Term
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Definition
| how close the measured value is to the standard or accepted value of that measurement. |
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Definition
| a substance that produces hydrogen ions in water, or is a proton donor |
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Definition
| a dye that has a certain color in an acid solution and a different color in a base solution. |
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Definition
| a substance that has metal characteristics and consists of two or more different elements |
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Definition
| a negatively charged atom |
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Definition
| determined by the mass of protons and neutrons in the atom. |
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Definition
| 1/12 the mass of a c-12 atom |
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Definition
| a region in space where electrons on an atom can be found. |
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Definition
| the number of atoms in 12g of carbom-12. 6022x10 to the 23 power |
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Definition
| a substance that releases hydroxide ions 9oh0 in water or is a proton acceptor |
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Definition
| chemical compound composed of only two elements. |
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Definition
| a substance that increases the rate of a chemical reaction, with out being changed itself in the reaction. |
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Definition
| a positively charged ion. |
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Definition
| objects made of baked clay such as vases and other forms of pottery, tile, and small sculptures. |
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Definition
| the change of substances into other substances, with different chemical composition, through a reorganization of the atoms; a chemical reaction |
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Definition
| summary of a chemical reaction using chemical formulas for reactants and products. |
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Definition
| notation that uses atomic symbols in a definite numerical proportion to convey the relative proportions of atoms of the different elements in the substance. |
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Definition
| a family on elements in the periodic table that have similar electron configurations. |
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Term
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Definition
| observed when a substance undergoes a transformation into one or more new substances |
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Term
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Definition
| a change in the arrangement of atoms or molecules to yield substances of different composition and properties |
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Definition
| procedure or chemical reaction used to identify a substance |
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Definition
| a property such as freezing-;point depression whose physical value depends on the ration of particles of solution and solvent |
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Term
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Definition
| very finely divided solid particles which will not settle out of a solution;intermediate between a suspended solid which will settle out of solution |
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Definition
| chemical reaction between a fuel and oxygen that produces heat 9 and usually, light0. |
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Term
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Definition
| a material made from two or more different type of material which contribute different properties |
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Term
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Definition
| a substance formed by a union of two or more elements in a definite proportion by weight |
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Definition
| measure of the amount of dissolved material (solute) in a solution. it can be expressed in moles of solute per liter of solution |
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Definition
| the property of transmitting heat electricity |
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Term
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Definition
| quantities that a scientist wants to remain constant. these are all the things that you will keep the same in your experiment |
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Definition
| a bond between two atoms formed by the sharing of a pair of electrons |
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Definition
| mass per unit volume of a substance |
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Definition
| a physical property describing how easy it is to pull a substance into a new permanent shape |
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Definition
| a physical property of a material to resist the deformation and return to its normal size or shape after a force has been applied to it |
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Definition
| process in which an electric current flowing through a solution or molten compound breaks that compound up into its component parts |
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Definition
| coil of wire that is wrapped around a soft iron core that is magnetized when electric current flows through it |
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Term
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Definition
| force that arises between particles with electric charge;the second strongest of the four fundamental forces |
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Term
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Definition
| full range of frequencies, from radio waves to gamma rays. that characterizes light. the low end of the spectrum is infrared radiation (heat), and passes through the colors of visual light from red through violet, through ultraviolet radiation, x rays and gamma rays |
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Term
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Definition
| a subatomic particle that occurs outside of the nucleus and has a charge of -1 |
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Term
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Definition
| the arrangement of electrons in atomic orbitals; for example 1s to 2nd power 2s to 2nd power 3p to 3rd power |
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Definition
| the path of the electron in it =s motion around the nucleus of bohrs hydrogen atom |
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Term
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Definition
| a substance in which all of the atoms have the same atomic numer |
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Definition
| a colloid or colloidal dispersion of one liquid suspended in another |
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Definition
| reaction that absorbs heat from its surroundings as the reaction proceeds |
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Term
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Definition
| a reaction during which chemical energy is released in the form of heat |
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Term
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Definition
| the process whereby the nucleus of a particular heavy element splits into (generally) tow nuclei of lighter elements, with the release of substantial amounts of energy |
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Definition
| an experimental technique or process in identifying a metal from its characteristic flame color |
