CHM 151 Exam 1 UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Chemistry - CORRECT ANSWER The study of matter and the changes it undergoes
Observation - CORRECT ANSWER Information gathered using senses
Law - CORRECT ANSWER Describes what happens in nature
Hypothesis - CORRECT ANSWER Tentative explanation for observations
Theory - CORRECT ANSWER Well-tested explanation of why something happens
Macroscopic domain - CORRECT ANSWER Observable, large-scale phenomena
Microscopic domain - CORRECT ANSWER Atoms and molecules
Symbolic domain - CORRECT ANSWER Chemical symbols, formulas, equations
Solid - CORRECT ANSWER Fixed shape and volume; particles tightly packed
Liquid - CORRECT ANSWER Fixed volume, takes shape of container
Gas - CORRECT ANSWER Takes shape and volume of container; particles far apart
Mass - CORRECT ANSWER Amount of matter in an object
Weight - CORRECT ANSWER Force of gravity acting on an object
, Law of Conservation of Matter - CORRECT ANSWER Matter is neither created nor
destroyed
Atom - CORRECT ANSWER Smallest unit of an element that retains its properties
Molecule - CORRECT ANSWER Two or more atoms bonded together
Element - CORRECT ANSWER Pure substance made of one type of atom
Compound - CORRECT ANSWER Substance made of two or more elements
chemically bonded
Mixture - CORRECT ANSWER Combination of substances physically mixed
Homogeneous mixture - CORRECT ANSWER Uniform composition throughout
Heterogeneous mixture - CORRECT ANSWER Non-uniform composition
Physical property - CORRECT ANSWER Can be observed without changing identity
Chemical property - CORRECT ANSWER Describes ability to undergo chemical
change
Physical change - CORRECT ANSWER Change in form but not identity
Chemical change - CORRECT ANSWER Change that forms a new substance
Extensive property - CORRECT ANSWER Depends on amount of matter
QUESTIONS AND CORRECT ANSWERS
Chemistry - CORRECT ANSWER The study of matter and the changes it undergoes
Observation - CORRECT ANSWER Information gathered using senses
Law - CORRECT ANSWER Describes what happens in nature
Hypothesis - CORRECT ANSWER Tentative explanation for observations
Theory - CORRECT ANSWER Well-tested explanation of why something happens
Macroscopic domain - CORRECT ANSWER Observable, large-scale phenomena
Microscopic domain - CORRECT ANSWER Atoms and molecules
Symbolic domain - CORRECT ANSWER Chemical symbols, formulas, equations
Solid - CORRECT ANSWER Fixed shape and volume; particles tightly packed
Liquid - CORRECT ANSWER Fixed volume, takes shape of container
Gas - CORRECT ANSWER Takes shape and volume of container; particles far apart
Mass - CORRECT ANSWER Amount of matter in an object
Weight - CORRECT ANSWER Force of gravity acting on an object
, Law of Conservation of Matter - CORRECT ANSWER Matter is neither created nor
destroyed
Atom - CORRECT ANSWER Smallest unit of an element that retains its properties
Molecule - CORRECT ANSWER Two or more atoms bonded together
Element - CORRECT ANSWER Pure substance made of one type of atom
Compound - CORRECT ANSWER Substance made of two or more elements
chemically bonded
Mixture - CORRECT ANSWER Combination of substances physically mixed
Homogeneous mixture - CORRECT ANSWER Uniform composition throughout
Heterogeneous mixture - CORRECT ANSWER Non-uniform composition
Physical property - CORRECT ANSWER Can be observed without changing identity
Chemical property - CORRECT ANSWER Describes ability to undergo chemical
change
Physical change - CORRECT ANSWER Change in form but not identity
Chemical change - CORRECT ANSWER Change that forms a new substance
Extensive property - CORRECT ANSWER Depends on amount of matter
