CHEM 101 - Exam 1 Study Guide (Ch. 1-3) Questions And Answers Rated A+.
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CHEM 101 -
CHEM 101 - Exam 1 Study Guide (Ch. 1-3) Questions And Answers Rated A+.
chemistry - correct answer. the study of matter and the changes it undergoes
scientific method - correct answer. a systematic approach to research
qualitative data - correct answer. general observation...
CHEM 101 - Exam 1 Study Guide (Ch. 1-3)
Questions And Answers Rated A+.
chemistry - correct answer. the study of matter and the changes it undergoes
scientific method - correct answer. a systematic approach to research
qualitative data - correct answer. general observations
quantitative data - correct answer. comprising of numbers obtained by measurement
hypothesis - correct answer. a tentative explanation for a set of observations
law - correct answer. a mathematical relationship that is consistently found to be true
theory - correct answer. a general principle or body of principles that has been
developed to explain a wide variety of phenomena (this is NOT a wild guess)
two major goals of science - correct answer. prediction and control
two "better" goals of science - correct answer. understanding and explanation
four basic rules of good science - correct answer. 1. results should be reproducible by
others
2. detailed research results should be reviewable
3. conclusions should be reasonable and unbiased
4. "give credit when credit is due"
physics - correct answer. chemistry in motion
, biology - correct answer. chemistry in a cell
engineering - correct answer. chemistry in application
matter - correct answer. anything that occupies volume and has mass
matter is governed by... - correct answer. composition and energy
mixture - correct answer. a combination of two or more substances in which the
substances retain their distinct identities
homogeneous mixture - correct answer. composition of the mixture is the same
throughout
heterogeneous mixture - correct answer. composition of the mixture is not uniform
throughout
mixture separation - correct answer. physical means can be used to separate a
mixture into its pure components
element - correct answer. a substance that cannot be separated into simpler
substances by chemical means
number of elements defined - correct answer. 114
number of elements that naturally occur on earth - correct answer. 82
number of elements been created by scientists - correct answer. 32
compound - correct answer. a substance composed of atoms of two or more elements
chemically united in fixed proportions
compound separation - correct answer. compounds can only be separated into their
pure components (elements) by chemical means
physical property - correct answer. properties that can be observed and measured
without changing the composition of the substance (color, density, conductivity, etc.)
chemical property - correct answer. properties that are only observable during a
chemical change (combustibility, food digestion...)
extensive property - correct answer. a property that depends upon how much matter
is being considered (mass, length, volume)
intensive property - correct answer. a property that does not depend upon how much
matter is being considered (density, temperature, color)
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