Kate

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This is my Voki. This assignment talks and introduces what is on my digital portfolios. It also shows the projects I am working on in my science class. The Voki is where you can make a character say anything and look like anything you like. This is also to help you learn everything that is going on my portfolio.

Science is mysterious in the fact that when scientists try to find solutions to their problems they may not always find the answer or what they are looking for so they leave it a mystery.

In the real world scientists are trying to find cures to some serious sicknesses such as cancer and the common cold. They are aslo studying how the body works, and about plants, and animals, and learning more and more about them each day.

In science class we do labs to learn about chemicals. We also learn how to use some computer tools such as Wikispaces, animoto, Moodle, and Google Docs. We also work in the book and take notes on what we are learning. Also we take tests and quizzes.

The purpose of this site is to learn about science on our classsmates wiki's because we may not always have the answer but they might. Its also one of the internet learning tools we use.

This is my lab safety poster that i did on a powerpoint then uploaded. I used a powerpoint because I thought this was the easiest and fastest tool to use to teach people about lab safety. I also thought this was a fun learning tool that people can use and read and learn from. Lab Safety Powerpoint: media type="custom" key="10536896"

This is my Secret Life of a Scientist poster. For this I used a powerpoint slide then uploaded it. I used a powerpoint slide because I could use my own pictures and had control of what i wanted it to look like. Secret Life of a Scientist:



History of Measurement

The first recorded measurement system was known to be brought by the ancient Egyptians in 1400 B.C. They made the first weighing system, and figured out how to measure length. They worked the weighing system by using a balance and a pointer. To measure length they used a cubit which is about the distance between your elbow and the tip of your middlle finger. In 640 B.C the merchants that lived in the Middle East created a different way to measure a unit of weight. They used this unit to measure their gold, silver, and metal, they used a talent and a mina to measure these things. In 200 B.C., the Chinese emperor, Shih Huang Ti, set standards for length, width, and volume. Something they also created that we use today is decimal notation. In 789 A.D. Charlamagne made a standard of weight called Karlspfund, which is also known as Charlamagne's pound. 89 years later the English used an acre to measure their land. They defined an acre as the amount of land that two oxen could plow in one day. In 1714 A.D Gabriel Fahrenheit invented the theromemeter, which we also use today to measure temperature. Later Gabriels last name was used in a unit of temperature. In the end, in France in 1983 A.D., a distance light travels in a fraction of a second is defiened as the meter. That is why the history of measurement is important to us today and how it has effected our lives.

Reflection on Viscosity Lab

The purpose od this lab was to show how slow or fast something moves in a certain liquid on a certain tempersture. This lab hepled me learn about how heat makes a thick substance turn into a liquid; almost like water.

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Above you'll see a picture of a lab I did in class today. It covered pressure, temperature, and volume and shoed how they are related. In this lab I learned that when you increase the temperature the volume and pressure increases to so the molecules move fast or vise versa. Also when you add more molecules the pressure and the volume increase making the molecules ecplode out of the container their in.

First Data taken: Data Taken with Probe: **Introduction:** Today in class we did a lab on melting ice. For this lab we recorded the time of how long the ice melted in room temperature water and hot water. Above you'll see the data we recorded on this lab
 * = Cup 1 ||= 24 degrees Celsius ||= 5 minutes ||= 13 degrees Celsius ||
 * = Cup 2 ||= 41 degrees Celsius ||= 2:57 minutes ||= 26 degrees Celsius ||
 * = Cup 3 ||= 19:50 degrees Celsius ||= 330 seconds ||= 14.9 degrees Celsius ||
 * = Cup 4 ||= 49.4 degrees Celsius ||= 88 seconds ||= 37.5 degrees Celsius ||

**Purpose:** The purpose of this lab was to see how fast ice melted in a certain temperature of water and compare the two.

