Flashcards in Chapter 2 Pt 1 Deck (20):
A substance that increases the hydrogen ion concentration in a solution.
Rain, snow, or fog with a pH below 5.6.
The attraction between different kinds of molecules
The small unit of matter that retains the properties of an element
The approximate total mass of an item; Given as a whole number, this definition approximately equals the mass number. Also known as the atomic weight
The # of protons in each atom of a particular element.
A substance that decreases the hydrogen ion (H) concentration in a solution
A chemical substance that resists changes in pH by accepting hydrogen ions from or donating hydrogen ions to solutions.
A solution in which water is the solvent.
An attraction between two atoms resulting from a sharing of outer-shell electrons or the presence of opposite charges on the atoms. The bonded atoms gain complete outer electron shells.
The making and breaking of chemical bonds, leading to changes in the composition of matter.
The binding together of like molecules, often by hydrogen bonds
A substance containing two or more elements in a fixed ratio. For example, table salt (NaCl) consists of one atom of the element sodium (Na) for every atom of chlorine (Cl).
An attraction between atoms that share one or more pairs of outer-shell electrons; symbolized by a single line between the atoms
A subatomic particle with a single negative electrical charge. One or more of this item moves around the nucleus of an atom.
An energy level representing the distance of an electron from the nucleus of an atom.
The attraction of a given atom for the electrons of a covalent bond.
A substance that cannot be broken down to other substances by chemical means.
Thermal energy; the amount of energy associated with the movement of the atoms and molecules in a body of matter. This energy in its most random form.