667 Milliliters Experiment

For my project, I tested which ratio of baking soda and Vinegar would result in the greatest reaction. I also wanted to see if the having more baking soda or vinegar would result in the greatest reaction. My experiments original design was to use a film canister and put baking soda on the lid and the vinegar in the actual canister. Then I would put the vinegar in the canister and clasp it on the lid with the baking soda. Then the canister would launch up because of the reaction. This did not happen as it was supposed to because the vinegar spilled everywhere when I tried to secure it to the lid with the baking soda. I also had trouble because the canister kept falling over and the vinegar and baking soda would spill on the ground. Then I tried using a test tube

Some of the constants in our experiment did not always stay the same. For example, the pace of the dropping of the pennies Also, sometimes we might have put an extra drop of water when we were only supposed to put 3 drops. Also the height where the pennies were dropped, wasn't always the same. The data did not support the hypothesis because Up and Up held more pennies that Kleenex did.

The experiment started by gathering all the necessary materials (Bubble Gums, a ruler, a timer, papers, a pencil, a picture camera and a cardboard poster). Then, with the help of my partner (my mom), the experiment got started. I chew a piece of each gum for 2 minutes, each at the time, started by Hubba Bubba, then Bubble Yum and last Bazooka. I blow a big bubble, my partner measured, and the result was recorded. The same steps were repeated 3 times for each brand of gums, and the average size was calculated by adding the size of each bubble and divided by 3. Lastly, results were compared. The average size of the bubble made by Hubba Bubba Gum was 3.8 cm, Bubble Yum was 3.5 cm and Bazooka Gum was 3.3 cm.

(with lids & gauge). It showed that there was significant difference between the two situations that

Test 1: Water from one standard beaker is poured into the taller and narrower beaker and the child is asked to determine if the beakers have the same amount of water.

In this experiment, I have conducted a result of substances, whether they are basic or acidic, by using the Universal Indicator and Litmus Paper. We tested 13 household substances, with two extra substances called hydrochloric acid and sodium hydroxide. Those two substances were used as to control the experiment. Five out of thirteen substances had the same PH, while the others had different numbers. The ones that were different were mostly off by a number, which tells us that it is slightly accurate, comparing to those two indicators. For an example, conditioner has a PH of 4, known as medium acidic, acids have a lot of hydrogen, which makes the scales stick down better when it's acidic. The Universal Indicator is more accurate than the Litmus

Out of the trials of the experiment, the hypothesis was predicting that the control would have the shortest time, the red composition (75% Water, 25% Corn starch) would have the second shortest time, the yellow mixture (50% Water and 50% Corn starch) would have the second longest time, and the blue fluid (25% Water and 75% Corn starch) would have the longest time. In trial one, the results did not behave in the predicted way because the red mixture took 0.05 seconds longer than the yellow composition. Trials two and five behaved the way the hypothesis predicted. Similarly to trial one, in trial four the red mixture took 0.11 seconds longer than the yellow. Finally, trial three showed that the control took 0.07 seconds longer than the red composition.

At the end of the test the results showed that at the age of 4 none of the children realised that the beakers still had the same amount of water in even though beakers different. At the age of 6 12 of the children had made the correct assumption that even though beaker was bigger it still held the same amount, and by 8 years old 8 more of those children had said they were the same.

Sources of error include massing the flask with all substances before the reaction was fully completed; which could be the cause for trial 7 (seen table 1) having a lower average % by mass as the vinegar was increasing. Another origin of error would be using two different beakers, the differences in the mass of the beakers affects the lab results of the initial and final massing between

Fill one bottle with 200 ml of water, and the other with 200 ml of sand. Have students verify the amount of sand and water being poured.

Another reason why results may have varied from group to group could be due to miscalculations and human error while performing dilutions. Dilutions is a very important part of the experiment and if there was an error in one simple dilution then it could have carried on from tube to tube having detrimental effects on the concentrations of the solution being created.

The purpose of my science experiment was to demonstrate the separation of casein molecules from milk, soda, and juice; which can form into a plastic substance. In this experiment i decided to use different types of liquids instead of limiting it to just only milk. I chose this experiment because i was interested in discovering why/how vinegar can have such a big influence on different types of liquids. My hypothesis was that the milk would be most successful in turning into plastic or at least the closest one to turning into plastic. For my procedure i got all three liquids, and put them in their corresponding bowls. Then i heated all three bowls up. After heating all three bowls up i poured vinegar into each one and stirred them for a good

Results and Discussion In this experiment, aspects of the scientific method were introduced and the significance of the process of gathering measurements during an experiment were illustrated through the use of a diverse set of glassware: graduated cylinder, volumetric pipette, and burette. These unique measuring instruments played a role in concluding the densities of the two soft drinks, Coke and Diet Coke, and whether or not a statistical difference existed between the two substances. Conversely, the resulting densities determined by each of the differing glassware were assessed and compared to each other in terms of accuracy and precision, with the most precise tool that produced consistent similar results, deduced.

Testing this will entail taking a sample of the 2-liter bottles and measuring their contents. In terms of the hypotheses formulation you give the company the benefit of the doubt and assume that their claim is true. Using this approach the hypothesis will be stated as given below:

| At a .05 level of significance, we reject the null hypothesis. There is enough evidence to support the claim that the bottles contain less than sixteen (16) ounces.