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  Partner: UNT Libraries
 Department: Department of Chemistry
 Decade: 1930-1939
 Collection: UNT Theses and Dissertations
An Analysis of Elementary Science Material Included in Certain Courses of Study and Text Books
The purpose of this study is to assess the contribution of elementary science to the curriculum. The finding of the investigation summarized in table form. digital.library.unt.edu/ark:/67531/metadc29866/
An Analysis of the Naphtha Cut of Cooke county, Texas, Crude Oil
This study attempted to determine hydrocarbons in the crude oil by comparing the results obtained using the two methods of analysis: chemical analysis and Kurtz-Headington analysis. The Kurtz-Headington analysis was found to be adequate to determine hydrocarbons in the crude oil. digital.library.unt.edu/ark:/67531/metadc29917/
Application of Concentration, Adsorption and pH in the Precipitation of the Metal Ions of Groups II and III
In this thesis, the process involved in the precipitations and separations of the metal of Group II and Group III studied. Suggestions have also been offered whereby students can make an analysis without loosing metals in the initial precepitation. digital.library.unt.edu/ark:/67531/metadc29846/
A Chemical Analysis of the Important Soils of Dimmit County, Texas
The purpose of this study is to collect sample soils from uncontaminated horizon (by digging completely through the soil profile or strata) and provide a chemical analysis of the important soils of Dimmit county, Texas. digital.library.unt.edu/ark:/67531/metadc29922/
A Chemical Analysis of the Soils of Denton County, Texas
The purpose of this study was to analyze the different soils in Denton, Texas. For the purpose of this study, the soils of Denton County are divided into three general groups with respect to origin: 1)those formed in place by the weathering of consolidated rocks, 2) those formed from the weathering of unconsolidated rocks, and 3) alluvial soils. A chemical analysis of representative samples of Bell Clay, Kirvin fine sandy loam, and San Saba clay has been made, and shown to have a strict correlation with their respective geological origins. digital.library.unt.edu/ark:/67531/metadc29839/
A Comparative Investigation of the Water of Lake Bridgeport with Reference to Plant and Animal Life
The investigation of the waters of Lake Bridgeport is to obtain data essential for a satisfactory understanding of the physical and chemical factors on the aquatic life. These factors detremine the kinds of food available for life there. digital.library.unt.edu/ark:/67531/metadc29876/
A Comparative Quantitative Study of the Common Elements Found in the Post Oak and Willow
This thesis explores the chemical contents of post oak and willow trees. Samples of each tree are compared to determine the amount of sulfur, phosphorus, potassium, sodium, silicon, iron, aluminum, calcium, magnesium, and manganese in them. Results indicated usefulness of each tree to humans. digital.library.unt.edu/ark:/67531/metadc33245/
A Comparative Study of Errors in Chemistry and English Found in Examination Papers of Freshman Chemistry
This study attempts to discover what types of errors are commonly made by students in freshman chemistry classes. It considers the errors resulting from the students' lack of knowledge of the subject taught, and errors attributed to their failure to use correct English in their expression of ideas. digital.library.unt.edu/ark:/67531/metadc29927/
A Complete Chemical Analysis of Samples Taken from the Three Artesian Waters of Denton County
The purpose of this study was to determine the chemical content of Denton County's (Texas) water. Based on the analysis of the three samples, the water of Denton County is classed as poor for irrigation. digital.library.unt.edu/ark:/67531/metadc29825/
Determination of Nitrogen, Phosphorus, and Potassium in Various Plants
This study attempted to form some conception, through the analysis of a representative group of plants in the vicinity of Denton, of the amount of the three essential elements in the leaves as compared with the amount in the woody portions. The comparison of leaf with stem as to the quantity of nitrogen, phosphorus, and potassium is explained. digital.library.unt.edu/ark:/67531/metadc29915/
Electrodeposit of Nickel
The purpose of this study is to investigate the varying conditions in types of solutions, concentrations of solutions, hydrogen-ion concentration, current densities and potentials in the electro deposition of nickel. digital.library.unt.edu/ark:/67531/metadc29871/
An Experimental Study of the Electrodeposition of Lead
This thesis aimed to study some of the general principles underlying electrodeposition together with experimental facts regarding the effects of changing constituents of the plating solutions, variations in hydrogen-ion concentrations, and variation in current density used in the electrodeposition of lead. digital.library.unt.edu/ark:/67531/metadc29849/
Mercury-Sensitized Photochemical Action on a Mixture of Isobutane and Isobutene
This study investigated mercury-sensitized photochemical action on a mixture of isobutane and isobutene. Flow runs of isobutane-isobutene 3.2.1 mercury-saturated gases illuminated with unfiltered radiation of mercury vapor lamp gave no detectable change to hydrocarbons heavier than C4 at reaction tempratures of 27C. and 99C. digital.library.unt.edu/ark:/67531/metadc29933/
Molecular Dimensions
This study attempts to calculate the areas of the cross section and diameter of the CH3 group, COOH group, the length of the carbon chain, and the longtiudinal distance between carbon atoms for each of the three acids. It also attempts to develop a method of measuring the effective diameter of molecules of gases. Equations for these terms as given by MacDougall and experiments were performed and the data applied to the equation. digital.library.unt.edu/ark:/67531/metadc29924/
A Physical and Chemical Investigation of Eagle Mountain Lake with Reference to Biological Productivity
The purpose of this investigation is to attempt by correlation of chemical-physical factors to ascertain if any one of the necessary features might act as a factor limiting growth and reproduction of either plants or animals. The body of water used in this investigation is Eagle Mountain Lake, a reservoirs approximately five years of age. digital.library.unt.edu/ark:/67531/metadc29930/
A Quantitative Chemical Examination of Surface Well Water from the Three Principal Geological Divisions of Denton County
A sample of the surface-well water was taken from an area of the predominating soil of each of the three geological regions of Denton County, Texas, and a chemical analysis of each sample was made. This thesis deals with the area from which the samples were taken, the methods of analysis used, and the results of the analysis. digital.library.unt.edu/ark:/67531/metadc29843/
A Quantitative Study of the Common Metals Found in the Oak and the Pine
The purpose of this study is to determine the amounts of the element sulfur, phosphorus, sodium, potassium, silicon, iron, aluminium, calcium, magnessium, and manganess found in the roots, hearts, sap, leaves, and bark of two plants, the short leaf pine and the blackjack oak. digital.library.unt.edu/ark:/67531/metadc29923/
The Rate of Natural Fermentation of Various Solutions with Regard to Temperature
The purpose of this study is to investigate the rate of natural fermentation of solutions at different temperatures. Whatever microorganisms that chanced to be present in the air and that chanced to fall into the inoculating medium are the ones which brought about fermentation when transferred to the fermentable solution. digital.library.unt.edu/ark:/67531/metadc29919/
To Determine Objectives from the Constitution Preamble, Children's Charter and Social-economic Goals of America, and to Recommend a General Science Curriculum Development to Conform Therto
In this elementary science curriculum development effort, concepts are used as tools in the realization of objectives, but they are not objectives in themselves. digital.library.unt.edu/ark:/67531/metadc29875/