chemical properties of calcium metal in nigeria

Comparative study of the chemical composition and mineral

Jul 01, 2008· The results of the physical properties of oil extracts from the seeds investigated are shown in Table 2.The colours of the oils are yellow. Their state at room temperature 28 ± 2 °C was generally liquid.The refractive indices of the oils are 1.452 and 1.463 for A. heterophyllus and T. africana, respectively.The results of the chemical properties of the oils are presented in Table 3.

Calcium, Physical and Chemical Properties | SpringerLink

Calcium, Physical and Chemical Properties. 1. Department of Mining, Metallurgical, and Materials Engineering Laval University Quebec City Canada. Calcium is the fifth most abundant element in the earth’s crust. Some important, naturally occurring compounds are the carbonate (limestone), the sulfate, and complex silies.

Effect of Biological and Chemical Ripening Agents on the

KEY WORDS: Banana, ripening, ripening agents, postharvest losses, metal contamination ABSTRACT: The use of potentially toxic ripening agents is common in developing countries. Four ripening agents namely calcium carbide, potash, African mango and jathropha curcas leaf were used and compared with a control with no ripening agent. Result showed that

What Are the Chemical and Physical Properties of Calcium?

Aug 05, 2015· Calcium''s chemical properties are attributed to its loion in group 2 of the periodic table. As an alkaline earth metal, it is a good reducing agent for preparing other metals, such as uranium and thorium. It reacts violently when placed in water, forming calcium hydroxide, more …

WebElements Periodic Table » Calcium » the essentials

Calcium is classified chemically as one of the alkaline earth elements (that is, in Group 2 of the periodic table. The metal is rather reactive. It readily forms a white coating of calcium nitride (Ca 3 N 2) in air. It reacts with water and the metal burns with a yellow-red flame, forming largely the nitride.

Fresh concerns over chemicals for ripening fruits

May 02, 2019· Another study on Physico-chemical properties and toxic effect of fruit-ripening agent calcium carbide by researchers from the Department of Pharmacy, Guru Ram Das (PG) Institute of Management and

Calcium (Ca) - Chemical properties, Health and

Calcium is an element with atomic syol Ca, atomic nuer 20, and atomic weight 40.08. NCI Thesaurus (NCIt) Calcium appears as a silvery, soft metal that turns grayish white on exposure to air. Used in metallurgy. CAMEO Chemicals.

CHAPTER 4: ENVIRONMENTAL CHEMISTRY OF WATER Aquatic

Metal ions in aqueous solution seek to reach a state of maximum stability through chemical reactions including acid-base, Metals may exist in water reversibly bound to inorganic anions or to organic compounds as metal complexes, or they may be present as organometallic compounds containing carbon-to-metal bonds.

CHAPTER 4: ENVIRONMENTAL CHEMISTRY OF WATER Aquatic

Metal ions in aqueous solution seek to reach a state of maximum stability through chemical reactions including acid-base, Metals may exist in water reversibly bound to inorganic anions or to organic compounds as metal complexes, or they may be present as organometallic compounds containing carbon-to-metal bonds.

Baseline Levels of the Chemical Parameters in the Vicinity

analysed for the physicochemical properties and chemical speciation of Fe, Zn, Cu, Pb, Cr and Mn. A sequential extraction procedure was used that generated five different fractions (Tessier et al., 1978) into which the heavy metal could be partitioned. The total concentrations of the heavy metals in …

Calcium and its Significance in Industrial Processes

Jan 31, 2021· This metal also occurs as CaF 2, in fluorspar and as trioxosilies in bones with the teeth containing this metal in a coined form as calcium tetraoxophosphate(V). In Nigeria, this element is found in abundance as limestone in Okpilla(Edo state), Nkalagu, Calabar, Ewekoro(Ogun state), Itakpe(Kogi state) and Sokoto. Its major use in Nigeria is in the manufacture of cement.

Quality Assessment of Borehole Water used in the

Monitoring the quality of water is very essential for environmental safety. The natural water analyses for physical and chemical properties including trace element contents are very important for public health studies (Kot et al., 2000). These studies are also a main part of pollution studies in the environment.

