Kinetics Vs. Room Temperature Blocks

If the temperature in the apparatus increases too quickly, it’s difficult to record to exact temperature at which the first drop of liquid falls and then again when the mixture is completely liquid. This would result in the wrong melting point range being recorded. Additionally, experiment three heavily relied on the results from experiment two. Failing to extract all the aspirin from the organic solution in experiment two would result in more impurities in the unknown component. Thus, lowering and broadening the melting point

melting produced a drop in pipette readings. For each gram of ice that melted, the volume change

Substances A and B have an appearance of a white solid like. Substances A and B were put into a test tube and on the Bunsen burner. As a result, B melted faster than A. A was slow to melt. The reason why B melted faster than A is because it has a lower boiling point than substance A which made it melt faster. It also shows that A needs more energy than B to be broken down.

Taking ice cream outside on a warm day and then on a cold to see if warm weather affects the melting of ice cream would be the experimental approach.

2. Some of the outside variables that could have affected our outcomes for the experiment are the ambient temperature and how quickly the groups took the hot dogs out of the ice water to measure their temperatures. The ambient temperature was 28 degrees Celsius, the coldest temperatures of the hot dogs ranged from 35 to 37 degrees Celsius, so for the groups that measured their hot dogs’ temperature quicker, they gave their hot dogs a head start in the warming process. For groups that were not as quick with their measurements, their hot dogs starting warming up at a later time, so by the time the experiment was over, their temperatures would have been lower than the groups that measured quickly. We did not control these outside variables because we did not increase or decrease the room temperature by turning on the AC.

Maria’s hypothesis for this experiment is that the cold water will freeze faster, she thinks this is correct because the hot water molecules move faster than the cold water molecules, causing the hot water to take longer to freeze.

The objective of this experiment is to test the melting point of ice against different variables. I will use a control of ice against air and test this next to ice in water, sugar on ice, salt on ice and Baking Soda on ice. By measuring the melting time of each element on an ice cube I will be able to tell which element affects ice’s melting properties at what rate.

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

The incorrect chemistry is that Olaf was in the water. This is incorrect because ice cannot be placed in warm water because it will acquire heat and turn from solid state to a liquid state. The heat is always transmitted from the hot body to the cold body. The hot body loses heat and the cold body acquires heat. Ice melts at 32 degrees Fahrenheit (0 degrees Celsius) During the transformation process, the temperature remains constant at 32 degrees Fahrenheit (0 degrees Celsius) until all ice is turned into water.

The “Coolest” Experiment Ever is a science fair project to determine whether or not mints have a cooling effect or is it just a sensation. The predicted outcome of the experiment is that if we add mints to a hot glass of water, it will cool down more than the glass without mints. The reason being is because mints contain menthol, a substance that melts just above room temperature. It triggers a cold-sensitive TRPM8 receptor which produces a familiar cooling effect. The basic procedures of this experiment is to fill two glasses with hot water, and add five mints every five minutes. After every trial, check the temperature using a thermometer. Record all the observations you have made with a critical eye. The predicted outcome of the experiment

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 activity 17.3.2 we weighed out 150g of chilled water and 150g of pat dried ice and we put it into a styrofoam cup along with an immersion heater, and a temperature sensor. We recorded the data on LoggerPro and as the experiment is running, we continuously stirred the mixture; We ran this experiment for roughly 16 minutes; We saw that the ice was melting and once it was completely melted, the water started to get warmer and boil, we also observed steam from the water. Analyzing our data, we compared the initial mass 300g to the final mass 257.5g, there was some loss due to evaporating during the boiling process. This experiment supports the concept because we can see that when the immersion heater was melting the ice, there was a horizontal line near 0°C; When the ice was changing phase to liquid, we observed no temperature changes.

Out of the 4 containers I think the cardboard container will melt the ice cream in 30 minutes because the heat will go through the ice cream faster, I believe it is made of a thinner material and that is why I think it is a weaker container

After that I waited until the entire ice cube melted. This took about two hours or so. Now that the ice had all melted and absorbed into the paper towel I could see that the ice cube had either broke through the paper towel, absorbed fully into the paper towel or leaked though in some spots. When I was finished looking over what had happened, I wrote down the results and everything all of my observations.

3. When heat flows from a warm object in contact with a cool object, do both objects undergo the same amount of temperature change?