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13 Cards in this Set

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  • Back
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The temperature at which an object's energy is minimal.
What is absolute zero?
-273.15 degrees C/ -459.67degrees F
having no thermal energy
The change in velocity divided by the time interval in which the change occurred.
What is acceleration? (259)
"pedal to the metal"
The extent to which a measurement approaches the true value.
What is accuracy?
Conforming closely to a standard.
A substance that donates protons, H, to form hydronium ions, H3O, when dissolve in water.
What is an acid?
turns litmus paper red, forms salts by reactiing with bases or metal & tastes sour.
Any precipation that has an unusually high concentration of sulfuric or nitric acids resulting from chemical pollution of the air. (199)
What is acid rain?
causes death of fir trees in higher elevations
A large body of air with uniform temperature and moisture content.
What is an air mass? (613)
small horizontal variations of pressure, temperature, and moisture
The organic nutrients which contain carbon, hydrogen, and oxygen.
What are carbohydrates? (134)
Provides nutrients to cells of living things, made of glucose, ex. starchy foods
The negative terminal of a battery.
What is a cathode? (5)
got its name from the rod connected to the negative terminal of the electricity source, color coded black
The point on a body where all weight is equally balanced all around; the point where gravity seems to pull.
What is the center of gravity? (?)
a point at or near the body where the gravitational potential energy is equal to that of a single particle of the s ame mass located at that point and through which the gravitational forces on the componet particles of the body acts
The endergy created in a chemical reaction. (151))
What is chemical energy? (151)
The total energy before the reaction is always equal to the total energy of the products and their surroundings. Energy can neither be created nor destroyed - "law of conservation of energy"
The study of matter and the changes matter undergoes.
What is chemistry? (38)
"what things are made of and how things change"
A closed loop path of conduction through which an electric current flows.
What is a circuit? (446-452)
electrical device connected so that it provides one or more complete paths for
the movement of charges, series or parrallel
The attraction between particles of the same substance.
What is cohesion? (?)
to cling together