WTCC CHM 151 EXAM 1 QUESTIONS AND VERIFIED
ANSWERS
Chemistry - Answers - The study of the compositions, properties, and interactions of
matter
Matter - Answers - anything that occupies a volume and has a mass
Atom - Answers - smallest particle of an element that has the properties of that element
Molecules - Answers - two or more atoms joined by strong forces called chemical bonds
Hypothesis - Answers - Tentative explaination for observations
guess or prediction of why something happens (must be testable)
if, then, because statements
Theory - Answers - really strong hypothesis w/ lots of evidence
still explains why
1st Domain of chemistry - Answers - Macroscopic (can see w/ eyes)
2nd Domain of chemistry - Answers - Microscopic (really small, can see with
microscope)
3rd Domain of Chemistry - Answers - Symbolic (symbols that represent states of matter)
solids - Answers - do not conform to the shape of their container
liquids - Answers - conform to the shape of their container
gases - Answers - assume both the shape and volume of their container
Pure Substance - Answers - has definite compositions and properties, cannot be
physically seperated
- Element + Compound
Element (Pure subs) - Answers - A pure substance made of only one kind of atom
cant be broken down chemically into simpler substances
Compound (pure subs) - Answers - substance formed by the chemical combination of
two or more atoms, can be broken down chemically
Mixtures - Answers - can be physically seperated
can be hetero/homogenous
ANSWERS
Chemistry - Answers - The study of the compositions, properties, and interactions of
matter
Matter - Answers - anything that occupies a volume and has a mass
Atom - Answers - smallest particle of an element that has the properties of that element
Molecules - Answers - two or more atoms joined by strong forces called chemical bonds
Hypothesis - Answers - Tentative explaination for observations
guess or prediction of why something happens (must be testable)
if, then, because statements
Theory - Answers - really strong hypothesis w/ lots of evidence
still explains why
1st Domain of chemistry - Answers - Macroscopic (can see w/ eyes)
2nd Domain of chemistry - Answers - Microscopic (really small, can see with
microscope)
3rd Domain of Chemistry - Answers - Symbolic (symbols that represent states of matter)
solids - Answers - do not conform to the shape of their container
liquids - Answers - conform to the shape of their container
gases - Answers - assume both the shape and volume of their container
Pure Substance - Answers - has definite compositions and properties, cannot be
physically seperated
- Element + Compound
Element (Pure subs) - Answers - A pure substance made of only one kind of atom
cant be broken down chemically into simpler substances
Compound (pure subs) - Answers - substance formed by the chemical combination of
two or more atoms, can be broken down chemically
Mixtures - Answers - can be physically seperated
can be hetero/homogenous