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Definition
| the number of back and forth cycles per second, in a wave or wave like process |
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Term
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Definition
| a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy |
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Term
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Definition
| a metric unit of weight equal to one thousandth of a kilogram one gram |
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Definition
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Definition
| a metric unit of weight equal to one thousandth of a kilogram |
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Definition
| elements that constitute group vii of the periodic table of elements:fluorine chlorine,bromine,iodine and astatine |
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Definition
| a substance having different characteristics in different locations |
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Term
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Definition
| an organic compound containing only carbon and hydrogen |
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Definition
| electromagnetic radiation with wavelengths greater than those of the visible light but shorter than those of microwaves it is associated with heat energy |
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Definition
| any compound that does not contain carbon |
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Term
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Definition
| the resources that are necessary to carry out activities of a system |
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Term
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Definition
| a substance that does not dissolve in a solvent to give a reasonable concentration |
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Definition
| an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more elctrons |
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Term
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Definition
| an attraction between oppositely charged ions |
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Definition
| a compound consisting of a positive and negative ions |
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Definition
| the energy required to remove an electron from a gaseous atom at ground state |
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Definition
| atoms of the same element but different atomic masses dude to different number of neutrons |
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Definition
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Definition
| a form of energy related to the motion of a particle (ke=a/2mv to the 2nd power) |
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Term
| law of definite proportions |
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Definition
| different samples of a pure compound always contain the same elements in the same proportions by mass |
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Definition
| the solid, outer portion of the earths crust coupled to the rigid upper mantle |
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Definition
| the light reflective quality of fiber exhibited in shine and gloss |
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Definition
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Definition
| a huge molecule made up of thousands of atoms |
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Definition
| the property of a material to be able to be hammered in to various shapes without breaking |
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Term
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Definition
| the variable you will change in your experiment |
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Definition
| the property of a body that causes it to have wight in gravitational field |
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Term
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Definition
| that which has mass and occupies space |
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Term
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Definition
| classes of materials that exhibit properties of conductivity , malleability, and ductility, these elements tend to lose electrons to form positive ions |
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Definition
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Definition
| a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding) |
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Definition
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Definition
| a collection of objects that contains avagadros number of objects. (6.02x10 to the 23rd power) |
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Term
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Definition
| two or more atoms bond together by sharing electrons (covalent bond) |
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Term
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Definition
| the process of an acid and base reacting to form water and salt |
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Term
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Definition
| neutral subatomic particle located in the nuclei of the atom. has a mass of 1.675x 10 to the -24th power g |
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Term
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Definition
| unit of force, the force which , when applied to one kilogram mass, causes an acceleration of 1 meter/sec2 |
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Definition
| an element that forms approximately 79% of air by volume. atomic number 14 |
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Term
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Definition
| any of a group of rare gases that include helium, neon, argon, krypton,xenon, and radon and that exhibit great chemical stability group 18 on the periodic table |
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Term
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Definition
| classes of materials that do not exhibit properties of conductivity, malleability, and ductility, these elements tend to gain electrons to form negative ions. the oxides of these elements are acidic |
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Term
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Definition
| the temperature at which the vapor pressure of the pure liquid equals 1 atm |
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Term
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Definition
| the characteristic temperature, at 1atm, at which material changes from a liquid state to its solid state |
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Term
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Definition
| the characteristic temperature, at 1atm, at which material changes from a solid state to its liquid state |
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Term
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Definition
| energy or power produced by nuclear reactions (fusion or fission) |
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Term
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Definition
| that force exerted by subatomic particles that is responsible for form, shape, and motion of particles in the atom |
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Term
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Definition
| the very dense core of the atom that contains the neutrons and protons |
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Definition
| a molecular compound of carbon other than carbonates and cyanides and carbon dioxide |
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Term
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Definition
| the process of a substance losing one or more electrons |
