Exam (elaborations)
Test Bank for Chemistry in Focus A Molecular View of Our World 5th Edition by Nivaldo
- Course
- Institution
Test Bank for Chemistry in Focus A Molecular View of Our World 5th Edition by Nivaldo
[Show more]
Seller
Follow
a_plus_work
Reviews received
Content preview
,Chapter 1—Molecular ReasonsMULTIPLE CHOICE
1. Which of these is the best definition of matter?
a. The pull of gravity on an object.
b. Anything that has weight and volume.
c. Anything that has mass and occupies space.
d. Anything that is directly proportional to weight.
e. The measure of the amount of space an object occupies.
ANS: C PTS: 1
2. Which of these statements is correct?
a. The amount of carbon on earth is essentially constant.
b. The amount of carbon on earth fluctuates with the seasons.
c. The amount of carbon on earth is increasing due to plant and animal growth.
d. The amount of carbon on earth is decreasing due to consumption of carbon based fuels.
e. Both B and C are correct.
ANS: A PTS: 1
3. The French chemist Antoine Lavoisier found that the weight of objects before burning and the weight
of the products after burning were equal. He concluded that the total weight did not change during a
process. Which of these best describes Lavoisier's conclusion?
a. From observation, Lavoisier created a scientific law.
b. From observation, Lavoisier created a scientific theory.
c. From scientific law, Lavoisier created a scientific theory.
d. From experimentation, Lavoisier created a scientific law.
e. From observation, Lavoisier created a scientific conclusion.
ANS: A PTS: 1
4. When using the scientific method, before experiments are done a ___________ should be
established.
a. hypothesis
b. law
c. theory
d. conclusion
ANS: A PTS: 1
5. A statement which summarizes the data obtained from a series of observations is known as a(n)
____.
a. observation
b. Law
c. theory
d. conclusion
e. experiment
ANS: B PTS: 1
Test Bank Chemistry in Focus, 5e 1
, 6. Which of these is not part of the scientific method?
a. observation
b. law
c. theory
d. conclusion
e. experiment
ANS: D PTS: 1
7. Which of these is the best definition of a scientific theory?
a. A prediction based on a limited number of observations.
b. A method of explaining observations that appears contradictory.
c. A broadly applicable generalization with virtually no exceptions.
d. A method for approaching problems that is used by all scientists.
e. A tentative model that describes the underlying cause of a physical behavior.
ANS: E PTS: 1
8. Which of these is the best definition of a scientific law?
a. A prediction based on a limited number of observations.
b. A method of explaining observations that appear contradictory.
c. A broadly applicable generalization with virtually no exceptions.
d. A method for approaching problems that is used by all scientists.
e. A rule made by scientists to ensure consistency in their observations.
ANS: C PTS: 1
9. A(n) ____ is an explanation of a scientific observation.
a. law
b. theory
c. conclusion
d. prediction
e. epiphany
ANS: B PTS: 1
10. Which of these is not a requirement of a scientifically acceptable theory?
a. Good predictive power of the theory.
b. Proven by additional experimentation.
c. Sound reasoning for a particular observation.
d. Easily revised to accommodate new observations
e. Provides model of behavior consistent with other widely accepted theories.
ANS: B PTS: 1
11. Which of these statements about the scientific method is incorrect?
a. It is not a group of absolute truths.
b. It uses experiments that are reproducible
c. It is used for testing claims about the natural world.
d. It requires one to propose a theory and perform experiments to give results which confirm
or disclaim the theory.
e. All of these are correct statements.
ANS: E PTS: 1
Test Bank Chemistry in Focus, 5e 2
, 12. To explain natural phenomena scientists must ______________.
a. have an opinion.
b. make observations.
c. guess correctly most of the time.
d. agree with existing theories.
ANS: B PTS: 1
13. Which scientist first theorized that matter was ultimately composed of small indivisible particles
called atoms?
a. Dalton
b. Lavoisier
c. Empedocles
d. Plato
e. Democritus
ANS: E PTS: 1
14. The historical predecessor to chemistry is known as ____.
a. alchemy
b. pre-chemistry
c. biology
d. biochemistry
e. physical science
ANS: A PTS: 1
15. Which of these contributions did Alchemists of the Middle Ages make to modern science?
a. sun centered universe and metallurgy
b. metallurgy and development of scientific techniques
c. scientific method and the Law of Conservation of Mass
d. Law of Conservation of Matter and The First Atomic Theory
e. Law of Conservation of Mass and the Law of Constant Composition
ANS: B PTS: 1
16. Thales believed that _________ is the principle element of all things.
a. earth
b. air
c. fire
d. water
e. gold
ANS: D PTS: 1
17. Which scientist is incorrectly matched with his idea or theory?
scientist theory
I. Copernicus a sun centered universe
II. Dalton Atomic Theory
III. Galileo a sun centered universe
IV. Vesalius Matter is composed of small indivisible particles.
V. Boyle The simplest form of a substance is an element.
Test Bank Chemistry in Focus, 5e 3
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller a_plus_work. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now