Create an account
a change from one state (solid or liquid or gas) to another without a change in chemical composition
a chemical reaction in which two or more simple substances combine to form a new, more complex substance
single replacement reactions
element reacting with a compound atom of the single element replaces an element in the compound
acid base reaction
When an acid and base mix together, neutralize one another's properties, and form a salt.
a chemical reaction in which an acid and a base interact with the formation of a salt
any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water
a range of numbers used to describe how acidic or basic a solution is; ranges from 0 (most acidic) to 14 (most basic)
a substance that initiates or accelerates a chemical reaction without itself being affected
When molecules are moving form greater to lesser concentration in an attempt to reach a balanced state or ao state of.
An organic compound with a carbonyl group of which the carbon atom is bonded to two other carbons.
an expanded molecular formula showing the arrangement of atoms within the molecule
an organic compound that is made of one or more chains of amino acids and that is a principal component of all cells
a chemical reaction in which large molecules are formed by removing water from smaller molecules and joining them together
a chemical process in which a compound is broken down and changed into other compounds by taking up the elements of water
conservation of momentum
the law that states that the total momentum in a system of interacting objects always remains the same
newtons first law
an object at rest will stay at rest, an object that is moving will stay moving unless disturbed by an unbalanced force.
the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force
newtons second law
the net force of an object is equal to the product of it's acceleration and mass.
A unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second per second
The perpendicular distance from the axis of rotation to a line drawn along the direction of the force
newtons third law
for every action, there is an equal and opposite reaction, for every force or action there is an equal and opposite force or reaction
a device for overcoming resistance at one point by applying force at some other point
a simple machine of the inclined-plane type consisting of a spirally threaded cylindrical rod that engages with a similarly threaded hole
Any rigid rod or plank that rotates or pivots about a point (or fulcrum). MA= distance from fulcrum to input force/ distance from fulcrum to output force. Ex: seasaw
explanation of the behavior of molecules in matter; states that all matter is made of constantly moving particles that collide without losing energy
The relationship between the pressure and volume of a gas at constant temperture; when volume increase, pressure decreases., P1V1=P2V2
that for a fixe amount of gas at aconstant pressure the volume of the tgas increases as its temperature increases.
heat absorbed or radiated during a change of phase at a constant temperature and pressure
the reversible physical change that occurs when a substance changes from one state of matter to another
the amount of heat required to raise the temperature of 1g of a substance 1 degree Celsius
based on freezing point of water, freezing point of water is 0 degrees celcius, boiling point of water is 100 degrees celcius
the temperature and pressure conditions at which the solid, liquid, and gaseous phases of a substance coexist at equilibrium
The coldest temperature, 0 Kelvin, that can be reached. It is the hypothetical temperature at which all molecular motion stops.
a wave in which the particles of the medium vibrate back and forth along the path that the wave travels
a wave that moves the medium in a direction perpendicular to the direction in which the wave travels
the ratio of the number of observations in a statistical category to the total number of observations
when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands
a vibration of large amplitude produced by a relatively small vibration near the same frequency of vibration as the natural frequency of the resonating system
change in the apparent frequency of a wave as observer and source move toward or away from each other
The relative distribution or arrangement of it's individuals within a given amount of space.
radiographs, film images, creaged by projection of high energy electromagnetci waves through an area of a patients body onto a photographic plate, shows bony structures and organ outlines.
The amount of electric force between charged objects depends on the distance between the objects and the magnitude of the charges.
an electrical device by which alternating current of one voltage is changed to another voltage
the rate at which energy is drawn from a source that produces a flow of electricity in a circuit
the amount by which the mass of an atomic nucleus is less than the sum of the masses of its constituent particles
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
(physics) a process that alters the energy or structure or composition of atomic nuclei
reproduction of some unicellular organisms by division of the cell into two more or less equal parts
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together