The purpose of this experiment is to determine the boiling point of a liquid and the melting point of a solid. It is useful to know the melting point and boiling point of a substance to identify whether it is pure or not. I could learn how to determine the melting and boiling point of a substance through its temperature when the acetamide turned into a liquid and bubbles emerged from the capillary tube in the Isopropyl alcohol.…
Bergshoeff, E.A. & Meijerink, R. (2014). Melting Icecaps. Center for Theoretical Physics. University of Groningen. Retrieved from http://www.rug400.nl/rug400_2/rug_definitief.dev/sites/default/files/Melting%20Icecaps.pdf…
The plastic tablet that gets placed into the water causes the water to spin like a tornado. Then when dry ice is added the water starts to spin and create smoke, the color of the water goes from dark green to light green. There is probably a chemical in the dry ice that is reacting with the universal indicator which is causing the substance to change colors. Hydrochloric acid changes the color of the mixture and makes it green to yellow but when you add more hydrochloric acid then the first time the color becomes darker and eventually turn purple. The hydrochloric acid reacts with the solution and makes the colors change, when you add more than a certain amount the color becomes darker.…
In this experiment students were taking the slow melting point of their unknown compound. The tabulated list of all melting points of all students in the lab was created what was very helpful in finding a partner with the same organic solid based on the melting point data. Then with all possible matches students performed mixed melting point and the TLC experiment to find if they have the same retention factor (Rf). At the end of the lab students recorded the infrared spectrum (IR) of an organic compound by using FT-IR spectrometer. After the lab period a H NMR spectrum was given by TA.…
In this investigation we will see some chemical changes such as formation of gas, temperature changes, solid formed, color change occurs or a new odor produced and physical changes such as freezing, melting, dissolving evaporating.…
* Relevance to testable question- My experiment is relevant to my hypothesis because I directly comparing which freezes faster the container of hot war or the container of cold water.…
Hint: Use a Digits display and ‘Monitor Data’ in DataStudio or ‘Monitor’ in ScienceWorkshop to see the temperature of the ice.…
This experiment is to test the theory that the temperature of water affects the duration of time it takes to water to reach freezing?…
The goal of this project is to determine which added material will make ice melt fastest.…
This activity helped the children understand that temperature can affect the state of a substance as it showed that the water was liquid in room temperature but turned to solid ice in the colder temperature of the freezer which is important when following the national curriculum for science as it states that children should be taught to 'compare and group materials together, according to whether they are solids, liquids or gases and to observe that some materials change state when they are heated or cooled, and measure or research the temperature at which this happens in degrees Celsius (°C)'. I know that this worked because during the activity I asked the children around the room what the temperature needs to be like to melt the ice to water and water to ice, I asked which was the liquid and which was the solid and I what would happen to the water when we put it in the freezer.…
Explain, in your own words, why different elements produce different colors of light when heated. Each element has a unique electron configuration. When heated, the electrons are energized and this leads to a higher quantum state. The color depends on the distance you have and the original electron configuration.…
This essay discusses the mpemba effect and how it works. The definition of the word Mpemba is basically a question where you ask can hot water freeze faster than cold water it can be used as a science fair experiment and to solve other scientific questions.The key aspect discussed in this annotated bibliography is what the mpemba effect is what the history of the experiment is and how it is exactly used that is what it is about.…
In my experiment I will test to see what materials will change the ice to its freezing point depression state where it will be melting and there will be ice surrounded by water it just melted off. A few more scientific concepts that relate to this are the Freezing…
The energy levels of elements and of their atoms are different. When heated all the molecules jump around into wavelengths that we perceive as color.…
When you look perfectly at white clothes, all the colors are being absorbed by the electron in the atoms of the elements in the dye, causing the electrons to become “excited”, and emit all frequencies of light back to your eyes. All the energy of the photons red, orange, yellow, blue, indigo, and violet light is sent right back to the air around the white shirt. So none of the energy is absorbed by atoms and converted into kinetic energy of atoms. Temperature measures the kinetic energy of the atoms. So if there is no increase of kinetic energy this means that there will be no increase of temperature in the lighter colored clothes.…