**Hypotheses:** My hypothesis was that the higher the temperature, the faster the speed the ice would melt

**Materials:** 2 Plastic Cups (filled with about 200 mL each) Thermometer Stopwatch or Timer 2 Stirring rods (preferably plastic) Ice cubes (2 cm on each side) Warm water (about 40-45 degrees Celsius) Water at room temperature

**Procedure:** 1). In your notebook, make a data table 2). Fill a cup halfway with warm water. Fill a second cup to the same depth with water at room temperature 3). Record the exact temperature of the water in each cup 4). Obtain two ice cubes that are close to the same size as possible 5). Place one piece of ice into each cup. Begin timing the stopwatch. Gently stir each cup with a stirring rod until the ice melts 6). When one of the ice cubes is completely melted, record the time and tempertature of the water in the cup 7). Wait for the other ice cube to melt. Record its melting time and the water temperature

**Data and Observations:** I observed doing this lab, how the ice cube melted in water and how fast it would melt in a different temperature. I also observed that as an ice cube melts in water it decreases the temp. in water. Last thing I learned is that an ice cue melts faster in a higher temp.

**Results:** In this experiment we had to take four different trials. One reason we did this is that if we messed up on our data we could see which one was more acurate and calculate that. To measure and take the temperature of the water we used a thermometer and a probe. In cup one, as you see above, we used room temperature water which decreased by about eleven degrees and it took about 5 minutes to melt. In cup two, which was filled with hot water, was at 41 degrees and after we put the ice cube in it decreased to 26 degrees at two minutes and 57 seconds to melt which beat the first time by far. In the third cup, which was again roop temperature, we measured with a probe and got somewhere close to our previous results for the themometer. The cups that relly changed the most were the heated cups and they had the highest temp and the hightest speed. **Conclusions:** In the end, my hypothesis was correct. My hypothesis stated that the higher the temp of water the higher the ice cube will melt. As you can see above that came true. I found that there are many things you can do to make the ice melt faster. One thing you can do is stirr the water. Another thing you can do is heat up the water more which will result in the ice cube melting faster. The reason for this is because when you heat the water the molecules move around fast bouncing off the sides which made the ice melt faster. **Discussion:** In this lab although we had a good time doing it, we had some difficulties. For example we put the ice cube in the hot water, not knowing how fast it was going to melt, we werent paying attention and by the time we looked at it the ice cube was gone so we had to re-do it again.That was mostly our only problems and we had fun doing this experiment.



=== Above you'll see a picture of a internet activity we had done a couple of days ago. In this simulation you have to add protons, nuetrons, and electons to create an atom. To do this you have to look at the element you want to create then look at the atomic number and add that many protons and electons. To figure out how many neutrons you add, you have to subtract the atomic number from the atomic mass and that will give you how ever many neutrons. While doing this simulation a learned that each ring, or shell, has a certain letter, and a certain amount of elecrons could be on each of the shells. Something that was hard for me was adding all the protins and neutrons to find the right element I was lookinf for. ===

This is my propertis of metal lab:

__Properties of Metal__

The periodic table consists of mostly metals. A periodic table shows all elements, their numbers and more. All of the elements are divided into separate groups. All metals are found on the left side of the zigzag. On the other side, the right side, of the zigzag are matalloids and nonmetals. There are ways to classify an element based on its physical properties. Those physical properties might be; malleability, which can be pounded into shape, shininess, hardness, and ductility, which can be pulled or drawn. Most metals are good conductors because they transmit heat and electricity easily. Also some metals can be magnetic. Metals in a group or family have similar physical properties and change as you move along the table. As you can see, metals are different in many ways. Some are similar and some are different.Also some metals have the same physical properties and are all on the periodic table.

