Chemical Reaction Lab

The purpose of this report is determine if sodium chloride is a viable option as a deicer on winter roads. To determine this, one must compare a multitude of factors. In this lab, the freezing point depression of water, enthalpy of dissolution, cost, and environmental impact will be discussed. A large factor in how effective a substance is as a deicer is it’s ability to decrease the freezing point of water. If the freezing point of water can be lowered, the outside temperature must be much colder to reach this new freezing point, resulting in less ice on the roads.

The first question is, After you stir and mix the substances, could you still see the cornstarch and water? No, because they were mixed together. The second question is, Describe how the new mixture is different from the original substances. The answer for that is it looks like a liquid, feels like a solid, but when you touch it, it drips. Another question is, Was the new mixture made from a physical change or chemical change?

Each sample of solution #3 being tested by the three reagents will have the most noticeable change in color in result of a positive reaction between solution #3 and the reagent. 5. We took three samples of three solutions, a positive control, and a negative control (fifteen test tubes total.) Each sample was tested by Benedict’s, Biuret’s, and Lugol’s Reagent for a reaction. The result of the reaction was then recorded in notes.

Factors that affect chemical reactions Intro: this experiment is to show us what factors affect the rate of a chemical reaction. Supplies: The Works Liquid Toilet Bowl Cleaner, TUMS antiacid tablets, a non-serrated knife, a spoon, a stirring rod, four test tubes, flame heater, a small beaker for the boiled water, rubber gloves, and safety goggles. Procedure: we filled a beaker 3/4 of the way full with tap water and brought the water to a boil. We then labeled our test tubes 1,2,3,4.

The next thing we tested was the way the red worms reacted towards chemical stimulus. What types of stimulus attracted them the most? In this lab we applyed a couple drops of each substance on a paper towl and observed the way the worms reacted towards it. Our

The purpose of this laboratory experiment was to identify the molarities of dye present in green Powerade and then create a solution that possessed the same concentrations. This experiment consisted of two parts of experimentation, the first part focused on identifying the dyes present and at what concentration, and the second part focused on the recreation of the stock solution. To successfully complete this experiment, a small cuvette, full of 2 mL of green Powerade, was placed into a UV spectrometer in order to identify which wavelengths were being absorbed and reflected. With this information a complete series of dilutions using yellow #5 and blue #1 dye in ratios of 1:1, 1:2, 1:3, 1:4, and 1:5 were conducted to find the max peak absorbancy

How does the amount of baking soda mixed with vinegar affect the volume of gas produced per 10 seconds? A reaction is when (usually) a solute acts on a solvent to create a reaction. An example of a reaction is an explosion, Here we will be using baking soda and vinegar which are our two components which will cause for a reaction to take place. Reactions can be affected by several things such as temperature, concentration and the presence or absence of a catalyst which is a substance which can increase the rate of reaction.

Introduction: The purpose of this experiment is to demonstrate the different types of chemical reactions, those including Copper. There are different types of chemical reactions. A double displacement reaction is a chemical process involving the exchange of bonds between two reacting chemical species. A a decomposition reaction is the separation of a chemical compound into elements or simpler compounds and the single-displacement reaction is a type of

Lab Report Experiment 6 Rates of Chemical Reactions By Nikhola Mirashirova Lab Partner: Dina Abetova Section 3, Saturday October 31, 2015 Introduction Rate reaction is the measure of the change in concentration of the reactants or the change in concentration of the products per unit time.1,2 Rate law for this experiment: Rate = k(I-)m(BrO3-)n(H+)p There are several factors which affect the rate of reaction: catalyst, reactant concentration, and temperature.1,2 A catalyst is a substance that changes, increases or decreases, the rate of a chemical reaction but is not being used up during the reaction.3 It provides an alternative way, so that the rate of reaction changes.4 Catalyst, which is used in this experiment, is (NH4)2MoO (0.5 M).

Conclusion: In Station 1- reaction 2, Station 3- reaction 1, Station 4-reaction 1, Station 5 reaction 1, Station 6-reaction 1 and 2, and Station 7- 1 and 2 there was chemical reaction because all of those mixed ionic compounds created a precipitate. However some solutions did not become insoluble and produce precipitates such as: Station 1- BaCl2 (aq) + KNO3 (aq) , Station 2- KNO3(aq) + AgNO3(aq) and KNO3(aq) + CaSO4(aq), Station 3- Na2CO3(aq) + KNO3(aq) , Station 4- NaPO4(aq) + KNO3(aq)

Chemistry Essay: Impact of the use of chemical reactions on the efficiency of a car In this essay I will explore two chemical reactions and how they impact the efficiency of a car. I have chosen to talk about airbags, and nitrous oxide. I will explain how they work, how they enhance a car and talk about how the implication of science has solved everyday problems of a car. Lastly I will talk about what affect these chemical reactions have on the environment.

Then the balloon is lifted up so that the baking soda runs into bottle to react with the vinegar inside. Immediately the balloon is inflated by the carbon dioxide formed. The baking soda is kept constant when the experiment is repeated for another different amount of vinegar. Results/Findings When sodium bicarbonate and vinegar mix,

Have you ever wondered if a balloon can self inflate? How big will the balloon get when different acids are used? If the vinegar reacts to the baking soda more, will the balloon blow up more? The hypothesis is that the balloon with the vinegar and baking soda will inflate more. It needs to be explored because different acids react differently with the baking soda.

Plants get their energy from a process called photosynthesis, which occurs in organelles called chloroplasts. Chloroplasts contained multiple colored pigments that aid in the photosynthetic process. There are two types of colored pigments: yellow pigments or carotenoids, and green pigments or chlorophylls. Both categories of pigments also include other types of pigments and all are essential for carrying out photosynthesis and each have a role for helping plants receive energy (Pavia et al 208). In this experiment, carotenoids and chlorophylls were extracted from spinach leaves using techniques of column chromatography and thin-layer chromatography.

Did you ever blow balloons on your birthday, and the air accidentally escaped turning the balloon to its normal form again? This change is called a physical change. However, If you burned the balloon it’ll be a chemical change. Chemical change is any change that results in the formation of new chemical substances1. Meaning that it turns to a whole different thing, such as a paper burning and turning to ashes.