Chemistry-1 EXAM REVIEW
Guarateed A+
Alkali Earth Metals - ansGroup 2, 2 electron in the outer energy level, very reactive but less reactive than alkali
metals, silver, higher densities than alkali metals; Beryllium, Magnesium, Calcium, Strontium, Barium, Radium
Alkali Metals - ansGroup 1, 1 electron in outer level, very reactive, soft, silver, shiny, low density; Lithium,
Sodium, Potassium, Rubidium, Cesium, Francium
Alloys - ansmixtures composed of two or more elements, at least one of which is a metal
Amplitude - ansthe height of a wave's crest
Anion - ansa negatively charged ion
atom - ans(physics and chemistry) the smallest component of an element having the chemical properties of the
element
atomic emission spectrum - ansthe pattern formed when light passes through a prism or diffraction grating to
separate it into the different frequencies of light it contains
Atomic Mass - ans(chemistry) the mass (in atomic mass units) of an isotope of an element
Atomic Mass Unit (amu) - ans1/12 the mass of a carbon-12 atom
Atomic Number - ansthe order of an element in Mendeleyev's table of the elements
atomic orbital - ansa region of space in which there is a high probability of finding an electron
, Atomic Radius - ansone-half the distance between the nuclei of two atoms of the same element when the
atoms are joined
Aufbau Principle - ansan electron occupies the lowest-energy orbital that can receive it
Cathode Ray - ansa beam of electrons emitted by the cathode of an electrical discharge tube
Cation - ansa positively charged ion
chemical change - ansa change that produces matter with a different composition than the original matter
Chemical Formula - ansshows the elements in the compound and the ratio of atoms
chemical property - ansthe ability of a substance to undergo a specific chemical change
chemical reaction - ansthe process by which one or more substances change to produce one or more different
substances
chemical symbol - ansa one or two letter representation of an element
compound - ansa substance made up of atoms of two or more different elements joined by chemical bonds
Coordination Number - ansthe number of ions of opposite charge that surround each ion in a crystal
Covalent Bond - ansa bond formed when atoms share one or more pairs of electrons
Dalton's Atomic Theory - ans1) elements are composed of atoms. 2) atoms of same element are identical, but
differ from other elements. 3) elements can mix together 4) atoms only change when mixed with other
Guarateed A+
Alkali Earth Metals - ansGroup 2, 2 electron in the outer energy level, very reactive but less reactive than alkali
metals, silver, higher densities than alkali metals; Beryllium, Magnesium, Calcium, Strontium, Barium, Radium
Alkali Metals - ansGroup 1, 1 electron in outer level, very reactive, soft, silver, shiny, low density; Lithium,
Sodium, Potassium, Rubidium, Cesium, Francium
Alloys - ansmixtures composed of two or more elements, at least one of which is a metal
Amplitude - ansthe height of a wave's crest
Anion - ansa negatively charged ion
atom - ans(physics and chemistry) the smallest component of an element having the chemical properties of the
element
atomic emission spectrum - ansthe pattern formed when light passes through a prism or diffraction grating to
separate it into the different frequencies of light it contains
Atomic Mass - ans(chemistry) the mass (in atomic mass units) of an isotope of an element
Atomic Mass Unit (amu) - ans1/12 the mass of a carbon-12 atom
Atomic Number - ansthe order of an element in Mendeleyev's table of the elements
atomic orbital - ansa region of space in which there is a high probability of finding an electron
, Atomic Radius - ansone-half the distance between the nuclei of two atoms of the same element when the
atoms are joined
Aufbau Principle - ansan electron occupies the lowest-energy orbital that can receive it
Cathode Ray - ansa beam of electrons emitted by the cathode of an electrical discharge tube
Cation - ansa positively charged ion
chemical change - ansa change that produces matter with a different composition than the original matter
Chemical Formula - ansshows the elements in the compound and the ratio of atoms
chemical property - ansthe ability of a substance to undergo a specific chemical change
chemical reaction - ansthe process by which one or more substances change to produce one or more different
substances
chemical symbol - ansa one or two letter representation of an element
compound - ansa substance made up of atoms of two or more different elements joined by chemical bonds
Coordination Number - ansthe number of ions of opposite charge that surround each ion in a crystal
Covalent Bond - ansa bond formed when atoms share one or more pairs of electrons
Dalton's Atomic Theory - ans1) elements are composed of atoms. 2) atoms of same element are identical, but
differ from other elements. 3) elements can mix together 4) atoms only change when mixed with other
