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