Did you know that the Celsius thermometer originally had 0 degrees as the boiling point of water and 100 degrees as the freezing point? (Astro) Until the death of the thermometer’s creator, this measure of temperature was backwards of what we use today. (Astro) This creator is the famous astronomer Anders Celsius. (FamSci) Anders Celsius was born in Uppsala, Sweden on November 27, 1701. (Bio) He was raised as a Lutheran. (FamSci) His father, Nils Celsius, was an astronomy professor at Uppsala University. (FamSci) His grandfather, Magnus Celsius, was a mathematician and professor. (Astro) Anders Spole, his other grandfather, was an astronomer and a professor. (Astro) From an early age, Celsius showed advanced skills in math. (FamSci)…
RESEARCH QUESTION: This experiment will analyse the changes in performance of a cane toad in abiotic factors, such as temperature. HYPOTHESIS: Cane Toads exposed to a warmer temperature will more times per minute compared to cane toads exposed to a cooler temperature. METHODS: 16 cane toads were kept at a constant temperature in an insulated container (two treatments: 8 in 25 degree Celsius and 8 in 15 degree Celsius temperate environments). Toads were then taken out, one by one, and placed…
The prediction for this experiment was: when the temperature hits 80 degrees Celsius, the catechol will be at its optimal absorbance. The alternate hypothesis tested for this following experiment was that there is a significant relationship between catechol and pH. In contrast, the null hypothesis states that there is no significant relationship between catechol and oxidase and pH. This hypothesis will be supported if the rate of catechol oxidase does not increase. The hypothesis was tested by…
Simple distillation was used for a liquid whose boiling points is 25 degrees Celsius over the other liquid, whereas fractional distillation is used for liquids with boiling points that are closer than 25 degrees Celsius apart. To obtain the highest percent ethanol, fraction distillation is proven to be the most effective. Because the 2 liquids have a boiling point difference of about 25 degrees Celsius, we used both simple and fractional distillation to remove the ethanol from the water.…
is to gather the best data possible from this experiment. If not done this way, it could result in data points either much higher or lower depending on the time it was tested and if it differed from trial to trial. Vessel Containing H2O2 The vessel being utilized for each trial will be a test tube so that fluctuating surface area will not negatively impact the experiment itself. Materials: 12 mL of 2.0 Molar Potassium Iodide 1, 10 mL graduated cylinder 60 mL of Hydrogen Peroxide 1 hot…
For instance, the county’s annual mean temperature will experience a relatively significant change within a short time period. According to the USGS (United States Geological Survey), the annual mean temperature for Howard County for the 1980-1999 base period was 10.07 degrees Celsius, while the potential annual mean temperature for the 2040-2049 period is 11.42 degrees Celsius (USGS). This future projection means that the annual mean temperature for Howard County may potentially increase by…
The levels are 7 degrees Celsius and 40 degrees Celsius. Dependent variable: The dependent variable is the brightness of the glow-stick that was measured in the length of how long the light reflected in inches. Controlled variables: Glass size, amount of water, type of glow-stick, size of glow-stick, the setting of the glow-stick, how long the glow-stick is placed in the water, how long the glow-stick is handled and shaked and cracked. Experimental Control Group: The standard of comparison is…
had melted, the temperature of the water as well as the water in beakers labeled ‘1’ and ‘2’ were recorded in celsius. While the temperatures were being recorded, another person within the group placed one crayfish within each beaker. Without disturbing the crustaceans, we waited for five minutes, until removing all crayfishes from the water. As soon as they were removed, we started the timer. When the crayfish calmed down or lowered their claws, it was immediately recorded. We repeated the…
up respiration in higher temperatures. Methods Preparation of Experiment The first step in preparing for this experiment is to make sure you have two respirometers. One has cotton inside to act as a control. The second respirometer is to be filled with mung bean seeds until it is approximately 2-3 cm from the top. Second step after adding the bean seeds and cotton make sure the cotton filled respirometer has a little moisture inside. To obtain this you will need to add few droplets of water on…
toluene, and one with an even mixture of the two. Along with this, there is also the goal of redistilling one of the fractions in order to further reduce impurities by leaving the fraction with only one of the two molecular compounds. Theory Boiling point and vapor pressure are related to one another in an inverse relationship—meaning that as boiling point increases, the vapor pressure decreases. Distillation refers to the process of separating a mixture of liquids based on the differences…