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Term
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Definition
| a number assigned to an element in a compound designating the number of electrons that element has lost gained, or shared in forming that compound |
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Term
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Definition
| a horizontal row of elements in the periodic table |
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Term
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Definition
| a quantity used to represent the acidity of a solution based on the concentration of hydrogen ions |
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Term
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Definition
| the conversion of a substance from one state to another state at a specific temperature and pressure |
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Term
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Definition
| a change that involves changes in the state or form of a substance not does not cause an change in the chemical composition |
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Term
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Definition
| a property that can be measured without causing a change in the substances chemical composition |
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Term
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Definition
| a proportionality constant of the energy of a photon to its frequency, e=hf=6.62x 10 the -34th power j/s |
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Term
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Definition
| an ion that consists of 2 or more atoms that are covalently bonded and have either a positive or negative charge |
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Term
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Definition
| a substance that is a macromolecule consisting of many similar small molecules (monomers) linked together |
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Term
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Definition
| a chemical reaction hat converts small molecules (monomers) into much larger molecules (polymers) |
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Term
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Definition
| stored energy of a material a result of its position in an electric, magnetic, or gravitational field pe=mgh |
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Term
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Definition
| an insoluble solid formed in a liquid solution as a result of some chemical reactions |
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Term
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Definition
| the closeness of agreement of several measurements of the same quantity |
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Term
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Definition
| the substance produced in a chemical reaction |
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Term
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Definition
| a positively charged subatomic particle contained in the nucleus of an atom. the charge is +1 and a mass of 1.673x10 to the -24th power g |
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Term
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Definition
| an element or compound that has a defined composition and properties |
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Term
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Definition
| a substance that contains only one kind of particle |
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Term
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Definition
| an atom that has an unstable nuclei and will emit alpha, positron, or beta particles in order to achieve more stable nuclei |
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Definition
| the starting materials in a chemical reaction |
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Term
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Definition
| a property that describes how readily a material will react with other materials |
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Term
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Definition
| a process in which the substance under consideration gains electron(s) |
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Term
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Definition
| this is the variable that changes as a result of the changes in the manipulated the variable |
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Term
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Definition
| the measured quantity that changes when you change the manipulated variable in a scientific investigation |
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Term
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Definition
| the maximum amount of solution that can be dissolved at a given temperature and pressure |
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Term
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Definition
| the substance that dissolves in solvent to form a solution |
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Term
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Definition
| a homogeneous mixture of two or more substances |
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Term
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Definition
| the substance in which a solute dissolves to form a solution |
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Term
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Definition
| the changed of state of a solid material to a gas without going through the liquid state |
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Term
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Definition
| a solution containing more solute than a saturated solution and therefore not at equilibrium.this solution is not stable and cannot be maintained indefinitely |
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Term
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Definition
| changing the nature of the reactants into smaller particles increases the surface exposed to react |
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Term
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Definition
| heterogeneous mixture that contains fine solid or liquid particles in a fluid that will settle out spontaneously |
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Term
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Definition
| the measure of average kinetic energy of all the particles of material |
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Term
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Definition
| the characteristics of the surface of a material, like how smooth, rough, or coarse it is |
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Term
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Definition
| the scattering of a light beam as it passes through a colloid |
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Term
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Definition
| the property of how consistent a material is throughout |
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Definition
| the outermost electrons of an atom. these electrons are involved in chemical bonding of atoms |
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Term
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Definition
| the change of state from a liquid to a gas |
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Term
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Definition
| a property related to the resistance of a fluid to flow |
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Definition
| the distance measured from crest to crest of one complete wave or cycle |
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