A characteristic that we can observe or measure without changing the identity of the substance
Independent of the size of the sample. Temperature is a ________ because it doesn't matter how much water is in the bath, the temperature will stay the same.
The identity of a substance doesn't change while the physical properties do change. (Water that gets frozen)
The energy available from a chemical reaction. Example: the energy released in the combustion of fuel.
(1) The smallest particle of an element that has the chemical properties of the element. (2) An electrically neutral species consisting of nucleus and it's surrounding electrons.
(Z) The number of protons in the nucleus of an atom; this number determines the identity of the element and the nmber of electrons in the neutral atom.
spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer
Any one of the groups forming the s- and p-blocks of the periodic table. 1-2, 13-18 groups
(s-block, p-block, d-block, f-block) The region of the periodic table containing elements for which, according to the building-up principle, the corresponding sub-shell is currently being filled.
INNER TRANSITION METALS
A member of the f-block of the periodic table (the lanthanoids and actinoids)
ALKALINE EARTH METALS
Calcium, strontium, and barium; more informally a member of group 2 of the periodic table (the beryllium family)
(1) A substance that conducts electricity, has a metallic luster, is a malleable and ductile, forms cations, and has basic oxides. (2) consists of cations held together by a sea of electrons.
An element that has the physical appreance and properties of a metal but behaves chemically like a nonmetal.
(1) A specific combination of elements that can be separated into its elements by chemical techniques but not physical technique. (2) A substance consisting of atoms of two or more elements in a definite, unchangeable ration.
Consisting of two components, as in binary mixture and binary (ionic or molecular) compound. Examples; acetone and water (a binary mixture); HCl, CaCl₂
A compound containing the element carbon and usually hydrogen. (the carbonates are usually excluded).
An inorganic compound formed from two metals in specific proportions. Examples; NiTi, Ag₃Sn, FeCo
(1) The smallest particle of a compound that possesses the chemical properties of the compound. (2) A definate, distinct, electrically neutral group of bonded atoms. Examples: H₂, NH₃, CH₃COOH
a compound that is composed of molecules. Examples: Water, sulfur hexafluoride, benzoic acid.
A chemical formula that shows how atoms in a compound are attached to one another.
A depiction of a molecule in which atoms are represented by spheres that indicate the space occupied by each atom
A representation of molecular structure that uses tubes to indicate the lengths and distances of bonds. The ends of each tube are colored to indicate the identities of the elements forming the bond.
A Graphic image that represents a molecular structure as a surface and show the distribution of electrons in a molecule; the surface corresponds to locations with the same electron density.
ELECTROSTATIC POTENTIAL SURFACE
A molecular structure in which the net charge is calculated at each point of the density isosurface and depicted by different colors; an "elpot" surface.