Chemistry
How to make invisible ink. This was the step by step process:
After the steps, I got a pipette to stir the solution for a few minutes, then I got a drop of the red liquid and put it on some paper. After a while, the ink started to disappear, it only left a moist trail behind. Today, I learned that this invisible ink lab connects to ocean acidification because we are learning about acidics and how they are used in our world. All acidic items are used in different ways, but all of them still do the same thing, they all break things down. After the lab, I discovered how invisible ink works. Invisible ink is acidic, meaning it can break down certain things, such as paper. We can tell by using the pH indicator. a tool use to tell if something is neutral, acidic, or basic Once the ink comes into contact with the paper, the ink starts to break down that area, making it weak. You then can’t see what was written anymore, meaning it turned invisible. Invisible ink is used for many possibilities, such as hiding secret messages. Invisible ink is a great way to keep things hidden from others, and showing people certain things you don’t want other people to figure out.
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Today in class, we learned how ocean acidification occurs, how it affects the ocean, and everything in it. But first, we have to know how Co2(or Carbon Dioxide) is made. Co2 is usually created by man and/or machine. Co2 is made when we burn things or use fire, and then gets released into the atmosphere, which later goes into the sea.( such as wood, gasoline, etc). After a while, the Co2 reacts with the saltwater and makes it acidic, which slowly decreases the pH levels. Right now, the pH levels are 8, which is almost normal between acidic and basic, a 25% increase of acidic over two centuries. If this continues, it will increase more and more, which will soon cause a major danger in global warming. It does just affect us humans, it also affects sea life as life. The Co2 levels affects baby fish by shortening their lifespans and causing deformities, such as fullen grown fish are smaller than other normal size fish. Also, it breaks down the minerals coral need to keep a rigid structure. Since this is happening, the population of sea life will start shortening within years, and eventually there won’t be anymore fish or coral living in the sea.
Today in class, we learned what our earth is made of, how the earth’s landscapes were made, and how to make rocks.
First, I learned that the earth is made up of several different layers, with their own materials. The crust is made out of solidified mantle, which is made out a thick liquid called silicate(which is a salt molecule that contains silicon and oxygen). The outer core is made up of liquid iron and nickel. Also, that’s the place where we get all the material we need to make coins and other metallic things. And finally, the inner core is also made of iron and nickel, but it is a very hard solid. Another interesting fact I learned today was that all of the earth’s landscapes were made from earth currents. Earth currents are currents under the earth that go around the earth and mix hot elements with cold elements, which eventually go up in the ground to create mountains. Finally, I learned how to make my own rocks. First I got carbon and water, and then I combined them together into a flask. Next, I then put some piece of calcium chlorate( which is a salt of chloric acid) inside, and waited for the magic to happen. A few minutes later, rocks were sprouting up from the pieces of calcium chlorate. Bubbles were being made in the water, going up and up, while making a very strange veiny track behind it. Today, we learned two new things in class. First, we learned how to make our own floating lanterns. We used thin pieces of balsa wood, five birthday candles, and a garbage bag. We first melted the candles onto the wood, then we taped the wood to each other to the bag. Finally, we lit the candles and waited for the smoke to pile up together to fill the bag up, so it would float. You could see the bag was expanding and inflating within minutes, which we then let go and let it float. We also learned three different properties of matter. The first one was density, which is the measurement of an object using mass and volume. Density is used to tell if boats or other things are able to float in water, or just sink to the bottom. For an example: if you put a toy boat and a brick in a bathtub to see which one would float, the boat would easily stay up because it is lighter than water. Other one was buoyancy, which is an easier way to tell if certain solids, liquids, and even gases can float in water or not. For an example: a boat floating in water. And finally pressure, which is the force applied by different objects. Pressure is used when you or something apply force to other object. For an example: if you want to cut a banana with a knife, you would apply a small amount of force. Different phases of matter Today, I learned about pressure, temperature, phase changes, and got to use dry ice for the very first time. Pressure and temperature is always used in these phase changes to help the molecules go from one formation to another. Pressure is use to freeze water and gas, and temperature is use to heat solids and water. These are the six different phase changes That I learned:
Today, my teacher give me some dry ice. Dry ice is frozen carbon dioxide, which helps things stay or become frozen. The dry ice was so cold, it kind of burnt my finger. To make dry ice, you must put liquid carbon dioxide inside a tank, then you must lower pressure levels until the liquid forms into a solid. What do you think happened when we burned our hydrogen balloons?
I think the hydrogen in the balloon burn quicker which then blew up the balloon. When the flame reached the balloon, the hydrogen reacted and exploded in different directions. As the balloon ripped, the hydrogen pushed apart the balloon which made it explode bigger. Light is traveling energy bouncing of one point to another.
Electromagnetic spectrum: A wavelength of radiation extends. Combustion: The heat of something burning, such as burning wood or paper.
Combustion, or burning, is a rapid, self-sustaining chemical reaction that releases a significant amount of heat. Three things are needed must normally be present so combustion can occur: a fuel, an oxidizer, and an ignition stimulus. Examples of Combustion:
How easily can things burn? Can combustion occur randomly? How do you describe what "science" is?
Science is studying things such as earth, space, etc; with facts, test, and observation. Science is used to evolve people’s minds to further our understanding of the world, or a certain way to approach the universe. It gives us ideas of what we can do with certain materials and make something out of the same materials to help us overcome obstacles, it also makes you ask question to further understand materials. Science gave us things such as cars, planes, solar powered generators, etc that helped us with our everyday lifes. What is a Hypothesis, and why would you make one? A Hypothesis is a scientific guess with all the notes and facts, and the reason you would make one is because you don't know what the outcome is so you use all your notes to determine what will happen. |
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November 2016
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