Element
* All elements are diamagnetic, i.e., they are expelled from a magnetic field
  - either alkaline or acid
  - made up uniquely of their own atoms
  - only various groupings of hydrogen
  - exhibit characteristic spectral emission lines
  - fit into nine crystal structures
* All elements have at least some isotopes that are radioactive
  - atoms with neutrons except for one
  - several forms called isotopes
  - some physical and non-physical shape
* Any element listed on the periodic table consists of atoms.
* Every element can exist in different forms, called isotopes.
* Every element has a space in the periodic table
  - unique spectral signature
  - radioactive isotopes
* Every element is characterized by a unique mass and charge
  - made of the same kind of atom, so each element has a symbol
  - uniquely a sum of homogeneous elements
* Many elements are required in trace amounts, usually because they play a catalytic role in enzymes
  - substitutes for zinc in chemical, electronic, and pigment uses
  - crystallize with the hcp, ccp, or bcc arrangement of atoms
  - exist in nature as molecules of one or more atom
* Many elements have a different isotopic composition in some non terrestrial materials
  - composition in some nonterrestrial materials
  - multiple isotopes which are stable for weeks, years, or even billions of years
  - several different structures, called allotropes
  - unequal numbers of neutrons and protons in their nucleus
  - interact and form compounds
* Most elements absorb heat.
* Most elements are cations and are 'stuck' to soil or media particles by - electrostatic forces
  - either metals or nonmetals
  - metals, which are found on the left and toward the bottom of the periodic table
  - present as a number of isotopes
* Most elements can exist in several isotopic forms
  - interact with other elements to form compounds
  - conduct electricity
  - contain considerable fractions of many different stable isotopes
  - dissolve in seawater
  - emit x-rays when properly bombarded with electrons
  - exist as monatomic molecules, however
  - form covalent compounds
* Most elements have at least one reasonably abundant isotope whose nucleus is magnetic
  - atomic mass
  - characteristic chemical properties
  - different atomic mass
  - energy
  - magnetic properties
* Most elements have more than one isotope
  - naturally occurring isotope
  - nuclear energy
  - potential energy
* Most elements have several isotopes
  - naturally occurring isotopes
  - similar chemical properties
  - two or more isotopes
* Most elements react with elements
  - nonmetallic elements
* Some elements actually have several ionization energies
  - appear in both metallic and non-metallic forms
* Some elements are capable of ionizing into multiple oxidation states
  - ionic in one case and covalent in another case
  - isotopically unstable and spontaneously decay to more stable isotopes
  - liquids
  - more soluble in iron than in magma
  - produced in trace amounts by the decay of other elements
  - so radioactive that none of their isotopes have ever been found naturally
  - unstable and undergo radioactive decay
  - unstable, decaying via the weak interaction into other elements
* Some elements can appear in a variety of solid states
  - combine in two or more ways by using different bonding structures
  - combine with oxygen
* Some elements emit light
* Some elements exist as two atoms on their own
  - in pure form as polyatomic molecules
* Some elements have atomic numbers
  - different amounts of electrons in different atoms of the same element
  - electrons that absorb certain wavelengths or colors
* Some elements have many isomers
  - stable isotopes, and some have famous unstable ones
  - nuclei with differing numbers of neutrons
  - oxidation state and common isotope information filled in too
  - same atomic numbers
  - unique atomic numbers
  - naturally exist as diatomic molecules
  - occur in nature with only one stable isotope , such as fluorine
* Some elements react with an acid to produce a gas
  - other substances
  - spontaneously release alpha particles
* Unscramble the letters to find the name of a chemical element.
* affect functions
  - growth
* are a kind of matter that consist of atoms of only one kind
  - any substance composed solely of chemically identical atoms
  - chemical substances
  - collection of identical atoms which thus have identical chemical properties
  - color-coded as gas, fluid or radioactive
* are composed of atoms, the basic unit of matter
  - one type of atom with a spesific structure of protons
  - defined by the number of protons they possess
  - environments
  - fields delimited by spaces
  - listed in order of increasing atomic number
  - located in universes
* are made of only one kind of atom
  - up of atoms
  - naturals
  - part of sets
  - pure substances that are made of only one type of matter
  - situations
  - straight lines
  - substances made of only one kind of atom
  - the lowest form of all matter
* are the simplest pure substances
  - type of a substance
  - weather
* can be either energy or matter
  - change states when the temperature drops or rises
  - have a different number of neutrons
* circulate through the air in a gas cycle and from land to water in a sedimentary one.
* combine in certain ratios to form compounds.
* combine to form compound substances of various numbers of atoms in the molecule
* combined When hydrogen burns in the air, water is formed.
* comprise all matter at and above the atomic level.
* consist of atoms of different mass called isotopes.
* contains only one kind of atom.
* differ in vibrational through the mere change in components such as protons and electrons.
* exhibiting the largest deviations are aluminum, calcium, manganese, and silicon.
* exist as a group of different isotopes.
* fall into families which share similar chemical properties with each other.
* flow back to the environment and energy is lost to space if organisms die and decompose.
  - electron configurations of noble gases
* frequently have their highest oxidation state in the form of a binary fluoride.
* have an oxidation state of zero
  - bind energy
  - commercial purposes
  - differences
  - distinct properties and atomic structure
  - important human values
  - more than one isotope with varying numbers of neutrons
  - particular isotopes
  - small differences
* identified include molybdenum, chromium, nickel, cobalt, vanadium, tungsten and manganese.
* includes atoms.
* is Earth
  - one of xx, xy, xz, yx, yy, yz, zx, zy, zz
* is the name of the XML element that is opened with the start tag
  - element type that is opened with the start tag
* means uranium or plutonium.
* require for growth
  - plant growth
* seen in polarized light microscopy of urine are mostly birefringent crystals.
* single lens shaped piece of glass that forms part of a compound lens system.
* sink to bottoms.
* used in small amounts are nutriments known as minerals.
* usually emit a gamma-ray during nuclear decay or fission
  - occur in nature as mixtures of isotopes
* vary in the saturating power of their atoms.
+ Allotropes of carbon: Carbon
  * Allotropes are different forms of the same chemical element. All elements are made up uniquely of their own atoms. Any physical differences are because of how the atoms are joined together. Many elements show allotropy because there are a number of ways in which the atoms can be linked together. Also there are different ways in how the molecules can be arranged to make larger structures.
+ Atomic nucleus, Modern topics in nuclear physics, Spontaneous changes from one nuclide to another: nuclear decay: Nuclear physics :: Matter
  * If a nucleus has too few or too many neutrons it may be unstable, and will decay after some period of time. In this decay a neutron in the nitrogen nucleus is turned into a proton and an electron by the weak nuclear force. Many elements have multiple isotopes which are stable for weeks, years, or even billions of years.
+ Chemical element
  * Element contains only one kind of atom. The number of protons in the atoms of an element is known as that element's atomic number. For example, all atoms with 6 protons in their nuclei are of the chemical element carbon, and all atoms with 92 protons in their nuclei are of the element uranium.
  * Elements are the basic building blocks for all types of substances. When they are combined with each other, they can form molecules.