WCU Chem 103 - Exam 1 - Chapter 1
Homogeneous - ✔️✔️Consisting of 2 or more substances in the same phase; uniform
throughout
Heterogeneous - ✔️✔️does not have uniform composition throughout; its components
are easily visually distinguishable
Pure substance - ✔️✔️When separated, components of both homogeneous and
heterogeneous mixtures yield ____ ________.
Pure substance - ✔️✔️classified as elements or compounds; has well defined physical
and chemical properties
Hypothesis - ✔️✔️a tentative explanation or prediction based on experimental
observations
Law - ✔️✔️a concise verbal or mathematical statement of a behavior or a relation that
seems to be the same under the same conditions
Theory - ✔️✔️Well-tested, unifying principle that explains a body of facts and the laws
based on them; capable of suggesting new hypotheses
Science - ✔️✔️new ways of learning basic info
Technology - ✔️✔️applying science to create new things
Diatomic - ✔️✔️2 atoms per molecule
Solid - ✔️✔️has a rigid shape and fixed volume. External shape may reflect the atomic
and molecular arrangement.
Liquid - ✔️✔️has no fixed shape and may not fill a container completely. Its structure is
not well understood.
Gas - ✔️✔️State of matter that expands to fill its container completely
Matter - ✔️✔️Anything that occupies space and has mass (solid, liquid, or gas)
Mixture - ✔️✔️More than one pure substance present
Homogeneous - ✔️✔️Consisting of 2 or more substances in the same phase; uniform
throughout
Heterogeneous - ✔️✔️does not have uniform composition throughout; its components
are easily visually distinguishable
Pure substance - ✔️✔️When separated, components of both homogeneous and
heterogeneous mixtures yield ____ ________.
Pure substance - ✔️✔️classified as elements or compounds; has well defined physical
and chemical properties
Hypothesis - ✔️✔️a tentative explanation or prediction based on experimental
observations
Law - ✔️✔️a concise verbal or mathematical statement of a behavior or a relation that
seems to be the same under the same conditions
Theory - ✔️✔️Well-tested, unifying principle that explains a body of facts and the laws
based on them; capable of suggesting new hypotheses
Science - ✔️✔️new ways of learning basic info
Technology - ✔️✔️applying science to create new things
Diatomic - ✔️✔️2 atoms per molecule
Solid - ✔️✔️has a rigid shape and fixed volume. External shape may reflect the atomic
and molecular arrangement.
Liquid - ✔️✔️has no fixed shape and may not fill a container completely. Its structure is
not well understood.
Gas - ✔️✔️State of matter that expands to fill its container completely
Matter - ✔️✔️Anything that occupies space and has mass (solid, liquid, or gas)
Mixture - ✔️✔️More than one pure substance present
