Ondas senoildales

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  • Publicado : 18 de octubre de 2010
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Matter is substance of the universe, has mass, and is in a gas, liquid, or solid state.
Atoms are the building blocks of matter; they are the tiniest particles of matter, which can be subdivided
Protons: Positively-charged subatomic particles of an atom. Neutrons: Subatomic particles of an atom with no charge (electrically neutral) Electrons: Negatively-charged subatomic particles of anatom This are the subatomic particles of the atom.
Orbitals are the imaginary pathways that surround the nucleus Elements: are pure substances that are formed from atoms. There are a total of 113 elements: 88 elements are naturally-occurring and 25 elements are synthetic. Molecules are chemical combinations of 2 atoms, which are structurally simple. Ex (O2, H2) Compounds are chemicalcombinations of 2 or more different elements (NaCl, KCl, MgCl2, glucose, proteins).
Chemical bonding is a process that forms molecules and compounds. Bonds result when 2 or more atoms share, donate, or accept electrons in the outermost orbital
Covalent bonds are strong bonds that form between atoms that share electrons in the outermost orbital. These bonds can create polar or nonpolar molecules.Polarity: This refers to an unequal distributions of charges across the molecules and this occurs due to the electronegativity of the atom in the molecule. Ex (H2O) Nonpolarity: this is an equal distribution of charges across the molecule which occurs due to the atom in the molecule having the same or similar electronegativity. Ex (oil fat).
Ionic bonds are relatively weak bonds that form between atomswhere electrons are transferred (donated and accepted) between the atoms. These bonds result due to ions that form following the transfer to electrons from one atom to another. Ions: are charge particles that result when electrons are donated and accepted by atoms
Hydrogen bonds are special bonds that form between a partially positive hydrogen atom and an electronegative oxygen or nitrogen atomon the same or different molecule. Hydrogen bonds are important in nature (living systems) because they allow organic molecules to form.
Salts are inorganic, ionic compounds composed of acids and bases. Salt dissolve or disassociate easily in water due to water’s polarity.
Acids are inorganic compounds that release hydrogen ions into a solution causing the pH of the solution to be less than 7.Bases are inorganic compounds that release hydroxyl ions into a solution causing the pH of the solution to be greater than 7. Ex. Ammonia, NaOH3.
PH of the blood: 7.4
Inorganic: this refers to molecules or components that lack or don’t have carbon atoms backbones. Ex (CO2, O2, and H2O).
ORGANIC MOLECULAR STRUCTURE OF LIFE: These are molecules or compounds that have a carbon atom backbone. Manyscientist believe that this molecules compound were synthesize or produce via a long chemical evolution in the prebiotic environment of early earth, which would ultimately form the building block of all living systems called cells.
Organic molecules:
CARBOHYDRATES: this is the most abundant organic compound on earth. They are composed of carbon, hydrogen and oxygen atoms. They function tosynthesis the structural elements of cells and they function as the source of chemical energy and they store energy, carbs are synthesis via photosynthesis.
Monosaccharide: this are simple sugars, they typically have a 4 to 10 carbon atom backbone, the most important monosaccharide in all life is glucose because it provide an immediate source of chemically energy in Neutral fats: the form of ATP , andit also store energy.
Disaccharides: this are the double sugars and they are form by bonding two simple sugars together this sugar typically taste sweet. Ex(Lactose (milk sugar),
Polysaccharides: this are complex sugars they are formed by bonding many simple sugar molecules together and they are link or bonded in long chains. Typically this sugars do not taste sweet.
Starch: this is the...
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