CHEM 105 CHAPTER 1-3 EXAM
QUESTIONS AND ANSWERS
Chemistry - Correct Answers -Study of matter and the changes it undergos
Matter - Correct Answers -Anything that has mass and occupies a space
Scientific Method - Correct Answers -1. Observation
2. Hypothesis
3. Prediction
4. Experiment
Hypothesis - Correct Answers -educated guess
Theory/ Law of Nature - Correct Answers -When the experiment results support the
hypothesis
Physical Sciences - Correct Answers -Chemistry, Geology, Physics, Astronomy
Biological Sciences - Correct Answers -Botany, Zoology
Physics - Correct Answers -Science of matter and energy and of interactions between
them
Geology - Correct Answers -Study of the origin, history, and structure of earth
Astronomy - Correct Answers -Study of matter in outer space
Botany - Correct Answers -Study of plants
Zoology - Correct Answers -Study of animals
"Physical Chemistry" - Correct Answers -When chemistry is applied to physics
"Geochemistry" - Correct Answers -Chemistry of the earth
"Biochemistry" - Correct Answers -Chemistry of the biological entities
Basic Science - Correct Answers -Research without the goal of practical application
, Benefits include: contributions to culture, possibility of discoveries of huge economic
and practical importance, broadening education
Applied Science - Correct Answers -Science of applying the knowledge gained from one
or more natural scientific fields to practical problems
Outcomes can be used to develop technology
Macroscopic - Correct Answers -Form of matter large enough to be seen by the naked
eye
Microscopic - Correct Answers -Matter that requires the aid of a microscope to be seen
Submicroscopic - Correct Answers -Matter too small to be seen even with the most
powerful microscopes (Material in the makeup of atoms and elements)
Mass - Correct Answers -The quantity of matter in an object (always will stay the same)
Weight - Correct Answers -The force that results from the attraction between matter and
earth (Can change in outer space, etc.)
Property - Correct Answers -Anything that is observed or measured about a sample of
matter
Intensive Property - Correct Answers -Properties that are independent of the sample
size
ex. concentration, density, boiling/freezing points
Extensive Property - Correct Answers -Depends on the size/amount of the sample
ex. mass, volume, energy
Elements - Correct Answers -Substances containing only one kind of atom
Atom - Correct Answers -Smallest unit found in elements
Pure Substance - Correct Answers -Matter with fixed composition at the submicroscopic
level
Compounds - Correct Answers -Can be decomposed into simpler substances by normal
chemical means-can be pure substances or mixtures of different compounds
Heterogeneous Mixtures - Correct Answers -Different substances can easily be seen
within the mixture (vintager and oil)
Homogeneous Mixtures - Correct Answers -Have a uniform composition throughout the
sample (window cleaner)
QUESTIONS AND ANSWERS
Chemistry - Correct Answers -Study of matter and the changes it undergos
Matter - Correct Answers -Anything that has mass and occupies a space
Scientific Method - Correct Answers -1. Observation
2. Hypothesis
3. Prediction
4. Experiment
Hypothesis - Correct Answers -educated guess
Theory/ Law of Nature - Correct Answers -When the experiment results support the
hypothesis
Physical Sciences - Correct Answers -Chemistry, Geology, Physics, Astronomy
Biological Sciences - Correct Answers -Botany, Zoology
Physics - Correct Answers -Science of matter and energy and of interactions between
them
Geology - Correct Answers -Study of the origin, history, and structure of earth
Astronomy - Correct Answers -Study of matter in outer space
Botany - Correct Answers -Study of plants
Zoology - Correct Answers -Study of animals
"Physical Chemistry" - Correct Answers -When chemistry is applied to physics
"Geochemistry" - Correct Answers -Chemistry of the earth
"Biochemistry" - Correct Answers -Chemistry of the biological entities
Basic Science - Correct Answers -Research without the goal of practical application
, Benefits include: contributions to culture, possibility of discoveries of huge economic
and practical importance, broadening education
Applied Science - Correct Answers -Science of applying the knowledge gained from one
or more natural scientific fields to practical problems
Outcomes can be used to develop technology
Macroscopic - Correct Answers -Form of matter large enough to be seen by the naked
eye
Microscopic - Correct Answers -Matter that requires the aid of a microscope to be seen
Submicroscopic - Correct Answers -Matter too small to be seen even with the most
powerful microscopes (Material in the makeup of atoms and elements)
Mass - Correct Answers -The quantity of matter in an object (always will stay the same)
Weight - Correct Answers -The force that results from the attraction between matter and
earth (Can change in outer space, etc.)
Property - Correct Answers -Anything that is observed or measured about a sample of
matter
Intensive Property - Correct Answers -Properties that are independent of the sample
size
ex. concentration, density, boiling/freezing points
Extensive Property - Correct Answers -Depends on the size/amount of the sample
ex. mass, volume, energy
Elements - Correct Answers -Substances containing only one kind of atom
Atom - Correct Answers -Smallest unit found in elements
Pure Substance - Correct Answers -Matter with fixed composition at the submicroscopic
level
Compounds - Correct Answers -Can be decomposed into simpler substances by normal
chemical means-can be pure substances or mixtures of different compounds
Heterogeneous Mixtures - Correct Answers -Different substances can easily be seen
within the mixture (vintager and oil)
Homogeneous Mixtures - Correct Answers -Have a uniform composition throughout the
sample (window cleaner)
