not man made. It must be inorganic which means I must not be formed from an organic substance like a fossil of any other living creature. It must have a specific crystalline structure that is formed from simple salts and complex silicates. And it must have a definite chemical composition which defines the minerals structure. The way that you differentiate between minerals is by the way they react to specific tests like for instance the acid test some minerals will have a bubbling action and other
Premium Mineral Solid Chemistry
PIEZOELECTRICITY AND APPLICATIONS Piezoelectricity is the ability of some materials such as crystals and certain ceramics‚ to generate an electric potential in response to applied mechanical stress or heat. If the piezo crystals are not short-circuited‚ the applied charge induces a voltage across the material. The word Piezo is derived from the Greek “Piezein”‚ which means to squeeze or press. The piezo material exhibits both “Direct piezo electric effect” as well as ‘Converse piezo electric
Premium
acetanilide 5. 38 ml total solvent volume 7. Added tip of carbon black to mixture and mixture almost boiled over! 8. 28 ml total solvent volume C. ISOLATING THE RECRYSTALLIZED PRODUCT WITH VACUUM FILTRATION 2. Chilled crystals in ice bath for 19 minutes. collected flaky white crystals Mass of watch glass and acetanilide = 22.5478 Mass of watch glass = 21.6903 Mass of recovered acetanilide = 0.8575 g Mass of impure acetanilide = 1.5637 g Percent recovered = 54.8 % D. DETERMINING THE MELTING
Premium Solubility Solvent Solution
Lab 12: Reduction of an Aldehyde to a Primary Alcohol by Use of NaBH4Purpose(i)To select an appropriate solvent system. (ii)To synthesize alcohol from aldehyde by NaBH4 reduction. (iii)To identify the aldehyde isomer based on the melting point of the alcohol produced. Procedure(Please refer to the detailed instructions on lab 12 handout)Physical Quantity TableType of substanceMolecular FormulaMolecular Weight (g/mol)Density(g/cm3)Melting Point(oC)Boiling Point(oC)HazardO-vanillinC8H8O3152.15-42
Premium Solvent Chemistry Alcohol
more soluble at higher temperatures". 1 Crystallization is a delicate procedure that involves the slow formation of a crystalline solid. Rapid formation of an amorphorous solid is called precipitation‚ which can contain many impurities. "The purest crystals are obtained when crystallization occurs slowly from an undisturbed solution".2 In general‚ crystallization is the easiest process to purify a solid substance to an acceptable quality for basic laboratory work. EXPERIMENTAL SECTION The experimental
Premium Chemistry Solid Crystal
How to Grow Alum Crystals Background Information A crystal or crystalline solid is a solid material‚ whose constituent atoms‚ molecules‚ or ions are arranged in an orderly repeating pattern extending in all three spatial dimensions. The scientific study of crystals and crystal formation is crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. Potassium alum (Aluminum Potassium Sulfate) is the white crystalline natural
Premium Alum Crystal Solid
as sugar cubes or crystals‚ the temperature of the water‚ and the concentration of the solution. Learning that these factors contribute to the rate of dissolving a solute‚ I hypothesize that the increase in water temperature will decrease the dissolving time of the sugar cube and sugar crystal. For this experiment the temperature of the water represents the independent variable. The dependent variable is represented by the dissolving time of the sugar cube and sugar crystal. The amounts of water
Premium Sugar Solubility Temperature
Each grain of sugar is made of a small crystal that is made of an arrangement of molecules called sucrose. In a sugar crystal‚ the sucrose molecules are arranged in a pattern that extends in all three dimensions‚ and all of these molecules are attracted to each other by a type of interaction that binds molecules together called intermolecule forces. When you add granulated sugar to water‚ some of the sucrose molecules start separating from one another because they are attracted to the water molecules
Premium Water Sugar Sucrose
2.82 g hydrated crystal (CuSO4*5H2O) * Evaporating dish * Bunsen burner * Electronic balance * Metal tongs * Ring stand Procedure: 1) Determine the mass of evaporating dish and watch glass. 2) Add between 2 and 3 grams of the hydrated crystal to the evaporating dish. 3) Determine the mass of the dish and crystal. 4) Heat the substance until it turns white. 5) Let the dish cool. 6) Determine the mass of the dish and anhydrous crystal. 7) Clean up
Premium Water Crystal Science
Piezoelectric crystals are one of many small scale energy sources. Whenever piezoelectric crystals are mechanically deformed or subject to vibration they generate a small voltage‚ commonly know as piezoelectricity. This form of renewable energy is not ideally suited to an industrial situation. The ability of certain crystals to generate Piezoelectricity in response to applied mechanical stress is reversible in that piezoelectric crystals‚ when subjected to an externally applied voltage‚ can change
Premium Force Wave Classical mechanics