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153 Cards in this Set

  • Front
  • Back
Accuracy
the degree to which the result of a measurement, calculation, or specification conforms to the correct value or a standard
Actinide
any of the series of fifteen metallic elements from actinium (atomic number 89) to lawrencium (atomic number 103) in the periodic table.
Alkali Metals
any of the elements lithium, sodium, potassium, rubidium, cesium, and francium, occupying Group IA (1) of the periodic table.
Alkaline Earth Metals
any of the elements beryllium, magnesium, calcium, strontium, barium, and radium, occupying Group IIA (2) of the periodic table.
Aluminum
the chemical element of atomic number 13, a light silvery-gray metal.
Angular Momentum
the quantity of rotation of a body, which is the product of its moment of inertia and its angular velocity.
Quantum Number
a number that occurs in the theoretical expression for the value of some quantized property of a subatomic particle, atom, or molecule and can only have certain integral or half-integral values.
Anion
a negatively charged ion, one that would be attracted to the anode in electrolysis.
Area
a subject or range of activity or interest
Atomic Mass
the mass of an atom of a chemical element expressed in atomic mass units.
Atomic Number
The number of protons in the nucleus of an atom
Basic Units
a fundamental unit that is defined arbitrarily and not by combinations of other units.
Boiling Point
the temperature at which a liquid boils and turns to vapor.
Brittle
Hard but easily shatterd
Cation
Positively charged ion
Allotrope
each of two or more different physical forms in which an element can exist.
Alloy
a metal made by combining two or more metallic elements,
Amorphous
without a clearly defined shape or form
Atom
the basic unit of a chemical element.
Atomic Mass Unit
the mass of an atom expressed in atomic
Atomic Number
the number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element
Atomic Weight
the mass of an atom of a chemical element expressed in atomic mass units.
Balance
an even distribution of weight enabling someone or something to remain upright and steady
Beaker
a lipped cylindrical glass container for laboratory use
Bond
a strong force of attraction holding atoms together in a molecule or crystal, resulting from the sharing or transfer of electrons.
Celsius
denoting a scale of temperature on which water freezes at 0° and boils at 100° under standard conditions.
Combustion
rapid chemical combination of a substance with oxygen, involving the production of heat and light.
Compound
a substance formed from two or more elements chemically united in fixed proportions
Condensation
a reaction in which two molecules combine to form a larger molecule, producing a small molecule such as H 2 O as a byproduct.
Conservation
prevention of excessive or wasteful use of a resource.
Crystal
any solid consisting of a symmetrical, ordered, three-dimensional aggregation of atoms or molecules.
Density
the ratio of the mass of a substance to the volume of the substance.
Diffusion
the movement of particles from regions of higher density to regions of lower density.
Electron
a subatomic particle that has a negative charge
Element
a substance that cannot be separated or broken down into simpler substances by chemical means
Energy
the capacity to do work
Flask
a narrow-necked glass container, typically conical or spherical, used in a laboratory to hold reagents or samples.
Gas
an airlike fluid substance which expands freely to fill any space available, irrespective of its quantity
Heterogeneous
of or denoting a process involving substances in different phases (solid, liquid, or gaseous).
Homogeneous
of the same kind
Inert
lacking the ability or strength to move
Ion
an atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge
Isotope
an atom that has the same number of protons as other atoms of the same element do but that has a different number of neutrons.
Kelvin
the SI base unit of thermodynamic temperature, equal in magnitude to the degree Celsius.
Lattice
the energy associated with constructing a crystal lattice relative to the energy of all constituent atoms separated by infinite distances.
Liquid
having a consistency like that of water or oil
Mass
a measure of the amount of matter in an object
Metal
a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
Metalloid
an element whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
Mixture
a combination of two or more substances that are not chemically combined
Molecule
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Neutron
a subatomic particle that has no charge and that is found in the nucleus of an atom
Periodic Table
a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure
Property
a thing or things belonging to someone; possessions collectively
Proton
a subatomic particle that has a positive charge and that is found in the nucleus of an atom.
