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Chemistry Vocabulary

Water , pH, Atoms, Macromolecules

TermDefinition
Atom basic unit of matter
Element substance consisting of one type of atom
Isotope atom of an element that has a number of neutrons different from that of other atoms of the same element
compound chemical combination of two or more elements
ionic bond A bond created by the attraction between a positive and negative ion.
ion An atom that has a positive or negative charge because it is missing an electron or has an extra electron.
covalent bond a bond between two atoms in which electrons are shared. A covalent bond can either be polar or non polar.
van der waals forces Intermolecular forces of attracton
Polar molecule a molecule in which the charges are unevenly
hydrogen bonds two hydrogen atoms and one oxygen atom connected by polar covalent bonds.
cohesion an attraction between molecules of the same substance
adhesion an attraction between molecules of a different substance
solution mixture of two or more substances in which the molecules of the substances are evenly distributed
suspension mixture of water and non-dissolved materials
ph scale pH: A measure of how acidic or basic a substance is. The pH scale goes from 0 - 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.
Buffers weak acid or base that can react with strong acids or bases to help prevent sharp; sudden changes in PH
carbohydrate A sugar or starch. Carbohydrates are large molecules or polymers. Carbohydrates are made of monomers called monosaccharides. Carbohydrates are used as an energy source. Examples of carbohydrates include glucose and glycogen.
Monosacccharid singel sugar molecule
polysaccharides Large macromolecule formed from mommosacharids
lipid macromolecule made mainly from carbo and hydrogen atoms; includes fats, oils, and waxes
nucleic acids macromolecule contaning hydrogen, oxygen,nitrogen,carbon, and phosphorus
nucleotides The building block (monomer) of nucleic acids (DNA and RNA) Nucleotides are composed of a phosphate, sugar, and a nitrogen base.
proteins macromolecule that contains carbon,hydrogen, oxegen,and nitrogen; nedded by body for growth and repairing and makeingup enzymes
amino acids The monomer (building block) of a protein
Hydrophilic love water
hydrophobic fear of water
homeostasis Keeping your insides in balance; maintaining a stable internal environment. This is one of the five characteristics of life. ...
Created by: dani_g
 

 



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