Chem 161 Exam 1 2024/25; Questions and
Answers 100% Solved
scientific theory
explains how/why. based on observations/experiments, makes testable
predictions, changes over time based on new evidence, can be falsifiable
scientific law predicts what happens
intensive property
independent of the amount of substance present (color, odor, maleability,
density)
extensive property
depends upon amount of substance you have (mass, length, volume)
physical property
, Chem 161 Exam 1 2024/25; Questions and
Answers 100% Solved
A characteristic of a pure substance that can be observed without changing it
into another substance (physical state, boiling point, color, smell)
chemical property
A characteristic of a pure substance involving its chemical change (ability to
react with oxygen, ability to react with water)
mixtures
RATED A+
material that can be separated by physical means into two or more substances
(bronze, salt water)
physical change
change in the form of matter but not in its chem identity
, Chem 161 Exam 1 2024/25; Questions and
Answers 100% Solved
(boiling, melting, dissolving)
chemical change
equals chem reaction, change in which one or more kinds of matter are
transformed into a new kind of matter or multiple new kinds of matter (rust,
photosynthesis, digestion)
compound
substance composed of characteristic proportions of two or
more elements chemically bonded together
heat
transfer of energy from one object to another due to a difference in
temperature
Answers 100% Solved
scientific theory
explains how/why. based on observations/experiments, makes testable
predictions, changes over time based on new evidence, can be falsifiable
scientific law predicts what happens
intensive property
independent of the amount of substance present (color, odor, maleability,
density)
extensive property
depends upon amount of substance you have (mass, length, volume)
physical property
, Chem 161 Exam 1 2024/25; Questions and
Answers 100% Solved
A characteristic of a pure substance that can be observed without changing it
into another substance (physical state, boiling point, color, smell)
chemical property
A characteristic of a pure substance involving its chemical change (ability to
react with oxygen, ability to react with water)
mixtures
RATED A+
material that can be separated by physical means into two or more substances
(bronze, salt water)
physical change
change in the form of matter but not in its chem identity
, Chem 161 Exam 1 2024/25; Questions and
Answers 100% Solved
(boiling, melting, dissolving)
chemical change
equals chem reaction, change in which one or more kinds of matter are
transformed into a new kind of matter or multiple new kinds of matter (rust,
photosynthesis, digestion)
compound
substance composed of characteristic proportions of two or
more elements chemically bonded together
heat
transfer of energy from one object to another due to a difference in
temperature
