Thermodynamic temperature

Argument Driven Inquiry Design a Cold Pack / Hot Pack A chemical change is to alter the identity of a substance. Properties of these chemical changes include color change, gas formation, temperature change, precipitate formation, odor, and change in acidity. In the hot and cold pack experiment we found it to be a chemical reaction An exothermic reaction is when the substance releases heat energy. An endothermic reaction is when the substance absorbs heat energy. In our experiment we created a…

science fair project involves soda bubbles and temperature. I chose this project because I’m interested in the viscosity(a chemical in soda) that is part of a soda/liquid, and how the viscosity is affected by the temperature of the liquid. I am also interested in bubbles specifically their length of time, so it would be interesting to see how the length of time is affected by temperature. The question that I am going to answer is, how does the temperature of soda affect the length of time of…

The resistance that is encountered is dependent on the body tissue that is traversed by the electrical current. Generally, tissues with high fluid electrolyte concentrations will conduct electricity the best. Bone is the most resistant tissue to electrical flow. Skin impedes electrical current, but resistance is dependent on the skin's thickness and moisture. Wet skin can reduce the contact resistance of the body. The degree of electricity-induced injury is also determined by which tissues are…

Introduction The goal of this experiment was to determine atomic weight of Kandimonium and the relative number of M&M’s in Kandimonium. Kandimonim is composed of three isotopes: Skittles, M&M’s, and Sweet Tarts, and the ratio of Sweet Tarts to Skittles is 27:18. The relative number of M&M’s and the atomic mass were determined by weighing each of the different Isotopes and calculating their average masses for further calculations. Calculations The following calculations were used to…

w/ water mass and the initial mass of the beaker was subtracted to obtain the grams of water in the beaker. Using the temperature of the water, the density could be found, allowing for the theoretical volume of the water to be found. The percent error could be found once we had the theoretical volume compared to the measured volume. The water trails were similar in temperature, thus the density were similar throughout the experiment. The burette trails had an average percent error of -0.466%…

dioxide. The temperatures of everything are very strange. The water cannot be cold when trying the experiment because it will not heat up the dry ice and create carbon dioxide gasses but it will probably freeze the water. Dry ice is temperatures below freezing point and the water has to at least be at room temperature to work. When the water is hot the dry ice evaporates off quicker. Dry ice is at -109.3 degrees F or -78.5 degrees C. The temperature of the water we used was room temperature…

Some of them are reverse osmosis, forward osmosis, low temperature distillation, membrane distillation, pressure retarded osmosis, biomimetic and grapheme membrane, and solar desalination. In the mid 1900’s, commonly used techniques of desalination involved distillation and evaporation. Solar desalination relies…

heat from the system may have transferred to our hands as we held the top of the calorimeter down. This would cool down the system decreasing the final temperature recorded. The substance also could have reached equilibrium in the midst of the trials run and began to move the reaction in the reverse direction, which would decrease the temperatures recorded would be effected by the reverse reaction. The calorimeter used in lab was not a completely closed system because the lid had two holes in…

4.8 How do the Hydropower Plants Work? Hydropower is the combination of head and flow. The Head is water pressure created by the difference in elevation between the water intake and turbine, expressed as a distance (feet or meters) or as pressure (pounds per square inch). Similarly, flow is the quantity of water, expressed as volume per second or minute (gallons per minute, cubic feet per second). In a typical hydropower system, water is diverted from a stream into a pipeline, where it is…

that when the balls are cold the gas molecules inside tend to get tired and not have so much energy to help the balls bounce. It’s their job to act as a spring to help the balls bounce, but in order for the ball to bounce it has to be the right temperature, meaning the degree of hotness or coldness of a body or environment. In this case it has to be warm outside because that’s when the gas molecules inside are excited and they have a lot of energy. A gas molecule is the simplest structural unit…