Kara

Welcome to my digital Portfolio! =This is all the work that I have been working on since the beginning of the school year. Some of the activities that are included are the What is Science Lab?, the Lab Safety Video, and the Secret Life of a Scientist. Those are what we have been working on! Enjoy: =

====**Here is a voki that we did to introduce our portfolios. I chose my character because my cat looks like that and I explained what the purpose of the Lab Safety Video was. The reason that we do these is so that other students in other grades can learn from ours and then when they are in eighth grade they can do what we do and learn from our mistakes. This is a good tool because it gives a animation that bring your attention to it. **====

**Voki:**
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====**Here is a project that we did on the first week of school. This is what we called the What is science? lab. We had to think about what we thought science was. Secondly what the scientist in the real world do and why that is important. Thirdly we had to explain what we do in science class. Lastly we have to explain why this sight is one of the sources that we use in science class and why that plays an important role in science.** ====


 * What is Science?**
 * Science is investigating items and other substances that may be useful in an experiment. Also problem solving like you didnt get a result you can ask to do it again or ask someone that was in the group with you what they got and you put it in your own words. Also science is studying and learning the different things that are in the earth and what kind of animals there are.


 * In the real word scientist................**
 * Are problem solvers that try and find ways to advance in what they know. Also they really like to help people out and find cures for cancer and other diseases that have not found a cure yet for. Scientist go and they experiment on different things so that they can come up with like for medicines what side effects could be and for chemicals what will happen if they mix chemicals and what would hurt your body in some way.


 * In Science Class we...................**
 * Do experiments to find out what would happen if we took action and put two substances together or if we stirred something then what would happen. We also take technology to help us learn and also we can research all different topics and be able to take all the info and make something out of it. There are a lot of activities that we do in science and when we finish a lab if we do one then we fill out a paper so that we know what came out right and what came out wrong and then we can explain the reason that it turned out that way.


 * The Purpose of this sight is..........**
 * So that other students from other schools can see what we are doing and they would be able to learn from us and then they could add that to their knowledge of the topic. We can expand our learning just by looking at others work and seeing what they thought about the topic. Also we save paper and it is easier for Mrs. Delucia to correct cause she doesn't have to take home a stack of papers.



====**The reason that we did a lab safety video was so that you can be safe. When you watch this video it explains how to be safe when you are using chemicals. Also you need to be careful when using lab equipment because if you do something wrong then you could get hurt. There are very important rules and there are less important rules but they need to be followed or you or someone else could get seriously injured. It is important to always follow rules when doing labs and using equipment.** ====

= **Lab Safety:** = media type="custom" key="10618120" **Here is a link just in case you arent able to play the video:** [|http://animoto.com/play/OJ12aKn50JekPOK115lVUg#]

====**The reason that we did this activity was to show that there are some secrets to all of us. People need to know about us so that they know a little bit about what we like and like to do and all the other things that people thought were important. I have many secrets but I only shared the ones that I thought were important. Below I have a little picture of what I like to do and what the secrets are that I have to share with everyone!** ====

Secret Life of a Lion:

**History of measurement:**
(Important dates are highlighted)

In 1400 BC the Egyptian people developed an instrument which was know as the simple balance which included a pointer. They would measure in cubits which was from their elbow to middle finger. Using the cubits wasn't that accurate because they all had different lengths of arms to pointer fingers. In 640 BC the Lydian people developed a talent and minas. The talent weighed 25 kilograms and the minas weighed 500 grams. In 200 BC China's emperor set standards for weight, length, and volume and the Chinese people were the first to use decimal notation. In700 AD England came up with the word acre for area and they defined it as amount of land that 2 oxen could plow in 1 day. In 789 AD the standard unit of length was the length of Charlemagne's foot and the standard unit of weight was Charlemagne's pounds also known as Karlspfund. In 1714 Ad Gabrielle Fahrenheit developed the the thermometer which measured temperature and how it relies on mercury to go up with heat. Lastly in 1983 AD International Bureau of weight and measurement defined the meter as the distance light travels in a fraction of a second.

Viscosity Lab: 

Today in class we did a viscosity lab. How this simulation help me learn was that we discovered what took longer to sink to the bottom was greater viscosity. I learned that if you added heat then the balls would sink to the bottom quicker. A solid motion was tight, regular pattern, and the particles moved a lot slower. The liquid motion was not neat, close together, but even though they were tight they could move past one another. The gas particle motion moved rapidly and the there was more spaces between each one.

Gas Simulaton media type="custom" key="10921952"

Today in class we did a simulation on properties of gas. Some of the things that I learned were that when temperature decreases the volume and pressure decrease. The reason for this is because the cool will begin to freeze the particles and then they start to slow down and they almost completely stop when the temperature get to 0 degrees.

Problem: How does the temperature of the surroundings affect the rate at which ice melts?

Hypothesis: I think that the ice cube will melt quicker in the warmer water.

