Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

Chemistry CH2 vocab


Arrhenius: substance that increase H+ concentration when added to water

(Bronsted: a substance that donates a H+)

(Lewis Acid: a species that can donate a pair of electrons)

alkali metal

an element from Group 1A with the exception of H (I.E., Li, Na, K, Rb, Cs, and Fr)

alkaline earth metal

an element from Group 2A (Be, Mg, Ca, Sr, Ba, Ra)


hydrocarbons having the general formula C(n)H(2n+2)


one of two or more distinct forms of an element

alpha particle

a helium ion with a positive charge of +2

alpha ray

see alpha particle


an ion with a negative charge


the basic unit of an element that can enter into chemical combination

atomic ion

atom that has lost or gained one or more electrons, giving it a positive or negative charge

atomic mass

the mass of the atom given in atomic mass units (amu)

atomic mass unit

a mass exactly equal to 1/12 the mass of one carbon-12 atom

atomic number (Z)

the number of protons in the nucleus of each atom of an element

atomic weight

the average atomic mass

Beta particle

an electron

Beta ray

see beta particle

Binary (compound)

a substance that consists of just two different elements


an ion with a positive charge


elements in Group 6A (O, S, Se, Te, and Po)

Chemical formula

chemical symbols and numerical subscripts used to denote the composition of the substance

diatomic molecule

a molecule that contains two atoms


a negatively charged subatomic particle found outside the nucleus of all atoms

empirical formula

the chemical formula that conveys with the smallest possible whole numbers the ratio of combination of elements in a compound


the elements in a vertical column of the periodic table

functional group

the part of a molecule characterized by a special arrangement of atoms that is largely responsible for the chemical behavior of the parent molecule

gamma rays

high-energy radiation


the elements in a vertical column of the periodic table


the elements in Group 7A (F, Cl, Br, I, and At)


containing two or more different elements


containing atoms of only one element


a compound with a specific number of water molecules within its solid structure


a compound containing only carbon and hydrogen

inorganic compounds

compounds that do not contain carbon or that are derived from nonliving sources


atom or molecule that has lost or gained one or more electrons giving it a positive or negative charge

ionic compound

substance consisting of ions held together by electrostatic attraction

ionizable hydrogen atom

a hydrogen atom that can be lost as a hydrogen ion, H+


atoms that have the same atomic number (Z) but different mass numbers (A)


a 3d array of cations and anions

law of conservation of mass

an alternative statement of the first law of thermodynamics stating that matter can be neither created nor destroyed

law of definite proportions

different samples or a given compound always contain the same elements in the same mass ratio

law of multiple proportions

different compounds made up of the of the same elements differ in the number of atoms each kind that combine

mass number (A)

the number of neutrons and protons present in the nucleus of an atom of an element


element with a tendency to lose electrons, located left of the zigzag line on the periodic table


elements with properties intermediate between metals and nonmetals

molecular formula

a chemical formula that gives the number of atoms of each element in a molecule


a combination of two or more atoms in a specific arrangement held together by chemical bonds

monatomic ion

an ion that contains only one atom


an electrically neutral subatomic particle with a mass slightly greater than that of a proton

noble gases

elements in group 8A (He, NE, AR, Kr, De, and Rn)


element with a tendency to gain electrons, located in the upper right porition of the periodic table


protons, neutrons, and electrons


the central core of the atom that contains the protons and neutrons

organic compounds

compounds containing carbon and hydrogen, sometimes in combination with other elements such as oxygen, nitrogen, sulfur, and the halogens


an acid consisting of one or more ionizable protons and an oxoanion


a polyatomic anion that contains one or more oxygen atoms bonded to a central atom


a horizontal row of the periodic table

periodic table

a chart in which elements having similar chemical and physical properties are grouped together

polyatomic ion

molecule that has lost or gained one or more electrons giving it a positive or negative charge

polyatomic molecule

molecules containing more than two atoms

polyprotic acid

an acid with more than two ionizable protons


a positively charged particle in the nucleus of an atom


the emission and transmission of energy through space in the form of waves


the spontaneous emission of particles or radiation from unstable nuclei

structural formula

a chemical formula that shows the general arrangement of atoms within the molecule

transition elements

an element that has-or readily forms one or more ions that have-an incompletely filled d subshell

transition metals

the elements in group 1B and groups 3B to 8B

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording