Solid

The purpose of this experiment was to apply the understanding of basic solubility principles and precipitation reactions to identify two unknown cations in a given solution. The first two processes involved adding various acids and basis to the unknown solution to observe different precipitation reactions. The unknown solution contained either silver or lead and either barium or calcium. For unknown solution one, adding a sample of hydrochloric acid to the unknown solution started the experiment

The identity of this unknown solid was confirmed by obtaining data for different characteristic properties: solubility and density. The density that we found was 11.21 g/cm3, and that was below the actual density of 11.40 g/cm3. The solid was not soluble in any liquids. Looking at these characteristics, we found the solid to be

tube #1, Recrystallize 50 milligrams of Benzoic Acid from water by repeating experiment one. 2. In reaction tube #2, Add 50 milligrams (mg) of Benzoic Acid into the tube and add the minimum amount needed of hot Methanol to completely dissolve the solid substance 3. Add hot water to the solution in a drop-wise manner, shaking after each addition of water, until solution becomes saturated and the recrystallization process has begun to

bottom half of the beaker would have already absorbed so much heat because they were closest to the strongest of the heat, and become so energized, that they would have been vibrating so fast until enough heat was absorbed to break the structure of the solid and into a liquid. The atoms that made up the ice on the top half, which was not yet melted, would be at the atomic level, but when heated more and more, they will eventually break

differences in bulk properties. Solid is the state in which matter maintains a fixed volume and shape; liquid is the state in which matter maintains a fixed volume but adapts to the shape of its container; and gas is the state in which matter expands to occupy whatever volume is available. This diagram shows the nomenclature for the different phase transitions. More recently, distinctions between states have been based on differences in molecular interrelationships. Solid is the state in which intermolecular

Measure the remaining mass of the ice cubes, and record your results. * Repeat this test three times for each substance used. Reasoning The purpose of this experiment is to measure the reaction of the ice melting when exposed to another solid element. The environment is a kitchen with a stable temperature and testing space. Repeating the tests three times will provide different data which will then be averaged for each element. For each test, calculate the percentage of the ice cube melted

• Casting is one of the earliest manufacturing process. It is the first step in making most of the materials. • Steps: - Making mould cavity - Material is first liquefied by properly heating it in a suitable furnace. - Liquid is discharged into a prepared mould cavity - allowed to solidify - product is taken out of the mould cavity, trimmed and made to shape We should focus on the following for successful casting operation: (i) Constructing of moulds of patterns (ii) Melting and discharging

Experiment 4: Recrystallization of Pure Phthalic Acid, Benzoic Acid and Naphthalene Introduction Recrystallization is a technique frequently used in organic chemistry to purify solid organic compounds. The goal of this technique is to allow organic compounds to form crystal lattice structures, and to remove any of the impurities that do not align within this crystal structure [3]. The theory behind recrystallization revolves around entropy; as heat will cause a organic compound to dissolve (increase

Marwah Alabbad Analysis and Identification of two Geometric Isomers post Lab 9/2/15 1) As conducted in pre lab question, melting point for Maleic acid is 139- 140◦C and Furmaic acid is 287◦C, and in the lab experiment the sample of A and B was identified first by test the melting point for each sample, and the result came as test tube B melted faster than test tube A, which leads to test tube A is Furamic acid and test tube B is Maleic acid, because of the low melting point for Maleic acid, it

Problem/Background Information: Creating a solid from two liquid is an exceptional type of double displacement reaction that produces a precipitate, it happen when anions and cations is merge together in an aqueous solution to form an insoluble ionic solid called precipitate. Reactions are decide to be resolved, depends on the solubility rules for solids in order to know the product and know how to write a net ionic equation, because some aqueous reaction can not form precipitates. It permits