ROOT WORDS USED FREQUENTLY IN CHEMISTRY root meaning electr, -i, -o electrode met, -a between, change -ane single covalent bond elem basic meter measure -ene double covalent bond empir, -o experienced mill -e, -i, -o one thousand -ion process en in, into misc mix -oid like, form equ equal mon -a, -er, -o single, one -yne triple covalent bond erg work morph, -a, -o form -meter measure exo out, outside, without neo new, recent a- not, without ferr, -o iron neutr neither acid sour, sharp fiss, -i, -ur cleft, split nom, -en, -in name alkali soda ash, alkali flu flow non not, ninth allo, -io other, different ] fract break, broken nuc, -ell, -i center alpha 1st letter of Greek alphabet gamma 3rd letter of Greek alphabet oct, -i, -o eight amin ammonia gen bear, produce, beginning orbi, -t, to circle amph, -i, -o double, on both sides glyc, -er, -o sweet oxid oxygen anti against, opposite graph, -o, -y write, writing photo light aqua water halo- salt polar, -i of the pole, polarity baro pressure hetero- other, different poly many beta 2nd letter of Greek alphabet hom, eo, -o same, alike pro forward, positive, for, in front of bi two hybrid hybrid, combination quant how much carb, -o, -on coal, carbon hydr, -a, -i, -o water radi, -a, -o, spoke, ray, radius chem chemistry hyper over, above, excessive sacchar, -o sugar co, -l, m, -n with, together hypo under, beneath sal, -i salt com with, together im not solu- dissolve conjug joined together in in, into spect see, look at cosm,-o the world or universe iso equal super above, over cry, -mo, -o cold kilo thousand syn together, with de down, without, from kine move, moving, movement therm, -o heat dens thick lip, -o fat thesis an arranging, statement di separate, double, across liqu, -e, -i fluid, liquid tran, -s across, through dis separate, apart lys, -io, -is, -io loose, loosening,breaking un not duc, -t lead macr, -o large, long vapor, -i steam, vapor e out, without, from malle, -o, -us hammer Vulcan fire mer, -e, -i,-o a part ef out, from, away Chemistry terms to know Atomic mass Atomic nucleus Atomic number Atomic theory Atomic weight Charged object Electrically neutral Electron Electron cloud Elementary particle Ion Isotope Nuclear reaction Neutron mass Energy conversion Proton Relative mass Stable Strong force Valence electrons the mass (in atomic mass units) of an isotope of an element An atom's central core, containing protons and neutrons. the order of an element in Mendeleyev's table of the elements any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles the ratio of the atomic mass of an element to half the atomic mass of carbon-12 objects with either a positive or negative electric charge. an object that has equal amounts of positive and negative charges an elementary particle with negative charge a region around the nucleus of an atom where electrons are likely to be found a particle that is less complex than an atom a particle that is electrically charged (positive or negative) one of two or more atoms with the same atomic number but with different numbers of neutrons a process that alters the energy or structure or composition of atomic nuclei 1 amu a change from one form of energy to another a stable particle with positive charge equal to the negative charge of an electron when everything is being compared to the proton mass, (ex: proton mass (kg)/neutron mass (kg)) not taking part readily in chemical change the interaction that binds protons and neutrons together in the nuclei of atoms The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds Energy the capacity of a physical system to do work Subatomic particles protons, neutrons, and electrons Actual mass The true mass of an object, as defined in terms of volume and weight Atomic bonding The linking together of atoms to form larger structures Avogardo's hypothesis Two equal volumes of gas, at same temperature and pressure, contain the same number of molecules Binary compound chemical compound composed of only two elements Chemical bond an electrical force linking atoms Chemical properties of elements how they react with other elements Covalent bond a chemical bond that involves sharing a pair of electrons between atoms in a molecule Electronegativity the tendency of an atom or radical to attract electrons in the formation of an ionic bond Electron sharing the sharing of an electron between two atoms (covalent bond) Electron transfer A electron split away from one molecule is donated to another (ionic bond) Energy sublevels the energy levels contained within a principal energy level Periodic table of the elements A display of the elements based on atomic number Ionic bond a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains to electron to form a negative ion Ionization energy the amount of energy required to remove an electron from an atom Lewis structures formulas in which atomic symbols represent nuclei and inner-shell electrons, dot-pairs or dashes between two atomic symbols represent electron pairs in covalent bonds, and dots adjacent to only one atomic symbol represent unshared electrons Main group elements Those elements occupying the s and p blocks of the periodic table. Metalloids elements that have characteristics of metals and nonmetals Metallic bond a chemical bond in which electrons are shared over many nuclei and electronic conduction occurs Outer electron electrons in the outer shell Thermal conductivity the ability of an object to transfer heat Absorbance spectrum the reflection of the two particles in an atom that are formed in the nucleus Chemical bond an electrical force linking atoms Electromagnetic radiation radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge Electron configuration the arrangement of electrons in an atom Excited state a state in which an atom has a higher potential energy than it has in its ground state Ground state the lowest energy state of an atom or other particle