Essays Tagged: "oxygen atom"

Ozone, Acid rain, and Solid Waste polution in Newfoundland, Canada.

Ozone (O3) is a molecule consisting of three oxygen atoms, similar to the oxygen we breathe (O2), however oxygen consists of only two oxygen atom ... here, a region high up in the upper atmosphere, light rays are responsible for the breaking down of oxygen (O2), breathable oxygen into its two separate oxygen atoms. Lone oxygen atoms are markedly re ... ble oxygen into its two separate oxygen atoms. Lone oxygen atoms are markedly reactive. When a lone oxygen atom comes into contact with a breathable oxygen molecule (O2) it combines to form ozone (O3) ...

(15 pages) 168 2 4.2 Nov/1996

Subjects: Science Essays > Atmospheric Sciences

Water: The Genesis of Life

le structure of H2O is the source of all water's properties. With two hydrogen atoms sticking to an oxygen atom in a tetrahedron shape, water is considered as a polar molecule. Because oxygen is very ... molecule. Because oxygen is very electronegative, it pulls hydrogen's electrons towards it, causing oxygen to become partial negative. The hydrogen atoms then will have fewer electrons towards its own ...

(3 pages) 99 0 4.4 Feb/2004

Subjects: Science Essays > Biochemistry

Gas Chromatography essay

very differently to surfaces. For example, water will condense on a cold glass, but just the single oxygen atom in the air will not. This is because the bonds with glass that oxygen can make are too w ... he air will not. This is because the bonds with glass that oxygen can make are too weak to hold the oxygen there.In gas chromatography molecules are forced to pass through a porous medium, which acts ...

(2 pages) 41 0 5.0 Apr/2004

Subjects: Science Essays

Water and It's Pollution

ed in isolation, the water molecule is deceptively simple. Its tow hydrogen atoms are joined to the oxygen atom by single covalent bonds. Because oxygen is more electronegative than hydrogen, the elec ... more electronegative than hydrogen, the electrons of the polar bonds spend more time closer to the oxygen atom. In other words, the bonds that hold together the atoms in a water molecule are polar co ...

(12 pages) 186 1 4.2 Apr/2004

Subjects: Science Essays > Atmospheric Sciences

Photosynthesis and Cellular Respiration

to replace the electron lost. This reaction splits a water molecule into two hydrogen ions and one oxygen atom. The oxygen atom immediately joins another oxygen atom to form O2 and this is where oxyg ... onated by the nonprotein components. Along the chain, ATP is created. At the "bottom" of the chain, oxygen is left over and there are hydrogen waiting at the bottom. The oxygen joins with the hydrogen ...

(3 pages) 121 1 4.0 May/2004

Subjects: Science Essays > Biology > Plant Biology

The Biological importance of water

the earth is covered in water.Water itself is a simple molecule made up of 2 hydrogen atoms and one oxygen atom, H20. The hydrogen and oxygen atoms are bonded covalently as shown in the diagram of wat ... r's electron structure. Water is not a linear molecule, the two hydrogen atoms form a bond with the oxygen at the angle of 104.5o.Diagram of water's electron structureCovalent bonds are formed by shar ...

(6 pages) 55 0 4.3 Mar/2005

Subjects: Science Essays > Biology

Hydrogen Bonding Essay.

it can be viewed that the three most electronegative elements in the periodical table are nitrogen, oxygen and fluorine. These are also called heteroatoms. The heteroatoms have a partial negative char ... ally stronger than most bonds bar covalent bonds.Water:Bonding within water molecules occur between oxygen and hydrogen. These covalent bonds mean that the electrons are shared between the oxygen and ...

(3 pages) 31 1 4.0 Sep/2005

Subjects: Science Essays > Chemistry

The Importance of Water to Life on Earth.

arth's successful ecosystem and how important it is to us today.Each water molecule consists of one oxygen atom and two hydrogen atoms. The oxygen atom bears a slight electronegative charge while hydr ... ore positive one. Because opposite charges attract, the water molecules are drawn together. When an oxygen atom is linked to a neighboring molecule's hydrogen atom, a bond called a hydrogen bond is fo ...

