TERMS
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state of matter with a definite volume and definite shape.
solid
rate of change of velocity; can be calculated by dividing the change in the velocity by the time it takes the change to occur
acceleration
state of matter with an indefinite volume and indefinite shape.
gas
attractive force between two objects that depend on the masses of the objects and the distance between them.
gravity
forces on an object that combine to give a zero net force and do not change the motion of the object.
balanced force
essential organic polymers that control the activities and reproduction of cells.
nucleic acids
class of natural or synthetic substances made up of many smaller, simpler molecules, called monomers, arranged in large chains.
polymer
gravitational force exerted on an object.
weight
state of matter with a definite volume and indefinite shape.
liquid
distance an object travels per unit of time.
speed
speed of an object at a given point in time; is constant for an object moving with constant speed, and changes with time for an object that is slowing down or speeding up.
instantaneous speed
a measure of the concentration of hydronium ions in a solution using a scale ranging from 0 to 14, with 0 being the most acidic and 14 being the most basic.
pH
transfer of thermal energy by electromagnetic waves.
radiation
large, complex, biological polymers formed from amino acid units; make up many body tissues such as muscles, tendons, hair, and fingernails.
protein
chemical reaction that requires heat energy in order to proceed.
endothermic reaction
chemical reaction that produces a precipitate, water, or a gas when two ionic compounds in solution are combined.
double displacement reaction
a net force that is directed toward the center of a curved or circular path.
centripetal force
group of biological compounds, such as sugars and starches, with twice as many hydrogen atoms as oxygen atoms.
carbohydrates
chemical equation with the same number of atoms of each element on both sides of the equation.
balanced chemical equation
a push or pull on an object.
force
stored energy an object has due to its position.
potential energy
states that the acceleration of an object is in the same direction as the net force on the object, and that the acceleration equals the net force divided by the mass.
Newton's 2nd Law of Motion
the speed and direction of a moving object.
velocity
a type of chemical reaction that occurs when a substance reacts with oxygen to produce energy in the form of heat and light.
combustion reaction
measure of the average kinetic energy of all the particles in an object.
temperature