The Similarities Between The Gesture And Measure Of Catalase

The more acidic a substance is the less oxygen it will produce when going through a chemical reaction. During the Lab “How Do Changes in pH Levels Affect Enzymes Activity”, the researcher conducted an experiment to test the effects that an acidic, neutral, and a base substance will have when combine it with hydrogen peroxide. The data table shows that HCL (acidic substance) barley produced any oxygen at all when it was combining with Hydrogen Peroxide. The pH level for HCL was 2.5; this level indicates that the substance was very acidic. When the H2O and NaOH were tested they produced more bubbles than HCL. NaoH produced a little more bubbles than HCL. The pH that NaoH produced was a 9, which is a base. H2O produced more bubbles than both substances;

Observations: During the experiment, bubbles were present from the water in the electric water baths that were set at temperatures of 50 degrees Celsius and 60 degrees Celsius. This is because the water has passed its boiling point and began to boil. The glucose powder had a white color. The yeast powder had a mild yellow color. When the glucose solution was mixed with water, it gave a clear color. When glucose solution was mixed with the yeast, it produced a murky yellow color. Bubbles also arose when CO2 was being lost in the experiment under each desired temperature.

Heather Hansen’s work entitled Emptied Gestures was an experimental project focused on kinetic drawing in which she combined visual art and dance. They are artworks made from charcoals drawn on large paper canvases and she uses her own body to create the illustration she has in her head. In an article by Hannah Edwards, Hansen says, “Emptied Gestures is an experiment in kinetic drawing. In this series, I am searching for ways to download my movement directly onto paper, emptying gestures from one form to another and creating something new in the process” (Edwards).

The reaction you will be investigating is the reaction that occurs when an Alka-Seltzer tablet is placed into a given amount of water. Alka-Seltzer is an over-the-counter antacid and pain relief medication that is dissolved in water before it is ingested. Each tablet contains aspirin (acetylsalicylic acid), citric acid, and sodium bicarbonate. As the tablet dissolves in water, the bicarbonate ions in the tablet react with the hydrogen ions from the acids that are also contained in the tablet. The carbon dioxide gas produced by the reaction is what causes the bubbling that can be observed.

What would it mean if a known catalase positive bacteria did not produce bubbles after the addition of H2O2? It would mean that a different strain of bacteria was used that doesn’t react to hydrogen peroxide.

The moment an Alka-Seltzer tablet hits water, it begins to fizz. These tablets are over-the-counter antacids and pain relief medications that contain aspirin, sodium bicarbonate, and citric acid. The fizzing is a result of a reaction occurring where carbon dioxide (in the form of bubbles), water, and sodium acetate is formed. The fizzing and carbon dioxide bubbles are a result of the sodium bicarbonate splitting and reacting with the citric acid. In this experiment we are determining the percent by mass of sodium bicarbonate (NaHCO3) in Alka-Seltzer tablets and exploring the relationship between amounts of reactants and products.

The objective of the experiment was to observe different reactions with different chemicals. The experiments emphasized on the chemical changes occurring in acids and bases as well as color changes and bubble formations. The experiments allowed for a better understanding of the undergoing chemical changes in mixtures. Some mixtures instantly changed colors while others were transparent or foggy. Some mixtures produced thick color that created solids called precipitates. Mixtures KI + Pb(NO3)2 and NaOH + AgNO3 both produce noticeable precipitates after a while. It was interesting to see the different acidic and base reactions like the fuchsia color formation in NaOH + phenolphthalein.

If an air bubble was present in the buret during titration, it would affect the calculated molarity of the HCl. The air bubble takes up volume in the buret, making the volume of NaOH in the buret artificially high. If the bubble came out during titration, then the volume of the NaOH added would appear to be higher than what it actually was, and would ultimately result in the calculated HCl concentration be higher than what it actually

On average the Alka Seltzer tablet dissolved faster in hot water in comparison to ice cold water and room temperature water. The beaker with ice cold water caused the Alka Seltzer tablet to dissolve the slowest. The three beakers containing different temperatures of water, all produced carbon dioxide bubbles; however, the beaker containing hot water produced the bubbles more rapidly.

Change in color once chemicals were combined (experiments b,c,d,e,f,g,h,j,l); Precipitate formation (experiments g,j,l), and formation of gas bubbles (experiment a).

From the results that were acquired from mixing the liquid reagents with each powder, it was determined that Unknown Mixture #1 consisted of baking soda and cornstarch. When individually testing the substances from Unknown Mixture #1 with the liquid reagents, a few noticeable reactions occurred. Mixing baking soda with vinegar caused bubbling to occur. This is because a neutralization reaction took place between the two reactants. In this reaction, sodium bicarbonate(baking soda) reacts with vinegar and produces sodium acetate, water, and carbon dioxide(HC2H3O2(aq) + NaHCO3(aq) NaC2H3O2(aq) + H2O(l) + CO2(g) ). The gaseous carbon dioxide most likely tried to escape into the atmosphere and caused the bubbling to occur. Another noticeable reaction

The boys did create and experiment and analyze the results in the graph. I don’t know exactly how the boys conducted the experiment but I’m assuming they kept it fair. The biggest way that they bubbles may have not been fair is if Harry blew all the normal solution and Steven blew all the special solution or vice

All three trials used the same amount of hydrogen peroxide, dish soap, food coloring, water, and same-size soda bottles. The control group (1tsp of yeast) had a slower reaction time compared to the other trials as well as the foam not overflowing the bottle. Trial 1 had 2 tsps of yeast, Trial 2 had 3 tsps of yeast, and lastly Trial 3 with 4 tsps

In A Gesture Life by Chang-rae Lee, the main character Doc Hata often fails to relent in his relationships. He lives a life of gestures while trying to maintain a good reputation but yet he neglects to show that same level of care for those that he is closest too. Doc is mostly a lonely person but his life was shaped by three women which he all hurt at some point. It it through these three that we can see how Doc fails to show compassion.

Record the height of the bubbles in a table every minute until the stopwatch reaches 5 minutes.