(3 pages) 35 0 3.0 Jan/2006

Subjects: Humanities Essays > Health & Medicine


Carbohydrates are any of a large group of compounds in which hydrogen and oxygen, in the proportions in which they exist in water, are combined with carbon. Carbohydrates as ... or a ketone group. The most important is glucose.Two monosaccharide molecules joined together by an oxygen atom, with the elimination of a molecule of water, yield a disaccharide, of which the most im ...

(1 pages) 48 0 0.0 Mar/2006

Subjects: Science Essays > Biology

Properties of water and their importance to the natural world

ichard Almanac, 1746)Water is a polar molecule with covalent bonding between the electronegative oxygen atom and the hydrogen atoms. Plainly stated, polarity refers to how polar a chemical bond is. ... ity is electrical, slightly positive hydrogen of one molecule is attracted to the slightly negative oxygen of a nearby molecule. The two molecules are thus held together by a hydrogen bond. Each wate ...

(3 pages) 59 0 5.0 Apr/2006

Subjects: Science Essays > Biology

Compounds And Reactions

s. Examples of this is two chlorine atoms joining, or the atoms of 3 hydrogen atoms joining with an oxygen atom to form water.* Metallic bonds are formed by two metal atoms. Metallic bonds are the str ...

(1 pages) 20 0 1.0 Apr/2006

Subjects: Science Essays > Chemistry

All About Water

to water because polar molecules will dissolve other polar molecules. Hydrogen atoms attract to the oxygen atom because of hydrogen bonds. Water changes temperature slowly because it resists temperatu ... iffusion rate will also increase. Dynamic equilibrium occurs in biological substances. For example, oxygen diffuses into the capillaries of the lungs. There is a higher concentration of oxygen in the ...

(2 pages) 34 1 4.2 May/2006

Subjects: Science Essays > Biology

Chemestry Notes: - development of periodic table, organization of elements, atomic structure, and modern periodic table, isotopes, summary of chapter

in units formerly based on the mass of one hydrogen atom taken as a unit or on 1/16 the mass of one oxygen atom, but after 1961 based on 1/12 the mass of the carbon-12 atom.Isotope: either of two or m ...

(3 pages) 18 0 0.0 Oct/2006

Subjects: Science Essays > Chemistry


0 Cannizarro used Avogadro's hypothesis to develop a set of atomic weight, weighing 1/16 that of an oxygen atom. Over the next one hundred years, more accurate estimates of Avogadro's number were made ...

(1 pages) 1466 0 0.0 Feb/2008

Subjects: Science Essays > Chemistry

Lewis Acids and Bases

o, aluminum chloride is Lewis acid and dimethyl ether is Lewis base. A curved arrow originates from oxygen atom and point to aluminum atom. The initial product of the acid-base reaction is aluminum di ...

(1 pages) 8 0 0.0 Feb/2008

Subjects: Science Essays > Chemistry

Biological Importance of Water

ity to one another, making water very dense. In addition, as a result of the attractive forces, the oxygen and hydrogen atoms form hydrogen bonds. Since the oxygen atom has two pairs of nonbonding ele ... drogen atoms form hydrogen bonds. Since the oxygen atom has two pairs of nonbonding electrons, each oxygen in a single molecule can form H-bonds with two hydrogens. Figures on the next page show such ...

(2 pages) 13 0 3.0 Mar/2008

Subjects: Science Essays > Biology


The water molecules in the food (though overall hold a neutral charge) contain a slightly negative oxygen atom and two slightly positive hydrogen atoms. When the microwaves hit the water molecules, t ... generally well contained. Simply switching off the oven and allowing the fire to consume available oxygen with the door closed will typically contain damage to the oven itself.Any metal or conductive ...

(6 pages) 15 0 5.0 Sep/2008

Subjects: Science Essays > Physics

Were Influenced Throughout Time and Challenged.

onstituent of the universe is hydrogen, which makes up 2 of the 3 atoms in water (H2O). The missing oxygen atom was added when earth formed. It is believed by scientists that water is prerequisite to ...

(9 pages) 27 0 3.0 Mar/2010

Subjects: Science Essays > Biology