Chapter 4 vocab Foundations of College Chemistry 14th edition, Hein & Arena

Unlock all answers in this set

Unlock answers
question
Calorie (cal)
answer
A commonly used unit of heat energy; 1 calorie is a quantity of heat energy that will raise the temperature of 1g of water 1° (i.e. from 14.5 to 15.5°C). also 4.184 joules = 1 calorie exactly.
question
Chemical change
answer
A change producing product that differ in composition from the original substances.
question
Chemical equations
answer
A shorthand expression showing the reactants and the products of a chemical change (i.e. 2H2O = 2H2 + O2).
question
Chemical properties
answer
Properties of a solution that depend on the number of solute particles in solution and not on the nature of the solute (i.e. vapor pressure lowering, freezing point depression, boiling point elevation).
question
Energy
answer
The capacity of matter to do work.
question
Joule (J)
answer
The SI unit of energy.
question
Kinetic energy (KE)
answer
The energy that matter possesses due to its motion; KE = ½ mv2.
question
Law of conservation of energy
answer
Energy can be neither created nor destroyed, though it can be transferred from one form to another.
question
Physical change
answer
A change in form (such as size, shape, or physical state (i.e. solid to liquid)) without a change in composition.
question
Physical properties
answer
Inherent physical characteristics of a substance that can be determined without altering its composition: color, taste, odor, state of matter, density, melting point, boiling point.
question
Potential energy (PE)
answer
Stored energy, or the energy of an object due to its relative position.
question
Products
answer
A chemical substance produced from reactants by a chemical change.
question
Properties
answer
The characteristics, or traits, of substances that give them their unique identities. Properties are classified as physical or chemical.
question
Reactants
answer
A chemical substance entering into a reaction.
question
Specific heat
answer
The quantity of heat required to change the temperature of 1g of any substance by 1°C.
Get an explanation on any task
Get unstuck with the help of our AI assistant in seconds
New