PSS Chemistry Exam 1 Ch 1,2, Questions & Answers 2024/2025
The four basic elements - ANSWERSAir
Fire
Water
Earth
science definition - ANSWERSthe methodical exploration of nature followed by a logical explanation of the observations
Experiment - ANSWERSInvolves scientists who explore n...
science definition - ANSWERSthe methodical exploration of nature followed by a logical explanation of
the observations
Experiment - ANSWERSInvolves scientists who explore nature according to a planned strategy and make
observations under controlled solutions
What is Science - ANSWERSA human activity hat involves the accumulation of knowledge about the
universe around us; seeks to explain nature
5 Characteristics of Science Knowledge - ANSWERSTestable
Reproducible
Explanatory
Predictive
Tentative
Observation - ANSWERSDetectable phenomena about nature
Scientific Law - ANSWERSA broad statement summarizing a large amount of related facts
Scientific Hypothesis - ANSWERSA speculative explanation of related facts that can lead to the prediction
of future behavior
, Scientific Theory - ANSWERSA well-tested hypothesis that reaches general acceptance; best current
explanation for natural phenomena
Scientific Models - ANSWERStangible items or pictures used to represent invisible processes
Molecules - ANSWERSGroups of two or more atoms held together by chemical bonds
Molecular Models - ANSWERSMacroscopic 3-D representations of submicroscopic molecules
Principle of Simplicity (Occam's Razor) - ANSWERSUse the least complicated explanation that fits all of
the facts. Often applied in devising hypotheses
Trial and Error (Edisonian Method) - ANSWERSExample: the search or a suitable material for the light
bulb
Planned Method - ANSWERSDevise a well-defined hypothesis and test it
Accidental Discovery - ANSWERSFinding something by accident (nutrasweet/sugar)
Limitations of Science - ANSWERSScience is limited to studying that which is observable as well as
processes in which variables can be controlled
Scientific Method - ANSWERSA systematic investigation of nature and requires proposing an explanation
for the results of an experiment in the form of a general principle
Hypothesis - ANSWERSThe initial or tentative explanation of an observation; can be rejected, revised, or
elevated to the status of a scientific principle
Natural law - ANSWERSStates a measurable relationship
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