Above is a table showing the experiments we performed. For each the given quantity of the substance was placed into a plastic bag and a reaction would occur. Experiment 1 was given to us. After mixing the solid ingredients together, placing the phenol red solution in the bag, squeezing the air out of the bag, and then tilting the bag, so that the phenol red solution could mix into the solids a reaction occurred. The reaction we observed from Experiment 1 was as soon as the Phenol Red hit the baking soda and calcium carbonate the mixture started to fizz and turn orange. Then it turned into a bright yellow color. The bag filled with air and the mixture became very hot. The baking soda appeared to dissolve quickly, but the calcium carbonate dissolved very slowly. After a while, the bubbles calmed down and the mixture cooled down. We decided on our approach to Experiment 2 because we thought it would be easier to change the quantity of Sodium Bicarbonate or Calcium Chloride, then the Red Phenol. We decided to do less of the Calcium Chloride to see if in a smaller quantity it dissolved more. The answer was, yes and the Calcium Chloride dissolved much faster and eventually completely. Other differences between this experiment and the first was there was no heat. It was actually quite cold. There were also less bubbles and the …show more content…
Experiments 3,4, and 5 removed one of the variables. We found in Experiment 3 with Sodium Bicarbonate and the Red Phenol Solution that the reaction was cold, red, and no bubbles or gas was released. In Experiment 4 with Calcium Chloride and Red Phenol the reaction was red, hot, and again no bubbles or gas was released. The Calcium Chloride once again slowly dissolved. Experiment 5 removed the Red Phenol and replaced it with water. We were surprised when the exact same reaction happened as what happened with Experiment 1, minus the color
The experiment was not a success, there was percent yield of 1,423%. With a percent yield that is relatively high at 1,423% did not conclude a successful experiment, because impurities added to the mass of the actual product. There were many errors in this lab due to the product being transferred on numerous occasions as well, as spillage and splattering of the solution. Overall, learning how to take one product and chemically create something else as well as how working with others effectively turned out to be a
A: According to the observations in the table above, I have concluded that icing sugar is the mystery powder. From the very beginning of the experiment it was narrowed down to two substances, icing sugar and cornstarch. It was concluded to be those two because the physical appearance and the texture only matched with icing sugar and cornstarch. The two main factors of finding the mystery powder was the reaction with water and vinegar.
* It was almost impossible to tell when the Alka-Seltzer tablet had dissolved, each time the experiment was done. This was a huge problem for the experiment as this could have totally caused problems to the experiment. A special type of detector apparatus, which bleeped when the correct amount of Alka-Seltzer tablet dissolved, could improve this, each time the experiment was done.
The objective of this experiment will be to combine various substances, liquids and metals, and to observe their behavior when they are combined. The types of reactions observed shall determine the nature of these reactions: physical or chemical.
The lab experiment did prove that Crayola colors are not of pure substances but rather a mixture of specific color compounds needed to produce said colors. The experiment also proved that different color pigments have different densities (the lighter ones moved up the filter paper with the water, while the heavier ones adhered to the filter paper longer.)
When it comes to the observation part of forming the experiment as well as after the experiment was done, a lot of groups observed the same things. The most significant observations were we observed the
== Refer to Chemistry Lab # 2 – Investigating Changes. No changes have been made in this experiment. Results = ==
I have been a snob. It is quite soft, but solid. It reacts with hydrochloric acid. like this 2 CaCO3 + 2 HCl â’ CO2 + CaCl2 + H2O. producing carbon dioxide, which is what we measured in the experiment. There are different factors affecting the rate of this reaction, such.
== Refer to, Chemistry Lab #1 – What’s the substance? However, I changed some of procedures during my experiment, here is the changes I made in this experiment: * I only used the toothpick to place a small amount of each sample on a separate piece of paper, instead of the spatula.
Investigate the effect of changing the concentration of hydrochloric acid and the volume of carbon dioxide produced by a reaction between hydrochloric acid and marble chips (calcium carbonate). Chemistry Coursework To investigate the effect of changing the concentration of hydrochloric acid and the volume of carbon dioxide produced by a reaction between hydrochloric acid and marble chips (calcium carbonate) Planning experimental procedures Aim In this coursework I will be investigating to see how the concentration of acid affects the rate of reaction with marble chips. Hypothesis Part 1 I predict that the rate of reaction between the acid and the marble chips (calcium carbonate) will increase as the acid concentration increases. This is because in an acid solution with a greater concentration there are more particles present in the same volume of acid.
This carbon dioxide will escape into the air as bubbles or foam, and it is this gas you can use to blow up a balloon!The chemical reaction caused by mixing baking soda and vinegar can cause balloons to race, homemade volcanoes to erupt and bubbles galore. Balloons are often used in baking soda and vinegar experiments because you can see the result of the chemical reaction. When baking soda and vinegar are mixed together, it creates a gas called carbon dioxide. The gas begins to expand in the bottle and starts to inflate the balloon. The more gas that is created, the larger the balloon will
If I'm going to mix vinegar and baking soda together, will it be a mixture or a compound? Now, vinegar will be the solvent because it will be the substance that the solute will be dissolving in. Of course, the solute is baking soda, or the substance that will be put inside the larger substance. When I mixed them together, bubbles started forming and rising. What happened? Did a reaction happen? How do we know? Here is the chemical formula of the mixture: NaHCO3 + CH3COOH ----> CO2 + H2O + Na+ + CH3COO-. As you can see, the molecules of the reactants: vinegar and baking soda, are found in the product. This means that the molecules and atoms in the reactants had rearranged and reform to make the new product. The acetic acid in vinegar reacts with the carbon dioxide to form sodium acetate and carbonic acid. The carbonic acid will then go under a decomposition reaction and for carbon dioxide. Since the carbonic acid had went through a reaction and turned into a gas, which leaves the sodium acetate solution. How do we know that carbon dioxide is formed? Well, the bubbles that come out during the reaction are the carbon dioxide escaping the solution as a gas.
Baking soda is used to make a mixture rise and therefore as a base it reacts with an acid to get co2 gas, water and salt. This reaction takes place once the mixture has been mixed properly. The co2 gas bubbles rise in the oven at 80 C and gives a light spongy texture. If you decide to wait after you have mixed the ingredients the mixture may fail to rise and ruin your recipe.
Antacids can fizz and bubble when you put them in water. This is because of the ingredient sodium bicarbonate, also known as baking powder reacts to the water. The other ingredient that is needed to make it fizz is citric acid. These chemicals when combined create carbonic acid. The carbonic acid then produces water and carbon dioxide. This is similar to soda, they both contain carbon dioxide. The f...
Effervescence occurred as carbon dioxide gas has been released which caused bubbling inside the plastic container.