CHEM 101 - Exam #1 Study Guide
Chapter 1-3 Questions with Verified
Answers 2026 Updated.
chemistry - Answer the study of matter and the changes it undergoes
scientific method - Answer a systematic approach to research
qualitative data - Answer general observations
quantitative data - Answer comprising of numbers obtained by measurement
hypothesis - Answer a tentative explanation for a set of observations
law - Answer a mathematical relationship that is consistently found to be true
theory - 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 - Answer prediction and control
two "better" goals of science - Answer understanding and explanation
four basic rules of good science - 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 - Answer chemistry in motion
biology - Answer chemistry in a cell
, matter is governed by... - Answer composition and energy
mixture - Answer a combination of two or more substances in which the substances retain
their distinct identities
homogeneous mixture - Answer composition of the mixture is the same throughout
heterogeneous mixture - Answer composition of the mixture is not uniform throughout
mixture separation - Answer physical means can be used to separate a mixture into its pure
components
element - Answer a substance that cannot be separated into simpler substances by chemical
means
number of elements defined - Answer 114
number of elements that naturally occur on earth - Answer 82
number of elements been created by scientists - Answer 32
compound - Answer a substance composed of atoms of two or more elements chemically
united in fixed proportions
compound separation - Answer compounds can only be separated into their pure
components (elements) by chemical means
physical property - Answer properties that can be observed and measured without changing
the composition of the substance (color, density, conductivity, etc.)
chemical property - Answer properties that are only observable during a chemical change
(combustibility, food digestion...)
Chapter 1-3 Questions with Verified
Answers 2026 Updated.
chemistry - Answer the study of matter and the changes it undergoes
scientific method - Answer a systematic approach to research
qualitative data - Answer general observations
quantitative data - Answer comprising of numbers obtained by measurement
hypothesis - Answer a tentative explanation for a set of observations
law - Answer a mathematical relationship that is consistently found to be true
theory - 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 - Answer prediction and control
two "better" goals of science - Answer understanding and explanation
four basic rules of good science - 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 - Answer chemistry in motion
biology - Answer chemistry in a cell
, matter is governed by... - Answer composition and energy
mixture - Answer a combination of two or more substances in which the substances retain
their distinct identities
homogeneous mixture - Answer composition of the mixture is the same throughout
heterogeneous mixture - Answer composition of the mixture is not uniform throughout
mixture separation - Answer physical means can be used to separate a mixture into its pure
components
element - Answer a substance that cannot be separated into simpler substances by chemical
means
number of elements defined - Answer 114
number of elements that naturally occur on earth - Answer 82
number of elements been created by scientists - Answer 32
compound - Answer a substance composed of atoms of two or more elements chemically
united in fixed proportions
compound separation - Answer compounds can only be separated into their pure
components (elements) by chemical means
physical property - Answer properties that can be observed and measured without changing
the composition of the substance (color, density, conductivity, etc.)
chemical property - Answer properties that are only observable during a chemical change
(combustibility, food digestion...)