Reaction
an action performed or a feeling experienced in response to a situation or event
Solid
firm and stable in shape; not liquid or fluid
Solubility
able to be dissolved
Solution
a homogeneous mixture of two or more substances uniformly dispersed throughout a single phase
Substance
a particular kind of matter with uniform properties
Symbol
a thing that represents or stands for something else
Temperature
a measure of how hot something is.
Volume
a measure of the size of a body or region in three-dimensional space.
Data
Factual information, especially information organized for analysis or used to reason or make decisions.
Divide
to separate into parts, groups, sections, etc.
Ductile
capable of being hammered out thin, as certain metals; malleable
Electricity
the science dealing with electric charges and currents
Electromagnetic Spectra
Display of light
Electron
a subatomic particle that has a negative charge
Electron Affinity
the quantitative measure, usually given in electron-volts, of the tendency of an atom or molecule to capture an electron and to form a negative ion.
Electron Cloud
the group of electrons revolving around the nucleus of an atom; a cloudlike group of electrons
Electron Configuration Notation
Gives the number of electrons in the subshells
Electron Shielding
Shielding electrons are the electrons in the energy levels between the nucleus and the valence electrons. They are called "shielding" electrons because they "shield" the valence electrons from the force of attraction exerted by the positive charge in the nucleus.
Electronegativity
containing negative electricity; tending to migrate to the positive pole in electrolysis.
Energy Level
a comparative level of capacity for vigorous activity
Equilibrium
a state of rest or balance due to the equal action of opposing forces.
Excited Atoms
Produces light
Exponential Notation
a way of re writting a big number.
Ferrum
Iron
Freezing Point
0 Degrees in Celcius
Gram
a metric unit of mass or weight equal to 15.432 grains; one thousandth of a kilogram.
Ground States
lowest energy level
Group
Goin down in the periodic table
Halide
a chemical compound in which one of the elements is a halogen
Halogens
Any of a group of five chemically related nonmetallic elements including fluorine, chlorine, bromine, iodine, and astatine.
Helium
an inert, gaseous element present in the sun's atmosphere and in natural gas
Heterogeneous
Different
Homogeneous
Same
Hund's Rule
When electrons are put into orbitals having the same energy, degenerate orbitals, one electron is put into each orbital before putting a second electron into an orbital.
Hydrogen
a colorless, odorless, flammable gas that combines chemically with oxygen to form water
Hydroxide
a chemical compound containing the hydroxyl group.
Information
knowledge communicated or received concerning a particular fact or circumstance
Inner Transition Metals
Lanthanides, Actinides
Ionic Compound
a chemical compound of cations and anions which are held together by ionic bonds in a lattice structure
Ionic Radii
is a concept for expressing the sizes of ions in ionic crystals.
Ionic Radius
explains how atomic radii vary around the Periodic Table.
Ionic Compound
a chemical compound of cations and anions which are held together by ionic bonds in a lattice structure
Ionizatoin Energy
The ionization energy or ionization potential is the energy necessary to remove an electron from the neutral atom.
Ionic Radii
is a concept for expressing the sizes of ions in ionic crystals.
Ions
An atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons.
Ionic Radius
explains how atomic radii vary around the Periodic Table.
Ionizatoin Energy
The ionization energy or ionization potential is the energy necessary to remove an electron from the neutral atom.
Isotope
any of two or more forms of a chemical element, having the same number of protons in the nucleus
Ions
An atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons.
Kilogram
a unit of mass equal to 1000 grams
Isotope
any of two or more forms of a chemical element, having the same number of protons in the nucleus
Law of conservation of energy
the principle that in a system that does not undergo any force from outside the system, the amount of energy is constant, irrespective of its changes in form.
