Publication Date: February 23rd‚ 2003 Does Eating Chocolate Cause Acne? Victor Seo Toronto University ABSTRACT It is often said that eating chocolate will give you acne. To further this idea‚ 400 students from high schools are divided into 4 groups and each group is given different amounts of chocolate daily (1 bar‚ 3 bars‚ 6 bars‚ or 10 bars). They are treated for a month until the observation is finished. After testing them‚ data shows that there is a weak positive correlation between
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Experiment Plan By: Ashley Project Question: What size of bouncy ball bounces the highest‚ small‚ medium‚ or large? * I predict the following will happen (my hypothesis): I predict that the smallest ball will bounce the highest since it is the lightest. | * Independent Variable: I will be changing the ball size. * Dependent Variable: The height of the bounce. * Controlled Variable: The height that I will drop the balls at. | The materials and amounts of each that is
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The alkylation of 1‚4-dimethoxybenzene is very favorable because of the presence of two methoxy groups. The groups act as activators to electrophilic aromatic substitution because of their ability to donate electrons through resonance. This enhanced activation helps favor the initial substitution. After this‚ the ring has two methoxy groups and an alkyl group attached to it. The addition of the alkyl group further activate the ring for another electrophilic aromatic substitution. The addition of
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Parachute experiment Aim: The aim was to find the effect of holes on a parachute‚ varying their size and number. Hypothesis: 1. By increasing the number of holes‚ the time it will take to the parachute to reach the ground will be longer and its flight will be more balanced. 2. By increasing the size of the hole on the parachute‚ the time it will take to the parachute to reach the ground will be shorter and its flight will be less balanced. Apparatus: - garbage bag (squared shape
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effect of water and fertilizer on corn seedlings Biology 1108 Lab Section November 7‚ 2012 Abstract The effect of water and fertilizer on corn seedlings was examined. It was hypothesized before the experiment that enough water with sunlight and air should make the plants grow healthy. It has to do with photosynthesis. Fertilizer is also going to make the plants grow much faster; this is because of the nutrients in it. The experiment took about four to six weeks to complete; it took some days for
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easy to observe a change in colour while titrating. The solution gradually decolorized after reaching the permanganate end point due to the reaction between MnO4- and Mn2+‚ so the end point is read as quickly as possible. 2 mL of H3PO4 solution reacts with Fe3+ to produce Fe (PHO4)2- ‚
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respiration (Evert RF‚ Eichhorn SE & Perry JB 2013). This experiment focuses on the enzyme catalase. Catalase breaks down hydrogen peroxide into water and oxygen. Hydrogen peroxide is a waste product of cell metabolism that can be toxic to the cell (Evert RF‚ Eichhorn SE & Perry JB 2013). The
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The purpose of this experiment was to test the tonicity of potato cells. The potato cells were placed in different test tubes with water and were left there for 15 minutes. The percent change in mass is then used to determine if the cells lost or gained water‚ therefore determining the tonicity of the cell. Although it was a brief short time‚ the final results showed that the more water the potatoes were placed in‚ the more hypotonic the potato becomes. Tonicity is stated to be the state of a solution
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DESIGN AN EXPERIMENT: THE BIGGEST BLOWER EXPERIMENT Design an Experiment: The Biggest Blower Experiment Problem Statement: You have a pack of Hubba Bubba Bubble Gum. Does the amount of sugar in this gum affect the size of the bubble you blow?? Hypothesis: I think that sugar in any gum affects the size of the bubble you blow. I think this because I was watching “The Next Great Baker” and someone was melting sugar and when it cooled off a little he used a balloon blower to make bubbles out of
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1. An experiment was run to examine the amount of time it takes to boil a given amount of water on the four different burners of her stove‚ and with 0‚ 2‚ 4‚ or 6 teaspoons of water. The numbers in parentheses are run order. The results of the design are given below. Salt (teaspoons) Burner 0 2 4 6 Right Back 7(7) 4(13) 7(24) 5(15) 8(21) 7(25) 7(34) 7(33) 7(30) 7(26) 7(41) 7(37) Right Front 4(6) 4(36) 4(1) 4(28) 4(20) 5(44) 4(14) 4(31) 4(27) 4(45) 5(18)
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