.png){kind=logo}
Chemistry in Focus A Molecular View of Our World, 7e Nivaldo Tro
(Test Bank all Chapter)
- / 4
Chapter 01
Copyright Cengage Learning. Powered by Cognero. Page 1
- Which of these is true of matter?
- It is the pull of gravity on an object.
- It combines to form atoms.
- It is neither created nor destroyed during a chemical reaction.
- It is directly proportional to weight.
- It is the measure of space occupied by an object.
ANSWER: c
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: The Scientist and the Artist
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/24/2018 7:07 AM
- Which of these statements is correct?
- The amount of carbon on Earth is essentially constant.
- The amount of carbon on Earth fluctuates with the seasons.
- The amount of carbon on Earth is increasing because of plant and animal growth.
- The amount of carbon on Earth is decreasing because of the consumption of carbon-based fuels.
- All of these are correct.
ANSWER: a
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: The Scientist and the Artist
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/24/2018 7:08 AM
- The French chemist Antoine Lavoisier found that the weight of objects before burning and the weight of the products
- Lavoisier arrived at a scientific law from observation.
- Lavoisier arrived at a scientific theory from observation..
- Lavoisier arrived at a scientific theory from a scientific law.
- Lavoisier arrived at a scientific law from a scientific theory.
- Lavoisier arrived at a scientific conclusion from observation.
after burning were equal. He noticed that the total weight did not change during a process. Which of these best describes the scenario?
ANSWER: a
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: The Scientist and the Artist 2 / 4
Chapter 01
Copyright Cengage Learning. Powered by Cognero. Page 2
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:45 AM
- In a scientific method, a hypothesis is tested by a(n) _____.
- experiment
- law
- theory
- observation
- trial
ANSWER: a
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: The Scientist and the Artist
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:45 AM
- A statement that summarizes the data obtained from a series of observations is known as a(n) _____.
- observation
- law
- theory
- conclusion
- experiment
ANSWER: b
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: The Scientist and the Artist
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:46 AM
- Which of these is not part of the scientific method?
- Observation
- Law
- Theory
- Conclusion
- Experiment
ANSWER: d
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False 3 / 4
Chapter 01
Copyright Cengage Learning. Powered by Cognero. Page 3
TOPICS: The Scientist and the Artist
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:46 AM
- Which of these is the best definition of a scientific hypothesis?
- A prediction based on a limited number of observations
- A method of explaining observations that appears contradictory
- A broadly applicable generalization with virtually no exceptions
- A method for approaching problems that is used by all scientists
- A tentative model that describes the underlying cause of observations and laws
ANSWER: e
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: The Scientist and the Artist
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:47 AM
- Which of these is the best definition of a scientific law?
- A prediction based on a limited number of observations
- A method of explaining observations that appear contradictory
- A broadly applicable generalization with virtually no exceptions
- A method for approaching problems that is used by all scientists
- A rule made by scientists to ensure consistency in their observations
ANSWER: c
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
HAS VARIABLES: False
TOPICS: The Scientist and the Artist
DATE CREATED: 4/3/2014 7:50 AM
DATE MODIFIED: 1/22/2018 5:47 AM
- A(n) _____ is an explanation of a scientific observation.
- speculation
- theory
- conclusion
- prediction
- epiphany
ANSWER: b
POINTS: 1
DIFFICULTY: Easy
QUESTION TYPE: Multiple Choice
- / 4
.png)