Materials: thermometer 2 plastic cups, 100 mL each ice cubes warm water 40 degrees Celsius room temperature water

Procedures: 1. Make a data table 2. Fill cup 1 with room temperature water 3. Measure what the temperature was in the cup before adding the ice cube 4. Drop and ice cube in the room temperature 5. Record how long and at what temperature it was at the end 6. Now do it with warm water 7. Do steps 2-5 but with warm water.

Data Table: Temperature (Celsius) || Time to melt (seconds) || Final Temperature (Celsius) || 39 seconds 21 milliseconds || 14 degrees Celsius || Cup 1- Room temperature water (thermometer) Cup 2- Warm water (thermometer) Temperature Celsius || Time to melt (seconds) || Final Temperature (Celsius) || Cup 3- Room temperature water (probe) Cup 4- Warm water (probe)
 * Cup || Beginning
 * 1 || 20 degrees Celsius || 6 minutes
 * 1 || 20 degrees Celsius || 6 minutes
 * 2 || 40 degrees Celsius || 1 minute 50 seconds 85 milliseconds || 23 degrees Celsius ||
 * 2 || 40 degrees Celsius || 1 minute 50 seconds 85 milliseconds || 23 degrees Celsius ||
 * Cup || Beginning
 * 3 || 24.9 || 300+ || 12.9 ||
 * 4 || 42.3 || 131 || 24.9 ||
 * 4 || 42.3 || 131 || 24.9 ||
 * 4 || 42.3 || 131 || 24.9 ||

Results: The ice cubes melted in the warmer water quicker. It melted around 5 minutes quicker. Then for the final temperature it was warmer in the warmer substance and then in the cooler it dropped lower than in the warmer water. There was around an 11 degrees difference.

Conclusion: My hypothesis was correct that the ice cube would melt in the warmer substance quicker. How I can prove that my hypothesis was correct is that if you look at the data table it shows that the one that was in the room temperature water melted at almost 7 minutes and the one in the warm water melted at almost 2 minutes. That is almost a 5 minute difference. Then the temperature was different at the beginning and the end of the experiment. There was a 6 degree difference with the room temperature one from beginning and then end. Then the there was a 17 degree difference in the warm water from beginning to end.

Discussion: I think that some things did get calculated wrong with the thermometer because we are holding it and heat could have traveled. Also that was with the probe we could have had heat travel from our hands while holding it and also we may have started and stopped the stop watch to soon or too late. One thing is that when we used the probes we started the calculations really late so we think the data may be a little off. You could test it over and over and then you would start getting more accurate answers.

Here is helium on the Bohr model. Last week in class we went on a website and we found some other things out about the elements on the periodic table. For me this was a good way to learn because it explains a lot about the elements. This website also provides a lot of help like you seen in the picture above they help you balance out an atom such as helium. This was a good exercise that really makes you think and learn something. This website was very easy to work with and the link on moodle went right to the place that we needed to be when we opened it up.

__**Properties of Metal Lab**__

**Pre-Lab:**
The physical properties of metal are hardness, shininess, metalbility, and ductility.

**Purpose:**
What affects does the solution have on the steel wool?

**Hypothesis:**
I think that the steel wool will become more shiny and the steel wool will become softer.

**Materials:**
20 mL chlorine bleach 100 mL distilled vinegar 100 mL beaker 250 mL beaker paper towels rubber band coffee filter small pieces of steel wool safety goggles wide mouth jar or beaker water forceps lab coat magnet

**Procedures:**
1. Pour 125 mL of water into a 250 mL beaker. Add 10 mL of distilled vinegar and 20 mL of chlorine bleach to the water. 2. Take a small piece of steel wool and hold it in one hand. With the other hand, hold the magnet near the wool. Record what happens. 3. Drop the steel wool into the water-vinegar-bleach solution. Observe what happens. 4. Record the changes every 4 minutes for 24 minutes. 5. While the steel wool is reacting in the beaker, prepare a device for filtering. Place the filter paper into the mouth of the wide- mouth beaker. Use the rubber band to attach the filter to the top of the jar so that the filter hangs into the jar. 6. After your final observation of the water-vinegar-bleach solution, slowly pour the steel wool and solution into the filter paper. Let the liquid drain through. Add a little water to the beaker to rinse it and pour this into the filter as well. Use forceps to pick up the steel wool, hold it over the filter, and rinse it off with a small amount of water. Then, set the steel wool aside. 7. What all the water has drained through the filter, carefully remove it from the top of the jar. Place the filter on several thicknesses of paper towels. Once the material in the filter is dry, observe it carefully. Hold the magnet near the material and record what happens.

**Data:**

 * Minutes || What Happened ||
 * 4 minutes || turned a brown color ||
 * 8 minutes || disintegrating, amber color ||
 * 12 minutes || corrosion, chunky, dark amber color ||

**Post Lab Questions:**
1.Did the solution have any affect on the steel wool? What did it do? Explain your answer. a. Yes the solution did have an effect on the steel wool and that was that the solution turned colors and the steel wool started to disintegrate. 2. What can you infer about the type of material produced in the reaction? a. I think that the reaction was because there was such harsh chemicals that's why the solution started turning colors of the steel wool. 3. Was this what you thought would happen? Why or why not? a. No this is completely different then what I thought was going to happen. I thought that the steel wool was going to be shiny and it would become harder but it did the exact opposite.

