sublimation
Chemical Formula
a combination of chemical symbols and numbers to represent a substance
Proton
a stable particle with positive charge equal to the negative charge of an electron
Concentrated
of or relating to a solution whose dilution has been reduced
Atomic number
the number of protons in an atom's nucleus
Atoms
(physics and chemistry) the smallest component of an element having the chemical properties of the element
sublimation
(chemistry) a change directly from the solid to the gaseous state without becoming liquid
Periodic Law
(chemistry) the principle that chemical properties of the elements are periodic functions of their atomic numbers
Alkali Metals
Group 1, 1 electron in outer level, very reactive, soft, silver, shiny, low density; Lithium, Sodium, Potassium, Rubidium, Cesium, Francium
Mealloids
both metal & nonmetal characteristics; boron through astatine zig zag line
Noble gases
one of the elements of group 18 of the periodic table(helium, neon,argon, krypton, xenon, and radon); noble gases are unreactive
Diluted
reduced in strength or concentration or quality or purity
elements
simple substances that cannot be broken down into simpler substances
mixtures
two or more substances that are not chemically combined
Covalent bonds
form when electrons are shared between atoms
Solutions
homogeneous mixtures
Metals
left of the zigzag line, shiny, malleable, ductile, good conductors of electric current, good conductors of thermal energy
compounds
made up of atoms of two or more elements in fixed proportions
Alkaline-Earth Metals
metallic elements in group 2 of the periodic table which are harder than the alkali metals and are also less reactive
Isotope
one of two or more atoms with the same atomic number but with different numbers of neutrons
Chemical bonds
the attractive forces that hold atoms together
Chemical reactions
The process in which chemical bonds are broken and/or formed
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
Suspensions
a mixture in which fine particles are suspended in a fluid where they are supported by buoyancy
Precipitate
a precipitated solid substance in suspension or after settling or filtering
Synthesis Reaction
a reaction in which two or more substances combine to form a new compound
Chemical Equation
a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
Nonmetals
elements that are poor conductors of heat and electric current
Transition Metals
Groups 3-12, 1-2 electrons in the outer energy level, less reactive than alsali-earth metals, shiny, good conductor of thermal energy and electrical current, high density
Neutron
an elementary particle with 0 charge and mass about equal to a proton
Electron
an elementary particle with negative charge