one could give through eggshells. This steps was made by the researcher to make a chalk out of eggshells;First she clean the empty eggshell of the chicken through washing‚then when the eggshells is already dry‚ she pound the clean eggshells very well until it will become a powder‚then she get the residue and she separate it from the eggshell that is already in powder then she pour a liitle amount of water into the powdered eggshell and put it on the paper to form a stick chalk and she let it dry.
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Chapter II Research Body Chalk- is a soft‚ white‚ porous sedimentary rock‚ a form of limestone composed of the mineral calcite. Calcite is calcium carbonate or CaCO3. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed from micro-organisms called coccolithophores. It is common to find chert or flint nodules embedded in chalk. Chalk can also refer to other compounds including magnesium silicate and calcium sulfate. Chalk has greater resistance
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pollution that makes our Environment damage so we decided to make funky colored sidewalk egg chalk as our science investigatory project. So based on our title name we will use eggshell not any eggshell because we will use chicken eggshell as an alternative ingredient for sidewalk chalk‚ we believe that this study will be great and popular because as of now children‚ students and teachers consume many of chalk which is expensive so we do this study and improve it for children who plays on sidewalk outside
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this investigatory project‚ we will use eggshells as an alternative ingredient in chalk production. The study is very efficient in these days because many people are in need of chalk especially the teachers because they use board chalks in school everyday.We noticed that the students and teachers consume many pieces of it‚ which is very expensive. So‚ we decided to make a chalk out of eggshells which is very affordable and can give an equal quality in the chalks that we buy in stores. B. Statement
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- Background of the Study A. Introduction The chalk is a white porous sedimentary rock‚ a form of sedimentary rock composed of mineral calcite. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite plates shed belonging to the division of haptophytes. They function as a special calcium carbonate. In this investigatory project‚ we study the effectiveness of eggshells as an alternative ingredient in chalk production. The study is very efficient in these
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Determination of Calcium Carbonate in Eggshells – Background The major component of eggshells is calcium carbonate‚ CaCO3(s). This analysis is done volumetrically by using a characteristic reaction of carbonate compounds‚ namely their reaction with acids. Calcium carbonate (limestone) is very insoluble in pure water but readily reacts in acid according to the reaction below. 2HCl(aq) + CaCO3(s) → CaCl2(aq) + CO2(g) + H2O(l) + HCl(aq) (in excess) (limiting reagent) (1) (unreacted)
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Phosphoproteins of the chicken eggshell calcified layer The chicken eggshell matrix is a complex mixture of proteins and proteoglycans. It also contains phosphoproteins that are thought to affect mineralization of the matrix. Several of the matrix phosphoproteins‚ such as the major component osteopontin‚ have already been identified as phosphoproteins in other tissues‚ but the phosphorylation status of the eggshell matrix forms was unknown. The phosphopeptides‚ obtained after cleavage of the matrix
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What are eggshells made of? The main ingredient in eggshells is calcium carbonate (the same brittle white stuff that chalk‚ limestone‚ cave stalactites‚ sea shells‚ coral‚ and pearls are made of). The shell itself is about 95% CaCO3 (which is also the main ingredient in sea shells). The remaining 5% includes calcium phosphate and magnesium carbonate and soluble and insoluble proteins. Author: Fred Senese senese@antoine.frostburg.edu A paint thinner is a solvent used to thin oil-based paints or
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is to determine whether different brands of caged or free-range hen eggs have stronger shells. This project will prove whether caged or free-range hen eggshells are stronger. HYPOTHESIS: My hypothesis for this project is that free-range hen eggshells‚ in all of different brands are stronger than caged hen eggshells. I choose free-range eggshells‚ because their diet and lifestyle would be different from caged eggs. EQUIPMENT: * 24 Free-range hen eggs (3 different brands) * 24 Caged
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Alkynes are colorless and insoluble in water. The lower the members of alkynes (acetylene‚ allylene‚ and crotonylene) are gases. The homology from carbon number 5 to 15 (C5H8 to C15 H28) are liquid and the higher members are solid. Acetylene possesses a pleasant odor when pure. The impure acetylene contains phosphine‚ hydrogen sulphide etc and hence smells bad. Acetylene can be liqiufied at 0°C under 48 Torrs of pressure. The melting point of Acetylene is -81.8°C and boiling point -83.4°C. It is
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