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Alkaline Earth Metals Lab

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Alkaline Earth Metals Lab Report

INTRODUCTION: This lab is designed to find a pattern in reactivity of different alkaline earth metals. Alkaline earth metals are elements in group 2 of the Periodic Table of Elements. These include Calcium, Magnesium, Barium, Strontium, Beryllium, and Radium, all of which are found in natural compounds and react with water, except for beryllium. Groups are sometimes called families, because they share chemical properties, behaviors, and reactions, due to the fact that they have the same valence electron shell configuration. They are the second most reactive metal, next to Alkali metals, which are in group one. Alkaline earth metal have two valence electrons. Losing electrons becomes easier the more sublevels there are in an …show more content…

Calcium was then added into the water. A second test tube was then placed over the first, in order to collect anything given off from a reaction between the calcium and water, if it ensues. If a reaction does occur, the “collection tube” would then be placed over a lit splint. Following this, observations were taken on what had presented itself so far. Then, a drop of phenolphthalein was added to the calcium and water mixture, which could also be called the reactant tube. If the water changes colors after it’s added, that means the mixture is a base. Observations recorded on this step focused mostly on physical changes. To go even more in depth for part A, magnesium was also tested for reactivity. The steps for Mg are consistent with the steps for Ca, apart from that in this instance, the test tube is boiled after the metal is added to the water. Observations were still recorded. Part D also observed reactivity. First, 1 mL of MgCl2 was combined with 1 mL of Na2CO3 in a clean, empty test tube. In another, CaCl2 and Na2CO3. Then, observations were noted for

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The compounds tested in included the unknown, Calcium Nitrate, Calcium Chloride, Calcium Carbonate, Sodium Chloride, Potassium Chloride, Magnesium Chloride, and Ammonium Chloride. The next test was the pH test. In this test, the aqueous solutions from the flame tests were used again. A piece of pH paper was dipped into the aqueous solutions, a different piece for each solution. The ensuing coloration of the paper was compared to the pH scale and the

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For Station 4 , the magnesium and zinc turnings blackened when introduced to Cu(NO3)2 . Copper (II) nitrate, zinc nitrate and magnesium nitrate all changed colour when sodium carbonate was added. b)Magnesium is most reactive (#1). Zinc is second most reactive (#2). Copper is the least reactive (#3).

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Copper Transformations Prelab Questions Three metals ions are Magnesium, Iron, and Nickel. Iron is used in the sea with iron rich minerals, for substances. Iron was also used in the formation of earth.

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When we placed the aluminum foil in copper chloride, a chemical reaction occurred. Before the reaction took place we had aluminum foil and copper chloride as our reactants. After the reaction happened, the products were aluminum chloride and copper. After the foil was placed in the copper chloride, the color of the aluminum foil had changed from a shiny silver, to a deep red. Also, the color of the copper chloride changed from a light blue to a murky green.

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Single Replacement Lab: Conclusion Questions Vaidehi Phirke To summarize the observations from the lab, many of the outcomes were similar in appearance, but different in their products’ chemical compositions. Of the reactions in which solid magnesium was added into the various solutions, 4 (which included copper (II) sulfate, lead (II) nitrate, silver nitrate, and zinc sulfate as reactants) of the total 5 that occurred resulted in the seeming disintegration of the solid magnesium into black flakes (color change) and the other one (which included sulfuric acid as a reactant) resulted in furious bubbling and fizzing (gas production). Of the reactions in which solid copper was added into the various solutions, only one reaction was observed (in which silver nitrate was a reactant) and it resulted in the blackening (color change) and flaking off of

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Did a chemical reaction occur when we placed aluminum foil in copper chloride? Chemistry exam CER A chemical reaction occurred when we placed aluminum foil in copper chloride. The reactants in our lab were aluminum foil and copper chloride solution.

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Throughout the experiment, copper was altered a total of 5 times, but after the final chemical reaction, solid, elemental copper returned. Each time the solution changed color, a precipitate formed, or when gas appeared, indicated that a chemical reaction was occurring. For the first reaction, copper was added to nitric acid, forming the aqueous copper (II) nitrate (where the copper went), along with liquid water, and

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Then test tubes A and C contained bromine. Test tube A was placed under the light and test tube C was placed in the dark. After the reactions occurred, test tube A was the only test tube that contained a white solid and was vacuum filtered. It was then washed with DCM and the leftover substance was the product. Capillary tubes were then obtained and filled with the solid product.

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Using the Law of Definite Proportions, the mass of this product was used to determine the number of moles of copper and chlorine in the sample, which led to being able to determine the

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The purpose of the lab was to discover the properties and the trends of the alkaline earth metals. In part A, the trend was as the atomic number increase in the alkaline earth metals the elements are more reactive. The alkaline earth metals each have two electrons in their outer shell and because all electrons want to become stable they are ready to give up the two electrons. When they are combined with water, the chemical reaction occurs differently based on each element.

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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

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Investigation B: NaCl is soluble in water, which caused the salt to dissolve into the water. It is a physical reaction because evaporating the water leaves the salt

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CLAIRE MUNTING 29/01/2018 Criterion C EFFECTS OF SURFACE AREA OF CALCIUM CARBONATE UPON RATE OF REACTION Calcium Carbonate Chips 1 Introduction: Within the current investigation, the effects of the surface area of Calcium Carbonate (CaCO3) in combination with Hydrochloric acid (HCl) upon its rate of reaction. CaCO3, commonly referred to as limestone, is an organic substance and is, in a sense, the crystallised “carbonic salt” of the element, calcium2. In addition to being a salt, the pH level of Calcium Carbonate is 9.91, and it is therefore, a basic substance, due to the fact that it is comprised of a pH level higher than 7, which is neutral3. HCl, however, is the bodily acid found in the stomach of human beings.

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The observations were recorded. Mg(s) + 2H2O(aq) → Mg(OH)2(aq) + H2(aq) Ca(s) + 2H2O(aq) → Ca(OH)2(aq) + H2(aq) 3. Two test tubes were filled with 3ml of 6M HCl respectively. A piece of magnesium ribbon is dropped into one test tube and small pieces of calcium is dropped in the other test tube.

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Abundance Occurrence and distribution of rare earths are not only of interest because of their usefulness for industry but also because they have raised a discussion whether rare earths might be essential for plants, animals and even humans. The most plentiful rare earth element, cerium, occur more often in the earth’s crust than lead, molybdenum or arsenic. Lanthanum and neodymium occur in similar quantities as lead. But even thulium, the rarest of the rare earth elements, can be found more often than gold, platinum or iodine. On this fate, REEs are not “rare” at all.

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