To make the results of the experiment valid four variables to take into account are if the freezer is the same temperature for both tests, the water is the same water just different temperatures, the ice cube trays are the same size, and finally both trays are in the freezer for the same amount of time.
The aim of the experiment was to find out how changing the mass effects the rise of the temperature of water.
Hypothesis: If the sugar in the ice cubes will cause the ice cubes to melt quicker than the ones without it. Equipment: 1 tablespoon (20 g) White Sugar 280 ml of water (this needed to be divided in half for the different types of ice cubes, so 140 ml for each ice tray and 10 ml for each cube) 2 ice trays (with 14 cube slots) Freezer 2 Plates Measuring jug Stopwatch
In order to measure the heats of reactions, add the reactants into the calorimeter and measure the difference between the initial and final temperature. The temperature difference helps us calculate the heat released or absorbed by the reaction. The equation for calorimetry is q=mc(ΔT). ΔT is the temperature change, m is the mass, c is the specific heat capacity of the solution, and q is the heat transfer. Given that the experiment is operated under constant pressure in the lab, the temperature change is due to the enthalpy of the reaction, therefore the heat of the reaction can be calculated.
In my project, I will do an experiment to find out which material makes ice melt the fastest while the temperature of the room will remain the same. This research is important because if you are short on ice and you need it you can figure out which material will make your ice last the longest if you have no insulation. For example, if you were in the desert and had a cooler you would know what to put in your cooler to make your ice last the longest. I will be testing with three different materials: steel, wood, and fabric. My hypothesis is if the steel retains the ice's cold temperature then it will take the longest for the ice to melt. My goal is to help cooler companies improve their coolers by outlining them with whatever material helps
A scale conversion is calculated and the measurements from each thermometer are examined to see how closely correlated they are. _M___
The first part of the lab began by one lab member adding 10.0 mL of DI water to a test tube while another lab member obtained a beaker full of ice and salt. After both these steps were complete the test tube was put in the beaker full of ice. Immediately following the test tube be being placed in the beaker, a temperature probe was inserted into the test tube. The initial temperature was recorded and after the temperature was recorded in 30 second increments. Once the water exhibited supercooling and then remained consistent at .1 °C for 3 readings it was determined that the water had froze and formed crystals. Evidence that crystals formed allowed for it to be confirmed that the water actually hit freezing point at .0
The purpose of this experiment is to measure the reaction of the ice melting when exposed to another solid element. The environment is a kitchen with a stable temperature and testing space. Repeating the tests three times will provide different data which will then be averaged for each element. For each test, calculate the percentage of the ice cube melted by [mass of melt water/initial mass of ice cube] x 100.
Abstract: This experiment introduced the student to lab techniques and measurements. It started with measuring length. An example of this would be the length of a nickel, which is 2cm. The next part of the experiment was measuring temperature. I found that water boils around 95ºC at 6600ft. Ice also has a significant effect on the temperature of water from the tap. Ice dropped the temperature about 15ºC. Volumetric measurements were the basis of the 3rd part of the experiment. It was displayed during this experiment that a pipet holds about 4mL and that there are approximately 27 drops/mL from a short stem pipet. Part 4 introduced the student to measuring
For this lab, we brought a empty soda can to school to show how pressure and temperature can affect the structure of the can. To begin the experiment, we needed a empty soda can, water and ice in a small plastic tub, and a hot plate. First, we added about a tablespoon of water to the empty soda can. Second, we put the soda can on the hot plate and waited until the water was brought to a boil. Then we used beaker tongs to carry the hot soda can and flipped it over into the container of water and ice. Once the can touched the water, the can made a loud crushing sound and the can crippled inward.
The Lab One was done on Laboratory Techniques and Measurements. The first experiment with my Lab partner; we got opportunity to experiment how to conduct measurements in length by using metric conversion. We started in cm units and changed into mm by x10, and moving decimal point x1 to right. To find in meter we moved from cm to meter two decimal points to the left or double check our self divided by 100 and all records in data table 1. The second experiment was to measure temperature of how cold and hot tap water can be by using thermometer in Celsius units. From this experiment, gained knowledge that tab water doesn’t boil to 100 Celsius related to containing different
Third, we could try to keep the temperature of the water the same throughout the whole experiment, when we put 100°C water into a beaker, the temperature would quickly drop down maybe 10°C in a minute or so. So if we had a machine that would keep a consistent temperature the whole time, we could get a
Dry ice is simply the frozen form of the common element known as carbon dioxide, which human beings exhale during respiration and which is essential to the health of plants all around the world. Dry ice is very cold, with an average temperature of minus 109.3 degrees Fahrenheit. Moreover, it is an unusual solid because it changes directly to a gas and not a liquid during a "melting" process known as sublimation. When dry ice is put in water it accelerates the sublimation process, creating clouds of fog that fill up your dry ice bubble until the pressure becomes too much and the bubble explodes, spilling fog over the edge of the bowl. Dry ice is sometimes used as part of theater productions and performances to create a dense foggy effect.
To achieve this, the final value from each thermocouple was set to be equal to the warm water bath temperature (370C), and the initial reading was set equal to the ice water bath temperature. Thus, for each thermocouple an equation was obtained using the two points to convert voltage readings to temperature. An example of the calibration for one of the thermocouples is shown in Appendix II.