Kilogram
a unit of mass equal to 1000 grams
law of conservation of mass
the principle that in any closed system subjected to no external forces, the mass is constant irrespective of its changes in form; the principle that matter cannot be created or destroyed.
Law of conservation of energy
the principle that in a system that does not undergo any force from outside the system, the amount of energy is constant, irrespective of its changes in form.
Ionic Compound
a chemical compound of cations and anions which are held together by ionic bonds in a lattice structure
laW of definite proportions
law stating that every pure substance always contains the same elements combined in the same proportions by weight
Ionic Compound
a chemical compound of cations and anions which are held together by ionic bonds in a lattice structure
law of conservation of mass
the principle that in any closed system subjected to no external forces, the mass is constant irrespective of its changes in form; the principle that matter cannot be created or destroyed.
law of multiple proportions
law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation
Ionic Radii
is a concept for expressing the sizes of ions in ionic crystals.
laW of definite proportions
law stating that every pure substance always contains the same elements combined in the same proportions by weight
1st law of thermodynamics
1st-Energy can be changed from one form to another, but it cannot be created or destroyed.
Ionic Radii
is a concept for expressing the sizes of ions in ionic crystals.
Ionic Radius
explains how atomic radii vary around the Periodic Table.
2nd laW of thermodynamics
in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the initial state.
law of multiple proportions
law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation
Ionizatoin Energy
The ionization energy or ionization potential is the energy necessary to remove an electron from the neutral atom.
Ionic Radius
explains how atomic radii vary around the Periodic Table.
light
is electromagnetic radiation with a wavelength that is visible to the eye
Ions
An atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons.
Ionizatoin Energy
The ionization energy or ionization potential is the energy necessary to remove an electron from the neutral atom.
1st law of thermodynamics
1st-Energy can be changed from one form to another, but it cannot be created or destroyed.
Isotope
any of two or more forms of a chemical element, having the same number of protons in the nucleus
2nd laW of thermodynamics
in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the initial state.
Ions
An atom or a group of atoms that has acquired a net electric charge by gaining or losing one or more electrons.
Kilogram
a unit of mass equal to 1000 grams
line-emission spectra
is the amount of electromagnetic radiation of each frequency it emits when it is heated
Law of conservation of energy
the principle that in a system that does not undergo any force from outside the system, the amount of energy is constant, irrespective of its changes in form.
light
is electromagnetic radiation with a wavelength that is visible to the eye
law of conservation of mass
the principle that in any closed system subjected to no external forces, the mass is constant irrespective of its changes in form; the principle that matter cannot be created or destroyed.
Isotope
any of two or more forms of a chemical element, having the same number of protons in the nucleus
laW of definite proportions
law stating that every pure substance always contains the same elements combined in the same proportions by weight
Kilogram
a unit of mass equal to 1000 grams
Law of conservation of energy
the principle that in a system that does not undergo any force from outside the system, the amount of energy is constant, irrespective of its changes in form.
law of multiple proportions
law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation
line-emission spectra
is the amount of electromagnetic radiation of each frequency it emits when it is heated
law of conservation of mass
the principle that in any closed system subjected to no external forces, the mass is constant irrespective of its changes in form; the principle that matter cannot be created or destroyed.
1st law of thermodynamics
1st-Energy can be changed from one form to another, but it cannot be created or destroyed.
laW of definite proportions
law stating that every pure substance always contains the same elements combined in the same proportions by weight
2nd laW of thermodynamics
in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the initial state.
law of multiple proportions
law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation
light
is electromagnetic radiation with a wavelength that is visible to the eye
1st law of thermodynamics
1st-Energy can be changed from one form to another, but it cannot be created or destroyed.
line-emission spectra
is the amount of electromagnetic radiation of each frequency it emits when it is heated
2nd laW of thermodynamics
in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the initial state.
light
is electromagnetic radiation with a wavelength that is visible to the eye
line-emission spectra
is the amount of electromagnetic radiation of each frequency it emits when it is heated