• Bohr And The Periodic Table
    473 words
    Bohr's Model There are three main parts of an atom the electrons, protons and the neutrons. Each part has charge. It is rather positive, negative, or neutral. An electron always has a negative charge. Protons always have negative charges. Then finally the neutron is a neutral charge or a charge of zero. If the charge of the whole atom it zero that means there are an equal number of positive and negative pieces. An electron can be found anywhere around the nucleus, and the protons and neutrons a...
  • Hydrogen Compounds Gas Fuel
    577 words
    Hydrogen Hydrogen is a tasteless, odorless, colorless gas. Hydrogen is found in group 1 and period 1 on the periodic table. Hydrogen is classified as a nonmetal on the periodic table. The symbol for hydrogen is represented by an H, its atomic number is 1, and its atomic weight is 1. 0079. The hydrogen atom consists of one proton, which has a positive charge, and one electron, which has a negative charge. The term hydrogen comes from two Greek words meaning water-former. Henry Cavendish, an Engl...
  • Alkali Metals Sodium Compounds Potassium
    1,027 words
    The six chemical elements that are known as alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and the extremely rare radioactive substance called francium (Fr). Cesium and Francium are the most reactive elements in this group. The word alkali comes from the Arabic word al-q ili, meaning plant ashes. Plant ashes were the first source of alkali metal compounds. The alkali metals occupy the first column of the periodic table of the elements. Since these metals ...
  • Space Earth Compounds Molecules
    394 words
    Christopher Chiba has the leading idea that these space particles did in fact bring in the planet's water and atmospheric gases. These space organisms are thought to be responsible for making our earth habitable by bringing in water and gas molecules which would provide our atmosphere and oceans. Also, that the space debris was needed to build life and could have even started the first cellular processes. These space molecules could have absorbed UV-rays from the sun, helping out the weaker mole...
  • Pheromones Delude 2003
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    Pheromone Products Recent studies have suggested that pheromones alter sexual behaviour. Fragrance companies have caught on to this and are funding research on pheromones in the area specific to sexual arousal (Delude: 2003). Fragrances offered by Vogue called 'Chemical: Attraction', for both men and women, alluringly display such messages as 'Warning: Contains pheromones (wear if you dare! ) May excite wild physical attraction' (Delude: 2003). Although pheromones is said to cause an almost imme...
  • Excretion And Elimination Of Toxicants And Their Metabolites
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    Excretion and Elimination of Toxicants and their Metabolites The first topic that was covered by this chapter was the excretion of wastes by the Renal system. The first step that occurs in the kidney deals with the nephron, which is the functional unit of the kidney. In the glomerulus the formation of urine begins with the passive filtration of plasma through the pores that are found in the glomerulus. The plasma is forced through these pores by hydrostatic pressure. The only things that determi...
  • Order To Predict How Differences Molecules Purpose Chart
    628 words
    Kids are great. they grow strong and big if they drink milk. Ann Marie Wilbur December 17, 2001 Partners: Rachael Smith and Scott Wheeler nn Marie Wilbur December 17, 2001 Partners: Rachael Smith and Scott Wheeler Molecules and Their Shapes Purpose: The purpose of this lab was to build models in order to predict how differences in bonding orbitals and sizes of atoms affect the shapes of molecules. This way we will be able to predict which molecules have dipole moments. Procedure: The first thing...
  • Ionic And Covalent Compounds
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    Lab: Ionic and Covalent Compounds Pre-Lab 1. List the properties of ionic compounds. - Solids at room temperature. - Soluble in water. - Conduct electricity (while in solution). - Very high melting and boiling points. 2. List the properties of covalent compounds. - Solids, liquids, or gases at room temperature. - May or may not be soluble in water. - Most do not conduct electricity (except for acids) - Low melting and boiling points. 3. Give the name and formula for: a) 3 ionic compounds NaCl-...
  • Bonding And Elements Boiling Points
    465 words
    Element a substance which cannot be broken down into two or more substances by any means. Only contains one type of atom. Compound a substance in which atoms of two or more elements have been chemically combined. Ionic Bonding. Metals bonding with non-metals. Involves transfer of electrons from metal to non-metal, so that both species obtain full outer shell electron configurations (Noble gas configuration)... Metals lose electrons to form positive ions (Cations)... Non-metals gain electrons to...
  • Organic Chemistry Covalent Bond
    277 words
    Homologous Series: An homologous series is a set of compounds whose components differ by a single repeating functional group. In the case of (straight chain) alkanes, CH 2. Their general formula is Ch 2 n+2. The chemical properties of the individual members of an homologous series are similar and they show a gradual change in physical properties. Hydrocarbons: Compounds containing only hydrogen and carbon. There are three types alkanes, alkenes and alkyne's. A saturated molecule contains single...
