Back to AI Flashcard MakerNursing /Nursing ATI TEAS 7 Test Part 8
Liquid
a fluid that has constant volume and takes the shape of the container it occupies
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Key Terms
Term
Definition
Liquid
a fluid that has constant volume and takes the shape of the container it occupies
Gas
an air-like substance that expands to fill space it is in. The molecules are far apart (cohesion is weak) and in constant motion
Plasma (chemistry)
consists of free-moving electrons, positive ions, and neutral particles. It is created when the atoms in a gas are ionized. Of the four states of matt...
Condensation
phase change from gas to liquid
Critical point
the temperature at which liquid and gas phases have the same density
Density
ration of mass to volume
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| Term | Definition |
|---|---|
Liquid | a fluid that has constant volume and takes the shape of the container it occupies |
Gas | an air-like substance that expands to fill space it is in. The molecules are far apart (cohesion is weak) and in constant motion |
Plasma (chemistry) | consists of free-moving electrons, positive ions, and neutral particles. It is created when the atoms in a gas are ionized. Of the four states of matter, it is the state of highest energy |
Condensation | phase change from gas to liquid |
Critical point | the temperature at which liquid and gas phases have the same density |
Density | ration of mass to volume |
Deposition | phase chance from a gas to a solid with out becoming a liquid first; opposite oof sublimation |
Extensive (extrinsic) properties of matter | properties that depend on the amount of matter, such as weight and volume |
Freezing | phase change from liquid to solid |
Intensive (intrinsic) properties of matter | properties that do not depend on the matter, such as mass and boiling point |
Malleability | ability of metal to be shaped |
Mass | specific number of molecules |
Phase change | occurs when a substance absorbs or releases enough energy to make the change. Includes melting, freezing, vaporization, condensation, sublimation, and deposition. Temperature remain constant during a phase change |
Phase diagram | a graph of physical states of a substance under various temperatures and pressures |
Specific heat capacity | amount energy needed to change the temperature of 1 kg of a substance by 1℃ |
Sublimation | phase change from a solid to a gas without becoming a liquid first; opposite of deposition |
Triple point | the temperature and pressure at which solid, liquid, gas phases coexist |
Vaporization | phase change from a liquid to a gas |
Bonds | strong attractive forces between elements and compounds that are continually being created and broken. Chemical reactions are the breaking and formation of chemical bonds |
Catalyst | chemical that accelerates a chemical reaction by decreasing the activation energy needed for the reaction |
Diffusion (chemistry) | passive transportation of substance. Movement from areas of high to low concentration |
Hydrophilic | structure is water-soluable |
Hydrophobic | structure is fat-soluable |
Osmosis | net flow of water across a semipermeable membrane in response to a concentration gradient. A type of diffusion |
Solution | formed when a substance , the solute, dissolves in another substance, the solvent. It is a physical process, not a chemical one |
Reagents | acids and bases |
pH scale | a numeric representation, from 0 to 14, of acidity (concentration of hydrogen ions). A neutral solution (such as water) has a pH of 7. Basic solution pH > 7. An acidic solution pH < 7. |
Experiment | a scientific procedure to test a hypothesis |
Hypothesis | An idea or theory that is not yet proven but can be tested through experimentation |
Control variable | a variable that is held constant |
Homographs | are words with different meanings that are spelled the same |
Homophones | are words with different spellings and meanings that are pronounced the same |
Colons | can introduce and item or phrase, a quotation, for list of items |
Commas | to separate two independent clauses joined by a coordinating conjunction, to separate items in a list or series |