Copper Steel Or Brass Produces The Most Thermal Energy

The dependent variable in the experiment was the temperature and energy absorbed by the water.

The main goal of this experiment was to observe series of reactions that convert a piece of copper metal, via several different copper-containing compounds, back into its original elemental form. The data collected was the striking color changes along with their relevant chemical equations. The data was collected while keeping a close eye on the experiment the whole time. The data recorded was used to see the different changes involved with a piece of copper metal. The copper was weighed and heated multiple times throughout the experiment

5- Place 3 ½ oz. container of White chocolate into boiling pot as it is heating up

In this experiment a basketball was used because of its size and was used in a controlled environment. For two of the out of the three trials in the experiment a freezer and refrigerator were used to cool the ball the temperatures. For one of the trials the ball was heated with a heater, the temperature for the heated ball was 111. The basketball was measured by a measuring tape that went by inches. The data chart found that the heated ball was the one that bounced the highest and the freezing ball was the lowest temperature bounce. The three variables of this experiment was independent, dependent, and control. The independent was the temperature of the basketball. The dependent was the height of the bounce. Finally, the control was the floor surface, the height of the drop and the basketball room temperature. The tools that the experiment needed was the thermometer to check the temperature of

The problem of the experiment is: which metal out of galvanized iron, copper, stainless steel, and steel will rust the least in acetic acid? The hypothesis is: If Copper is placed in the acetic acid then it will be the material that loses the least mass when mass lost is related to material submerged. The independent variable is what type of metal is being used. The dependent variable is the percent of mass lost while submerged in the vinegar. The controls include the amount of vinegar per sample, the same person pouring the vinegar, the same scale taking measurements, and the same amount of time submerged in the vinegar. The standard of comparison is how much the mild steel corrodes because that is the metal currently used to make the gas tanks at gas stations. The experiment designed to test this starts with cleaning of five different samples of copper, iron, mild steel, and stainless steel. After that, the mass of each sample is measured using an electronic balance. Then, each sample is put in a cup, and submerged in 200 mL of vinegar. They are then left in the vinegar for about 24 hours. Next, after the 24 hour period, each sample is then taken out, cleaned, and measured again. This process is repeated one more time. After the experiment is done, you calculate the percent of each sample lost by day, and find the average of those. Then, the metals are compared by percent of mass lost to find the most corrosion resistant.

The independent variable for this experiment is the temperature of the water bath, as this is what factor is changing throughout the practical. The temperatures will be ranging from 10°C to 50°C in ten degree increments. This will allow for the effect of temperature on the rate of reaction to be

Next are the methods that where done in this experiment. The materials used where: A digital Thermometer, human

(Graph is attached on a separate piece of paper) During this experiment, there were five sections of a temperature-gradient tank that were all different temperature ranges; 2-7 degrees Celsius, 7-12 degrees Celsius, 12-17 degrees Celsius, 17-22 degrees Celsius, and 22-27 degrees Celsius. The fish who were originally removed from the same stock tank (22 degrees Celsius) were then placed in the temperature-gradient tank. The experiment’s purpose was to observe which temperature of water the fish prefered best and gravitated towards. After studying the results from the experiment, there is a definite difference between sections; the temperatures that ranged in the middle C section (12-17 degrees Celsius) were more preferable to the fish because

In Part B of the experiment, when observing heat change within a calorimeter, analyzing the heat change within a reaction would be called the enthalpy of the reaction, since an acid and base neutralize causing the creation of heat and provides a change as time passes. There will be a total of two quantitative measurements in this experiment one of which is the specific heat of the metal, the specific heat the metal is just how much energy that is required in order for one gram of the substance to increase by one degree Celsius. Similar to enthalpy of the reaction, enthalpy of neutralization is when the energy released per mole of water formed in an acid-base

In an article called “Heat Transfer by conduction” by Mike Brown, it states “Thermal energy in the vibrating particles or molecules is passed on to nearby particles in a process called conduction”. This explains to us the process of conduction in which it relates to our design because when we insert the thermometer into the warm water, our goal is to keep the water warm with our cup so that once the thermometer makes DIRECT contact with the warm water, it will heat up the thermometer and give us an exact temperature.

Dependent Variable: Rate of hand squeezes on the hand strengthener. Number of times the strengthener is squeezed (50) / time it takes to complete squeezes (seconds)

The hypothesis is that the black can will radiate the least heat meaning that the temperature within the can will stay the highest, while the exterior temperature will be the lowest, with the silver can radiating the most heat and the white can being somewhere in between.

A demonstrate is that when two objects of the same material are put together , the object with the higher temperature cools while the cooler object becomes warmer

The first experiment was used to determine which design was the most fuel efficient. It was important to make this experiment to figure out which stove could be lit for a longer of time period if the same amount of fuel was used. If a person found themselves in an emergency they might need to ration their resources and so they must have a very efficient stove that will stay lit for a long time. Based on the information gathered from the first experiment, it was estimated that stove #1 would be the most efficient design so it would also probably heat things up the faster than stove #2. The second experiment was made to find out which stove design would boil water the fastest. This would be an important experiment to carry out in case there is a need to cook or heat up a liquid during an emergency. The third experiment was made to find out which could cook an egg the

If we heat soil and water for 10 min and let them cool for 10 min, the soil will heat rapidly and cool slowly, because dark colors absorb a lot of heat. When we heated the materials up, the temperature difference for soil was 6.1 degrees Celsius. The temperature difference for water was 2.4 degrees Celsius. When we let the materials cool for 10 min, the difference in temperature for soil was 3.4 degrees Celsius. The difference in temperature for the water was 0.9 degrees Celsius. My hypothesis was partially correct. While the temperature of the soil increased quickly, the temperature of the soil cooled cooled quicker than the water.