CHEMISTRY: A MOLECULAR APPROACH
CHAPTER 25 EXAM PREP QUESTIONS AND
ANSWERS FULLY VERIFIED
◉ observations.
Answer: descriptions about the characteristics or behavior of nature
- data
◉ hypothesis.
Answer: A tentative interpretation or explanation of an observation.
A good one is falsifiable.
◉ experiment.
Answer: A highly controlled procedure designed to generate
observations that may support a hypothesis or prove it wrong.
◉ scientific law.
Answer: A brief statement or equation that summarizes past
observations and predicts future ones.
◉ theory.
, Answer: •One or more well-established hypotheses may form the
basis for a scientific theory.
- it is a model for the way nature is and tries to explain what it does
and why it does it.
- can never be conclusively proven
◉ law of conservation of mass.
Answer: A law stating that matter is neither created nor destroyed in
a chemical reaction.
◉ atomic theory.
Answer: The theory that each element is composed of tiny
indestructible particles called atoms, that all atoms of a given
element have the same mass and other properties, and that atoms
combine in simple, whole-number ratios to form compounds.
◉ matter.
Answer: Anything that occupies space and has mass.
◉ substance.
Answer: A specific instance of matter such as air, water, or sand.
◉ state.
CHAPTER 25 EXAM PREP QUESTIONS AND
ANSWERS FULLY VERIFIED
◉ observations.
Answer: descriptions about the characteristics or behavior of nature
- data
◉ hypothesis.
Answer: A tentative interpretation or explanation of an observation.
A good one is falsifiable.
◉ experiment.
Answer: A highly controlled procedure designed to generate
observations that may support a hypothesis or prove it wrong.
◉ scientific law.
Answer: A brief statement or equation that summarizes past
observations and predicts future ones.
◉ theory.
, Answer: •One or more well-established hypotheses may form the
basis for a scientific theory.
- it is a model for the way nature is and tries to explain what it does
and why it does it.
- can never be conclusively proven
◉ law of conservation of mass.
Answer: A law stating that matter is neither created nor destroyed in
a chemical reaction.
◉ atomic theory.
Answer: The theory that each element is composed of tiny
indestructible particles called atoms, that all atoms of a given
element have the same mass and other properties, and that atoms
combine in simple, whole-number ratios to form compounds.
◉ matter.
Answer: Anything that occupies space and has mass.
◉ substance.
Answer: A specific instance of matter such as air, water, or sand.
◉ state.
