INTRODUCTION TO CHEMICAL PRINCIPLES
2026 PRACTICE TEST SHEET FULL SOLUTIONS
CORRECT ANSWERS GUARANTEED PASS
◉ Define science.
Answer: The process of seeking an understanding of the underlying
principles of nature.
◉ What is technology?
Answer: The direct application of knowledge to solve problems.
◉ What is green chemistry?
Answer: A field that uses materials and processes intended to
prevent or reduce pollution at its source.
◉ What is sustainable chemistry?
Answer: Chemistry designed to meet the needs of the present
without compromising future generations' needs.
◉ What is a hypothesis?
Answer: A testable explanation of observed data.
, ◉ What is a scientific law?
Answer: A summary of large amounts of scientific data that
describes natural phenomena.
◉ What is a scientific theory?
Answer: A set of tested hypotheses that explain natural phenomena.
◉ What is a scientific model?
Answer: A tangible item or picture used to represent invisible
processes.
◉ Differentiate mass and weight.
Answer: Mass is the measure of the amount of matter in an object;
weight is the measure of the gravitational force on that matter.
◉ What is the desirability quotient (DQ)?
Answer: A calculation used in risk-benefit analysis: DQ = Benefits /
Risks.
◉ What is the difference between basic research and applied
research?
Answer: Basic research seeks knowledge for its own sake; applied
research studies specific problems in industry or the environment.
2026 PRACTICE TEST SHEET FULL SOLUTIONS
CORRECT ANSWERS GUARANTEED PASS
◉ Define science.
Answer: The process of seeking an understanding of the underlying
principles of nature.
◉ What is technology?
Answer: The direct application of knowledge to solve problems.
◉ What is green chemistry?
Answer: A field that uses materials and processes intended to
prevent or reduce pollution at its source.
◉ What is sustainable chemistry?
Answer: Chemistry designed to meet the needs of the present
without compromising future generations' needs.
◉ What is a hypothesis?
Answer: A testable explanation of observed data.
, ◉ What is a scientific law?
Answer: A summary of large amounts of scientific data that
describes natural phenomena.
◉ What is a scientific theory?
Answer: A set of tested hypotheses that explain natural phenomena.
◉ What is a scientific model?
Answer: A tangible item or picture used to represent invisible
processes.
◉ Differentiate mass and weight.
Answer: Mass is the measure of the amount of matter in an object;
weight is the measure of the gravitational force on that matter.
◉ What is the desirability quotient (DQ)?
Answer: A calculation used in risk-benefit analysis: DQ = Benefits /
Risks.
◉ What is the difference between basic research and applied
research?
Answer: Basic research seeks knowledge for its own sake; applied
research studies specific problems in industry or the environment.
