Chemistry-1 EXAM REVIEW WITH
CORRECT ANSWERS
mass - correct answer-the amount of matter in an object
volume - correct answer-the amount of space occupied by an object
extensive property - correct answer-a property that depends on the amount of matter in
a sample
intensive property - correct answer-a property that depends on the type of matter in a
sample, not the amount of matter
substance - correct answer-Matter that has a uniform and definite composition
physical property - correct answer-a quality or condition of a substance that can be
observed or measured without changing the substance's composition
solid - correct answer-of definite shape and volume
liquid - correct answer-a substance in the fluid state of matter having no fixed shape but
a fixed volume
gas - correct answer-the state of matter distinguished from the solid and liquid states by:
relatively low density and viscosity
vapor - correct answer-matter that exists in the gas state but is generally a liquid or solid
at room temperature
Physical change - correct answer-a change from one state (solid or liquid or gas) to
another without a change in chemical composition
mixtures - correct answer-a physical combination of substances that can still be
seperated
heterogeneous mixture - correct answer-a mixture in which the composition is not
uniform throughout
homogeneous mixture - correct answer-a mixture in which the composition is uniform
throughout
, solution - correct answer-a homogeneous mixture of two or more substances
phase - correct answer-(physical chemistry) a distinct state of matter in a system
filtration - correct answer-the process that separates a solid from the liquid in a
heterogeneous mixture
distillation - correct answer-the process of purifying a liquid by boiling it and condensing
its vapors
element - correct answer-any of the more than 100 known substances (of which 92
occur naturally) that cannot be separated into simpler substances and that singly or in
combination constitute all matter
compound - correct answer-a substance made up of atoms of two or more different
elements joined by chemical bonds
chemical change - correct answer-a change that produces matter with a different
composition than the original matter
chemical symbol - correct answer-a one or two letter representation of an element
chemical property - correct answer-the ability of a substance to undergo a specific
chemical change
chemical reaction - correct answer-the process by which one or more substances
change to produce one or more different substances
reactant - correct answer-a chemical substance that is present at the start of a chemical
reaction
product - correct answer-a chemical substance formed as a result of a chemical
reaction
precipitate - correct answer-A solid that forms and settles out of a liquid mixture
Law of Conversation of Mass - correct answer-the total mass of the matter is the same
before and after a physical or chemical change
atom - correct answer-(physics and chemistry) the smallest component of an element
having the chemical properties of the element
Dalton's Atomic Theory - correct answer-1) elements are composed of atoms. 2) atoms
of same element are identical, but differ from other elements. 3) elements can mix
together 4) atoms only change when mixed with other elements
CORRECT ANSWERS
mass - correct answer-the amount of matter in an object
volume - correct answer-the amount of space occupied by an object
extensive property - correct answer-a property that depends on the amount of matter in
a sample
intensive property - correct answer-a property that depends on the type of matter in a
sample, not the amount of matter
substance - correct answer-Matter that has a uniform and definite composition
physical property - correct answer-a quality or condition of a substance that can be
observed or measured without changing the substance's composition
solid - correct answer-of definite shape and volume
liquid - correct answer-a substance in the fluid state of matter having no fixed shape but
a fixed volume
gas - correct answer-the state of matter distinguished from the solid and liquid states by:
relatively low density and viscosity
vapor - correct answer-matter that exists in the gas state but is generally a liquid or solid
at room temperature
Physical change - correct answer-a change from one state (solid or liquid or gas) to
another without a change in chemical composition
mixtures - correct answer-a physical combination of substances that can still be
seperated
heterogeneous mixture - correct answer-a mixture in which the composition is not
uniform throughout
homogeneous mixture - correct answer-a mixture in which the composition is uniform
throughout
, solution - correct answer-a homogeneous mixture of two or more substances
phase - correct answer-(physical chemistry) a distinct state of matter in a system
filtration - correct answer-the process that separates a solid from the liquid in a
heterogeneous mixture
distillation - correct answer-the process of purifying a liquid by boiling it and condensing
its vapors
element - correct answer-any of the more than 100 known substances (of which 92
occur naturally) that cannot be separated into simpler substances and that singly or in
combination constitute all matter
compound - correct answer-a substance made up of atoms of two or more different
elements joined by chemical bonds
chemical change - correct answer-a change that produces matter with a different
composition than the original matter
chemical symbol - correct answer-a one or two letter representation of an element
chemical property - correct answer-the ability of a substance to undergo a specific
chemical change
chemical reaction - correct answer-the process by which one or more substances
change to produce one or more different substances
reactant - correct answer-a chemical substance that is present at the start of a chemical
reaction
product - correct answer-a chemical substance formed as a result of a chemical
reaction
precipitate - correct answer-A solid that forms and settles out of a liquid mixture
Law of Conversation of Mass - correct answer-the total mass of the matter is the same
before and after a physical or chemical change
atom - correct answer-(physics and chemistry) the smallest component of an element
having the chemical properties of the element
Dalton's Atomic Theory - correct answer-1) elements are composed of atoms. 2) atoms
of same element are identical, but differ from other elements. 3) elements can mix
together 4) atoms only change when mixed with other elements