Metals | Boundless Chemistry

The alkaline earth metals (beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. somewhat reactive metals at standard temperature and pressure. readily lose their two outermost electrons

Quality Assessment of the Changes in the Physico-Chemical

Nigeria. *1Abdullahi Zakari, 1Victoria Abiola Ikudayisi and 2Shafa’atu I. Giwa 1(Department of Pure and Industrial Chemistry, Bayero University, Kano, Nigeria) 2(Department of Biochemistry, Usmanu Danfodiyo University, Sokoto, Nigeria) Abstract: This research was earked upon to assess the changes in the physical and chemical properties of

The Analysis of the Physical and Chemical Properties of

Aug 01, 2018· Changes in the chemical and physical properties of water are one of the causes of water pollution. These changes are also an indior of water quality. The purpose of this study is to analyze water quality in the Suer M River loed in Kepanjen, Malang. Three sampling sites were selected spatially along the waterway to reflect the activities that could possibly influence the …

(PDF) Chemical composition of Sesamum indicum L. (Sesame

PDF | On Jan 1, 2010, B. abie and others published Chemical composition of Sesamum indicum L. (Sesame) grown in Southeastern Nigeria and the physicochemical properties of the seed oil. | Find

Calcium Acetate | AMERICAN ELEMENTS

Calcium Acetate is a moderately water soluble crystalline Calcium source that decomposes to calcium carbonate on heating. It is generally immediately available in most volumes. All metallic acetates are inorganic salts containing a metal ion and the acetate anion, a univalent (-1 charge) polyatomic ion composed of two carbon atoms ionically

Evaluation of the Effects of Pollution with Spent

Evaluation of the Effects of Pollution with Spent Lubriing Oil on the Physical and Chemical Properties of Soil. J. Kayode, Ph.D.*, A.A. Oyedeji, B.Sc., and O

Calcium - Simple English Wikipedia, the free encyclopedia

Calcium is a chemical element.Its syol on the periodic table (a list of all the elements) is Ca.Its atomic nuer is 20. (The atomic nuer says where Calcium sits in the periodic table.) It has 20 protons and 20 electrons (if is an atom, see ion).The most common isotopes are Ca-40 and Ca-44. Its mass nuer is about 40.08. Calcium is very important in the human body, for making bones and

Chemical and physical characteristics of calcium, its

The char­ac­ter­is­tics of cal­ci­um de­pend on the ar­range­ment of its crys­tal struc­ture, which ex­ist in two types – cu­bic face-cen­tered and body-cen­tered. The type of bond in the mol­e­cule of cal­ci­um is metal­lic. Nat­u­ral sources of cal­ci­um: ap­atites;

Calcium ion | Ca+2 - PubChem

2004-09-16. Calcium ion is the metabolically-active portion of calcium, not bound to proteins, circulating in the blood. NCI Thesaurus (NCIt) Calcium (2+) is a calcium ion, a divalent metal ion and a monoatomic diion. It has a role as a human metabolite and a cofactor.

Calcium - Element Data, Properties, Uses, and Interesting

Properties Of Calcium. The element is the fifth most abundant metal in the planet’s crust (4.1%). Important isotopes of calcium include 48 Ca, 46 Ca, 44 Ca, 43 Ca, 42 Ca, and 40 Ca. Traced in large amounts as gypsum (calcium sulfate), limestone (calcium carbonate), apatite (calcium chloro- or fluoro-phosphate) and fluorite (calcium fluoride).

Metals | Boundless Chemistry

The alkaline earth metals (beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. somewhat reactive metals at standard temperature and pressure. readily lose their two outermost electrons

WebElements Periodic Table » Calcium » the essentials

Stalagmites and stalactites contain calcium carbonate (CaCO 3). Calcium carbonate is the basis of the cement industry. Calcium is classified chemically as one of the alkaline earth elements (that is, in Group 2 of the periodic table. The metal is rather reactive. It readily forms a white coating of calcium nitride (Ca 3 N 2) in air. It reacts with water and the metal burns with a yellow-red flame, forming largely the nitride.

Calcium oxide. physical, thermal and chemical properties

Chemical Properties of Calcium Oxide. Calcium oxide (formula CaO) is the main oxide. Therefore, it can: - dissolve in water (H2O) with the release of energy. This forms calcium hydroxide. This reaction looks like this: CaO (calcium oxide) + H2O (water) = Ca (OH) 2 (calcium hydroxide) + 63.7 kJ / mol; - React with acids and acid oxides.

Calcium - Simple English Wikipedia, the free encyclopedia

Calcium is a chemical element.Its syol on the periodic table (a list of all the elements) is Ca.Its atomic nuer is 20. (The atomic nuer says where Calcium sits in the periodic table.) It has 20 protons and 20 electrons (if is an atom, see ion).The most common isotopes are Ca-40 and Ca-44. Its mass nuer is about 40.08. Calcium is very important in the human body, for making bones and

Calcium - Element Data, Properties, Uses, and Interesting

Properties Of Calcium. The element is the fifth most abundant metal in the planet’s crust (4.1%). Important isotopes of calcium include 48 Ca, 46 Ca, 44 Ca, 43 Ca, 42 Ca, and 40 Ca. Traced in large amounts as gypsum (calcium sulfate), limestone (calcium carbonate), apatite (calcium chloro- or fluoro-phosphate) and fluorite (calcium fluoride).