Here is my wordle on metals



Alka Seltzer Lab: Chemical Reactions ====The purpose of the lab was to prove how the reaction of the alka seltzer would reacts in different temperatures of water. A chemical reaction is a process in which substances undergo chemical change, forming new substances with different properties. The evidence that is seen in order to tell if it is a chemical reaction is when the color changed and when it started bubbling. My hypothesis was that the tablet will disolve 7 times faster in hot water then it would in 0 degrees celcius. In the lab we did 3 trials with hot water, warm water, and cold water. In trial one with the room temperature the temperature before was 18 degrees celcius and it dissolved in 1:11 seconds. In the second trial which was with the hot tap water was 69.7 degrees celcius dissolved in 22.5 seconds. The third trial which was with the ice water was .8 degrees celcius disolved in 2:48 seconds. The evidence that I saw in each trial was that it sizzled, it changed color and it was orange. At a temperature of 10 degrees celcius it would take 1:45 seconds for one Alka-Seltzer tablet to react with 8oz. of water. If the temperature is doubles from 20 degrees to 40 degrees celcius the time for the rate of reaction====

.[[image:2012portfolios/Alka-Seltzer.jpg width="536" height="296" caption="Data from the Lab on Chemical Reactions"]]
Voice Thread (type a reflection of what you learned) media type="custom" key="12493914" Popplet

This is my popplet and summary on the chemical compound of pentane: What I learned from pentane is that is is a covalent bond. Also I learned that it is explosive and used in other common things such as petrolium jelly and solvents. One problem I had with this project is not finding the history of pentane and I had to do some digging to find what type of bond it was. One good thing about this is that we learned how to use new tools like popplet and I learned something new about a chemical compound that I never heard of.

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Conclusion for Solutions and Mixtures Lab:

My hypothesis was incorrect. My hypothesis was that the solids would mix better in the water than the liquids will. The correct answer is neither because they will mix/dissolve the same. Water is formed by a covalent bond in which electrons are shared unequally, therefore it is polar. Molecules react in water by separating. The observations I see that indicated they dissolved is that you cant see that substance no longer and it doesnt appear to show. This happens because when you put a substance in water, it becomes a clump then the water molecules attach themselves to the substance making it break apart showing it mixed together.

Marble Race:media type="custom" key="16183490"

media type="custom" key="18010780" This is a new tool we used in class called scratch. It was confusing at first but then it got easier to understand. It taught us how to input our voices or move and dress our characters. This was a very fun activity to do and is a useful tool I would love to use again.

Scratch Reflection: Scratch is an internet tool that you can download onto your computer. You can make games, or projects, and much more. You can create or design whatever you want on it. You can create different characters and make them talk and walk around. For my scratch project I created an interview with Sir Isaac Newton. Its almost like a talk show where Scratch (the cat) talks/interviews Newton and asks him questions. I want people to see the creation I have made and for them to learn a little more about Newton and what he has done. This is the first time I did scratch and I want people to see that it is east to use and to create. If I was to create another project I would probably make a game. I would make a game so others can play it. I find it interesting because it would be fun to create and entertain others. Since everyone likes playing games I think it would be a great idea to make one. Scratch was a great and fun project to do and i hope to use it again.

media type="custom" key="18622154" Dipity Reflection: In class we used a new tool called dipity. Dipity is an online activity where you can make an interactive timeline. Dipity has some problems to it like being really slow. Its very time consuming and takes a very long time. Its a great tool to make a quick timeline. We made a timeline of the ways that different scientists viewed the solar system. The scientists we used were; Kepler, Brahe, Galileo, and Copernicus. If this website was faster I think it would be easier and more fun to use. I would like to use this tool again.

Bio Cube Reflection: Today in class we used a new tool called bio cube. Bio cube is a way to organize or write information on people, places, or things. I wrote on Galileo Galilei. This bio cube walked me through what I had to write. One of the cubes told me to list his date of birth and where he lived. Also it asked me what was the importance of Galileo. The tool was easy to use but it had some problems. For one thing you had a limitation on how much you can write on one cube. When you finished you had a print out of your cube and you can print it and form it into a cube and use it for information. This was a great tool to use and I would definately use it again.

Link to Peyton and my Storybird that we made on our own constellation: []