** Results: **
What happened in the experiment was that the solution changed colors. Also the longer that the steel wool was in the solution the more the color got darker. Another observation was that you started to see that the steel wool started to disintegrate in the solution. You could see chunks and when asked Mrs. DeLucia said that was the steel wool disintegrating. Also in the procedures it explains to put a magnet up to the steel wool and what happen was it was like a magnet and stuck to the magnet that we had in the other hand.

**Conclusion:**
This proves that steel wool is magnetic and that when you put it in a solution that it starts to disintegrate. Also the longer that it is in the solution it starts to become less magnetic. I learned a lot in this experiment. No my hypothesis was totally wrong and that proves that you dont know everything and that you are learning something. I thought that the solution would stay the same color and the steel wool would be shiny and harder, but I was completely wrong. It disintegrated and so that definitely isn't shiny or harder.

** Discussion: **
Some possible sources of error were that Natasha she poked the steel wool and so the steel wool may have disintegrated more quickly than it should have. Another source of error that may be is that we added the bleach first and then we added the vinegar so that may have had a different reaction. I think that the importance of this experiment was to show that steel wool can be magnetic and that when something is put in bleach and vinegar it can disintegrate and then the solution can change colors.

Metal Lab Paragraph

====The purpose of the lab was to prove how if you add heat then the reaction will happen quicker. 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 original prediction was that was when using hot water out of the tap, the rate of reaction would be 10 times faster than at 0 degrees celcius. In the lab we did 3 trials which were hot water, warm water, and cold water. In trial one with the room temperature the temperature before was 17.1 degrees celcius and it dissolved in 67 seconds. In the second trial which was with the hot tap water was 88.6 degrees celcius dissolved in 20 seconds. The third trial which was with the ice water was 3.1 degrees celcius disolved in 158 seconds. The evidence that I saw in each expirience was that it would fizzle and make a cool noise and the color changed and it would smell like oranges.====



Voice Thread (type a reflection of what you did) media type="custom" key="12495028"

=__**Popplet:**__=

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Summary~
=== In science Mrs. Delucia assigned us a compound. the one that she assigned me was sulfuric acid. We created a popplet and then we made a model of the compound. The popplet was a brand new internet tool that we used so we had to learn how to save, share, and even embed onto these wikispaces. This is a good way for us to learn because it is fun and creative. I organized mine into colors so that I knew what went to what and that helped it be a lot less confusing. I found this to be a very useful tool and it was interesting. ===

Bonding lab

Summary of bonding activity~

In class yesterday we did a bonding activity. This was a good activity to learn how to create a bond. This was a fun activity but I didnt really like how we had to draw the illustration because that took to much time. I learned that the subscript is how many of that element is in the bond.

Conclusion: I made a hypothesis that the solids would be more soluble. I thought that my hypothesis was correct because in my experiment most all of the solids were more soluble because they dissolved quicker. Looking into the other people in the class they had that they both were equal but I think that the solids were more soluble. Water is a polar bond. The molecules separate when they are in the water. They way that I knew that the substance was dissolved is that you could no longer see the molecules in the water. Another way is like with the sugar the water became clear and you could no longer see the crystals. Some ways that probably could have been an issue that we didnt have exactly 5 mg of the substance so that could have been a problem.

FOTTOBABBLE : media type="custom" key="16200988"

Scratch media type="custom" key="18161926"

__**Scratch reflection:**__
The reason that we used this tool was so that we learned how to use some programming skills. I think that this was a little bit hard but if you read the directions very carefully then it would work out well. I would recommend this tool to students if they are able to read the directions that we did it would be easy. Also we learned about Sir Isaac Newton which was a little boring. He did not have a very interesting life from what I thought! This was cool to learn the programming skills and it would be fun if we got to choose who we wanted to learn about. I really was interested in the one that was the singer that was singing someone that I used to know song.

DIPITY: media type="custom" key="18597872"Dipity is a timeline website. It is a virtual way to make a timeline on someones life. I think that this was an useful way to learn about peoples lives and also getting to know how to use this tool. I would recommend this to others if they are willing to be patient. This website ran very slowly and it was a pain. Some of the astronomers were very boring to learn about but I just finished and got it over with. I think that people should look at the pictures and the information about these people.

Bio Cube: This was a cool tool to use in my opinion. The bio cube helps you learn about peoples life just like the dipity. This tools teaches you how to make a cube of information. I would recommend this tool for sure for students because when you are using the internet to look up the person it is very easy. I think that this is a good tool!!! I would say to look at the interesting facts about Kepler because I chose to look up Kepler. Kepler was born December 27, 1571 and died November 13, 1650. He was born in Weir de Stadt, Holy Roman Empire which is currently Germany. He died in Regensburg which is also currently in Germany. He lived a good life and died of a short illness.