  • Sodium Soda Compounds Pure
    392 words
    Life could not exist without compounds of sodium. These compounds hold water in body tissues, and a severe deficiency of sodium can cause death. Blood contains sodium compounds in solution. Sodium compounds are used in industry in the manufacture of chemicals and pharmaceuticals, in metallurgy, in sodium vapor lamps, and in the production of hundreds of every day products. One of the most common sodium compounds is table salt, or sodium chloride. In its pure form sodium is a silver-white, soft ...
  • Carbon Compounds Molecules Energy
    1,130 words
    I. Introduction A. The History of Carbon II. Occurrences in Nature A. Diamond B. Graphite C. Coal and Charcoal D. Amorphous Carbon III. Carbon Compounds A. Inorganic B. Organic IV. The Carbon Cycle. Conclusion Carbon, an element discovered before history itself, is one of the most abundant elements in the universe. It can be found in the sun, the stars, comets, and the atmospheres of most planets. There are close to ten million known carbon compounds, many thousands of which are vital to the b...
  • The Comparative Abundance Of The Elements
    537 words
    The Comparative Abundance of The Elements By Derrick Deacon- There are 92 naturally occurring elements, only 17 of them make up 99. 5% of the earth's crust (including oceans and atmosphere). - In living things (plants, animals, people) the six most abundant elements are carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur. - The universe is dominated by the elements hydrogen (83%) and helium (16%) 1. The Crust The outside of the earth is a thin crust which is approximately 20 to 40 km thick...
  • Benzene Carbon Carbon Bond
    559 words
    Benzene Benzene, C (6) H (6), is a clear, colorless, flammable liquid that is insoluble in water. Its boiling point is 80 degrees C (176 degrees F). In the past benzene was obtained from the distillation of coal in the absence of air. Today most benzene is made synthetically from petroleum products. The benzene is a closed ring of six atoms connected by bonds that resonate between single and double bonds; each carbon is also bound to a single atom. Benzene is insoluble in water but mixes in all ...
  • Organic And Biological Compounds
    338 words
    Chapter 13 Organic and Biological Compounds I. Simple Organic Compounds A. Organic Compounds 1. Most compounds that contain the element carbon are organic compounds. Ie: More than 90% of all compounds are organic compounds. 2. The word organic comes from the word organism. Ie: At one time, scientists assumed that only living organisms could produce organic compounds. B. Hydrocarbons 1. The chemical formula to methane is CH 4. Ie: Found in natural gas used by most people. 2. Hydrocarbons contai...
  • Discussion On Organic Compounds
    498 words
    Organic compounds are the basis of life on earth. The purpose of this discussion is research the importance of these compounds that make up life on earth. A wide variety of classes of substances, such as drugs, vitamins, plastics, natural and synthetic fibers, as well as carbohydrates, proteins, and fats, consist of organic molecules. Organic chemists determine the structures of organic molecules, study their various reactions, and develop procedures for the synthesis of organic compounds. The a...
  • Conductivity Of Streams Water Area Temperature
    335 words
    The measure of the capacity of water to allow an electrical current is called conductivity. Conductivity in streams is affected by many factors such as the elements or compounds found in the water, the temperature of the water, the geology of the area, and the pollution in the water. Each of these factors affect the conductiity in some way. Many inorganic dissolved solids increase the conductivity of water. Examples of these include: chloride, nitrate, sulfate, phosphate, sodium, magnesium, calc...
  • Organic Chemistry Carbon Compounds Compound
    1,034 words
    Organic Chemistry is the study of carbon containing compounds. Which may include numerous important compounds, just to name a few of them, are methane (natural gas), sugar, and aspirin, most biological compounds are organic. Inorganic Compounds deals with compounds found primarily in the nonliving parts of the earth which are for instance; rocks, water and air. I will be distinguishing between organic and inorganic and their characteristics. I will also be including their properties, which repr...
  • Antimony Sb Metal Skin Compounds
    257 words
    Appearance Metallic Antimony (Sb) Antimony (Sb) Appearance Metallic antimony is an extremely brittle metal of a flaky, crystalline texture. It is bluish white and has a metallic lustre. It is not acted on by air at room temperature, but burns brilliantly when heated with the formation of white fumes. It is a poor conductor of heat and electricity. Antimony and its compounds are toxic. It is found mostly with other minerals and in stibnite. In crystal form, Antimony is a yellow crystal. Hazards...
  • Antimony Sb Appearance Metallic
    251 words
    Appearance Metallic antimony is an extremely brittle metal of a flaky, crystalline texture. It is bluish white and has a metallic lustre. It is not acted on by air at room temperature, but burns brilliantly when heated with the formation of white fumes. It is a poor conductor of heat and electricity. Antimony and its compounds are toxic. It is found mostly with other minerals and in stibnite. In crystal form, Antimony is a yellow crystal. Hazards Antimony can affect you when breathed in and by ...