Term
|
Definition
| anything thattakes up space and has mass |
|
|
Term
|
Definition
| substance that can't be broken down to other substances by chemical reactions. |
|
|
Term
|
Definition
| elements required by organisms in small quantities. |
|
|
Term
|
Definition
| smallest unit of matter that still retains the properties of an element. |
|
|
Term
|
Definition
| neutrally charged. found in the nucleus of an atom. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| neutrons and protons tightly packed together to form a dense core at the center of the atom. |
|
|
Term
|
Definition
| unit of measurement used for atoms and subatomic particles. |
|
|
Term
|
Definition
| number of protons. written as subscript to left of symbol for element. |
|
|
Term
|
Definition
| sum of protons plus neutrons in the nuclus of an atom. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| different atomic forms of the same element. |
|
|
Term
|
Definition
| an isotope in which its nuclus decays spontaneously, giving off particles and energy. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| energy that matter stores because of its position or location. (all depends on the electrons of the atom) |
|
|
Term
|
Definition
| energy possessed by a body of motion. |
|
|
Term
|
Definition
| Levels of energy in an atom formed by electron orbitals. |
|
|
Term
|
Definition
| three dimensional space where an electron is found 90% of the time. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| outermost electron shell. |
|
|
Term
|
Definition
| sharing of a pair of valence electrons by two atoms. |
|
|
Term
|
Definition
| two or more atoms held together by covalent bonds. |
|
|
Term
|
Definition
| sharing of two pairs of valence electrons to form a molecule. |
|
|
Term
|
Definition
| when the atom has a full complement of valence electrons. |
|
|
Term
|
Definition
| notation which represents both atoms and bonding. (H-H) |
|
|
Term
|
Definition
| sijmply shows that the molecule consists of something. (H2) |
|
|
Term
|
Definition
| electrons are shared equally. |
|
|
Term
|
Definition
| bonds in which electrons are shared unequally. (electrons closer to the atom with greater electronegativity) |
|
|
Term
|
Definition
|
|
Term
|
Definition
| charged atom (or molecule). |
|
|
Term
|
Definition
|
|
Term
|
Definition
| cations and anions attract eachother. when one or more electrons are transferred from one atom to another. |
|
|
Term
|
Definition
| when a hydrogen atom covalently bonds to one electronegative atom which also attracts to another electronegative atom. |
|
|
Term
| van der Waals interactions |
|
Definition
| weak and occur only when atoms and molecules are very close together. |
|
|
Term
|
Definition
| making and breaking of chemical bonds, leading to changes in the composition of matter. |
|
|
Term
|
Definition
| starting material of a chemical reaction. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| point at which reactions offset one another exactly. |
|
|
