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Unit 1 Chapter 2

BIOLOGY

TermDefinition
Compound A substance made up of atoms of two or more different elements joined by chemical bonds
Mixture A combination of two or more substances that are not chemically combined
Solution A homogeneous mixture of two or more substances
Element A pure substance made of only one kind of atom
Base A substance that decreases the hydrogen ion concentration in a solution.
fatty acids Chains of carbon atoms bonded to hydrogen atoms
Atom Basic unit of matter
hydrogen bond Attraction between a slightly positive hydrogen atom and a slightly negative atom.
Solvent A liquid substance capable of dissolving other substances
Solute A substance that is dissolved in a solution.
Lipid Energy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen.
Monosaccharide A single sugar molecule such as glucose or fructose, the simplest type of sugar.
Nucleus Control center of the cell
Electron A subatomic particle that has a negative charge
ionic bond A chemical bond resulting from the attraction between oppositely charged ions.
Ion A charged atom
covalent bond A chemical bond that involves sharing a pair of electrons between atoms in a molecule
Molecule A group of atoms bonded together
Cohesion Attraction between molecules of the same substance
pH scale measurement system used to indicate the concentration of hydrogen ions (H+) in solution; ranges from 0 to 14
Acid any compound that forms H+ ions in solution
Ashesion Force of attraction between different kinds of molecules
Buffer Compound that prevents sharp, sudden changes in pH
Suspension A mixture in which particles can be seen and easily separated by settling or filtration
Monomer A simple compound whose molecules can join together to form polymers
Carbohydrate Compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body
Nucleotide Monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
Protein A three dimensional polymer made of monomers of amino acids.
Polymer A long molecule consisting of many similar or identical monomers linked together.
nucleic acids DNA and RNA
amino acids Building blocks of proteins
Created by: shakura122
 

 



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