Chemical Reaction Lab Report

When calcium chloride, sodium bicarbonate, and phenol red are put into a bag and mixed up the type of reaction that occurs is a chemical reaction for the following reasons. Things that indicate that a chemical reaction has occurred are color change, formation of precipitate, formation of gas, and energy transfer in which three of them took place in the reaction of calcium chloride, sodium bicarbonate, and phenol red. The three indicators in this experiment were: a color change, formation of gas, and an energy transfer

During the preparation of the, “Turning Pennies Green”, lab, students were asked to perform an experiment at home. The lab demonstrates what the effects of chemical and physical changes are. Students were asked go home, put two pennies in separate bowls, and label one bowl cup A, water and cup B, vinegar. Then, they were asked to place paper towels in the bowl. For cup A, water was to be poured in, but just enough to wet the paper towel inside, so the penny was not submerged.

to compare the results, and neither solution was expected to produce an observable chemical reaction. The procedure was the same as used for the test with 6M HNO3 and 0.1M AgNO3 solution and the test with 6M HCl and 0.1M BaCl2 solution. A third experiment used was the flame test. First, a scoopula was used to place 0.1 grams of the unknown compound in a test tube, and a wash bottle was used to add approximately 2 mL of deionized water to create a solution.

The indicators of the chemicals changes that has happened were, heat was produced (when the blue flame occured because of methane and oxygen gas heated the watch glass) in reaction 1, the bottom of the watch glass became black (changed colour and a precipitate was formed) due to the same procedure but less oxygen for reaction 2, and the colour changed for the foil and bubbles/gases were produced for reaction 3. Moreover, in reaction 4, the colour of the copper also changed and the smell was like smoke. In reaction 5, the colour of the solution changed continuously as mentioned in the observations, with bubbles, gases (oxygen), and heat were produced. And lastly in reaction 6, hydrogen gas were produced because of the burning splint test, indicating that a gas was produced. Temperature change occurred in some of these reactions (e.g., reaction 1, reaction 5, etc.), making it one of the indicators of a chemical change as well.

Purpose: The purpose of this lab is to be able to perform four different types of chemical reactions. With the information gained from these reactions, identify the products of the reactants with be identified and balanced equations for the reactions observed will be written. Procedure: Provided by Teacher.

Purpose: The purpose of this lab is to further observe four types of chemical reactions. This lab will show four types of distinct chemical reactions and will increase my knowledge on each type.

Matter is anything that takes up space and has mass. All matter is made out of many tiny atoms. Chemical change is substances that change into different substances. A physical change is a substance changing its appearance without rearranging how the atoms are bonded together. The law of conservation of mass states that matter is neither created nor destroyed by chemical or physical changes.

The chemical reactions that could be used to store energy are Decomposition Reaction (Invisible Ink) and Reversible Decomposition-- Combination Reaction (Dehydration of Blue Vitriol/ Rehydration of Copper (II) Sulfate). 2. The following reaction is exothermic, Heme-O2 +CO  Heme-CO+ O2 .

Discussion: The main scientific concept explored in this laboratory was the ability to observe the chemical reaction between Fe and Cu and to determine the ratio of moles of iron used to moles of copper produced in the reaction. A chemical reaction occurred when we used 4.06 grams of copper (II) chloride and mixed it with 9.43 grams of iron nails. The copper (II) chloride used 1.24 grams of iron from the nails to produce 1.99 grams of copper solid.

This is done through a change in temperature. Over time, two objects that are in direct contact will

Purpose: The purpose of this experiment was to observe the many physical and chemical properties of copper as it undergoes a series of chemical reactions. Throughout this process, one would also need to acknowledge that even though the law of conservation of matter/mass suggests that one should expect to recover the same amount of copper as one started with, inevitable sources of error alter the results and produce different outcomes. The possible sources of error that led to a gain or loss in copper are demonstrated in the calculation of percent yield (percent yield= (actual yield/theoretical yield) x 100.

Fatima Gowher Uzma Gowher Tanishq Gadkari Fritz Flores Block 1 Chemistry Honors AbstractWhat happens when two merely different “things” are combined? By things, I mean two different substances.

Chemical reactions happen in industrial processes, living systems, and chemical laboratories. These reactions are thought to form products during their processes. These reactions are called combustion, synthesis, decomposition, precipitation, single-replacement, double replacement, acid-base, and redox. Combustion is known as burning. It happens when a substance combines with oxygen, which results in the release of large amounts of energy forming heat and light.

Through of series of tests and calculations, the sample of metal that was tested for during this lab was determined to be Bismuth. The specific heat that was calculated in lab, for the metal sample that was observed, was 0.012 cal/g°C and the density was 9.14 g/mL. The known specific heat for Bismuth is 0.03 cal/g°C and the density is 9.79 g/mL. Although the measurements are not exact, Bismuth is the metal with both the closest specific heat and density to the metal that was measured in lab. Three different tests where used to determine the density of a soda can, the Archimedes method, the use of a graduated cylinder and the use of an opened soda can to measure the volume of the can. The method that was determined to be the most effective

A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?