise, salts are crystals. A crystal is a solid that forms by a repeated pattern of elements. Salt is considered a compound because it is made up of different elements. It has an ionic bond between these two elements. There are many different types of salt other than table salt. There are lead diacetrate, potassium bitartrate, magnesium sulfate, monosodium glutamate, ammonium carbonate, and much more. =Separation Challenge (separating salt and sand to measure each of their masses)= First, the sand and table salt that is in a beaker is mixed into water until the salt dissolves. Then, put the salt water and sand through a filter paper and into a beaker. Put the sand left over in to a beaker using water and a scoopula. This way, the moist sand is in one beaker and the salt water in another. Then, boil the contents in both beakers using a hotplate so that all the water evaporates in both beakers. This should take about 45 minutes. Then, put the salt and beaker on the triple beam balance and measure the their mass. Then, measure the mass of the beaker and subtract its mass from the salt and beaker's mass. Do the same with the sand. The salt weighed 1.9 grams and the sand weighed 2.1 grams. Everything worked very well though the way the salt looks after it had been boiled is different. It looks less grainy and more clumped together. The experiment though would've improved if we didn't use the scoopula because the water worked much better when taking the sand off the filter paper.