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The branch of science that deals with the study of the composition, structure, and properties of matter and the changes that matter undergoes. Chemistry
A branch foundational to the other areas of chemistry, deals with applying the theories of physics to the study of the reactions and properties in matter. Physical Chemistry
The study of substances which are compounds of carbon. Organic Chemistry
The study of the substances which are chemical combinations of elements other than carbon. Inorganic Chemistry
The branch of chemistry concerned with living things. Biochemistry
The study of substances that are present in materials and how much of each substance is present. Analytical Chemistry
A collection of compatible, related units that can be used to measure such quantities as length, mass or weight or volume. System of Measurement
The force of gravity. Weight
The quantity of matter. Mass
Defined as mass per unit volume of a substance. Density
Consistency or reproducibility of a measurement. Precision
How close a measurement is to the actual, exact value. Accuracy
Definite shape and volume. Solid
The smallest particle of an element that retains the characteristics of the element. Atom
The temperature at which a liquid is changed into a gas. Boiling Point
A substance which can be broken down by chemical means into simpler substances. Compound
A substance which cannot be broken down into simpler means by ordinary chemical means. Element
A reaction in which the products have a higher heat energy content than the reactants. Endothermic Reaction
A quantity described as the randomness of a substance of system. Entropy
A reaction in which the products have a lower heat energy content than the reactants. Exothermic Reaction
A grouping of elemental symbols which tells not only what types of atoms compose the compound but also the number of each type of atom in one molecule of the compound. Formula
A matter that has particles that are far apart and has no definite shape or volume. Gas
The energy possessed by matter due to its motion. Kinetic Energy
The law where energy is neither created nor destroyed in chemical or physical ways. Law of Conservation of energy
The law where matter and energy can neither be created nor destroyed, only changed from one form to another. Law of Conservation of mass-energy
The law where the ratios of the masses of each element in a given compound are always the same. Law of Definite Composition
The law where two elements can combine to form more than one compound, the masses of one element that combine with a fixed amount of the other element are in a ratio of small whole numbers. Law of Multiple Proportions
A state of matter where particles are close together but have no definite shape. Liquid
A measure of the quantity of matter in an object. Mass
Two or more elements or compounds that are physically mixed. Mixture
A group of two or more atoms that are linked together by chemical bonds. Molecule
The law where every system to itself will tend toward a condition of maximum entropy or disorder. Second law of Thermodynamics
A matter that is homogenous, of definite composition, and has its own unique properties which make it different from every other substance. Substance
A negatively charged ion. Anion
The average mass of the atoms of an element in their naturally occurring abundances, relative to the carbon-12 isotope. Atomic mass
One twelfth the mass of an atom of the isotope. Atomic mass unit
The number of protons in the nucleus. Atomic number
The negative charged ray. Cathode ray
A positive charge ion. Cation
A change in which one substance becomes another substance. Chemical change
A technique used to separate components. Chromatography
The process of purifying a liquid solution by boiling it and collecting the vapor. Distillation
Negative charged subatomic particle. Electron
The process of separating mixtures by taking advantage of their differing solubilities in a given solvent. Fractional crystallization
An atom or molecule that is electrically charged because it has a different number of electrons than protons. Ion
Atoms of the same element that differ in their mass numbers. Isotopes
The sum of the number of protons and number of neutrons. Mass number
An instrument that measures the isotopes in an element. Mass spectrometer
A record of the distribution of particles in a sample mass. Mass Spectrum
A subatomic particle that has no charge. Neutron
The small,dense, central part of an atom containing all the positive charge. Nucleus
A change in physical appearance but not chemically. Physical Change!!!!!!!!!!!!
Characteristics by which one type of matter may be described, identified, or distinguished from type. Properties.
A positive charge subatomic particle. Proton
Subatomic particles of which protons, neutrons, and certain other particles are thought to be composed. Quarks
Value of 6.022 x 10 to 23rd Avogrados's number
A symbolic representation which specifies the elements present in a compound as well as the relative or actual numbers of atoms each element present. Chemical formula
A type of chemical formula that shows only the simplest ratio of atoms in a compound. Empirical formula
The simplest ratio of atoms in a molecule. Formula Unit
The mass in grams of one mole of a substance. Molar mass
The amount of a substance containing the same numbers of particles as exactly 12g of carbon 12 Mole
The formula of an actual molecule, used to represent molecular compounds. Molecular Formula
The smallest particle of pure substance. Molecule
Quantitative relationships between substances involved in chemical equations. Stoichiometry
Lowest possible temperature. Absolute ZERO
The law where equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. Avogadro Law
The law where volume of a given mass of a gas at constant pressure is directly proportional to the absolute temperature. Charles law
The law where volume of a given mass of a gas at constant temperature is inversely proportional to the pressure. Boyle law
The process in which a gas uniformly spreads throughout a larger volume by random movement and collisions. Diffusion
Created by: 1849360658