1.1
Chemistry is:
1. The mystical search for the meaning of life
2. The science of what matter does by studying atoms
and molecules
3. The speculation about the nature of atoms and
molecules
4. None of these
5. All of these
Tro IC.3
1.1
Chemistry is:
1. The mystical search for the meaning of life
2. The science of what matter does by studying atoms
and molecules
3. The speculation about the nature of atoms and
molecules
4. None of these
5. All of these
Tro IC.3
1.2
Theories are validated by:
1.
2.
3.
4.
5.
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Observations
Models
Laws
Experiments
Guesses
1.2
Theories are validated by:
1.
2.
3.
4.
5.
Tro IC.3
Observations
Models
Laws
Experiments
Guesses
1.3
A brief statement that summarizes past
observations and predicts future ones is called a:
1.
2.
3.
4.
5.
Tro IC.3
Scientific theory
Scientific law
Hypothesis
Fact
Experiment
1.3
A brief statement that summarizes past
observations and predicts future ones is called a:
1.
2.
3.
4.
5.
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Scientific theory
Scientific law
Hypothesis
Fact
Experiment
1.4
The scientific method emphasizes:
1.
2.
3.
4.
5.
Tro IC.3
Observations and experimentation
Facts and scientific laws
Theories and experimentation
Hypotheses and models
None of the above
1.4
The scientific method emphasizes:
1.
2.
3.
4.
5.
Tro IC.3
Observations and experimentation
Facts and scientific laws
Theories and experimentation
Hypotheses and models
None of the above
1.5
Which term best fits the following definition:
A theory before it has become well established?
1.
2.
3.
4.
5.
Tro IC.3
Observation
Scientific method
Scientific law
Scientific theory
Hypothesis
1.5
Which term best fits the following definition:
A theory before it has become well established?
1.
2.
3.
4.
5.
Tro IC.3
Observation
Scientific method
Scientific law
Scientific theory
Hypothesis
1.6
Which of the following would NOT be considered
matter?
1.
2.
3.
4.
5.
Tro IC.3
Water
Sugar
Light
Gasoline
Sand
1.6
Which of the following would NOT be considered
matter?
1.
2.
3.
4.
5.
Tro IC.3
Water
Sugar
Light
Gasoline
Sand
1.7
What is the first step in the scientific method?
1.
2.
3.
4.
5.
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Observe some aspect of nature
Develop a scientific hypothesis
Design a detailed experiment
Check the results in triplicate
Develop a scientific law to summarize
observations
1.7
What is the first step in the scientific method?
1.
2.
3.
4.
5.
Tro IC.3
Observe some aspect of nature
Develop a scientific hypothesis
Design a detailed experiment
Check the results in triplicate
Develop a scientific law to summarize
observations
1.8
The connections that hold atoms to each other are
called:
1.
2.
3.
4.
5.
Tro IC.3
Sticky atoms
Strong attachments
Chemical bonds
Molecular bonds
Attractive forces
1.8
The connections that hold atoms to each other are
called:
1.
2.
3.
4.
5.
Tro IC.3
Sticky atoms
Strong attachments
Chemical bonds
Molecular bonds
Attractive forces
1.9
Which of the following statements best describes
the Law of Conservation of Mass?
1.
2.
3.
4.
All matter contains the same mass.
Matter can be converted to less massive things.
Matter can be converted to more massive things.
Mass is neither created nor destroyed in a
chemical reaction.
5. Mass can be either created or saved in a
chemical reaction.
Tro IC.3
1.9
Which of the following statements best describes
the Law of Conservation of Mass?
1.
2.
3.
4.
All matter contains the same mass.
Matter can be converted to less massive things.
Matter can be converted to more massive things.
Mass is neither created nor destroyed in a
chemical reaction.
5. Mass can be either created or saved in a
chemical reaction.
Tro IC.3
1.10
Which of the following can be classified as matter?
1.
2.
3.
4.
5.
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Lead
Salt
Car
Chair
All of the above
1.10
Which of the following can be classified as matter?
1.
2.
3.
4.
5.
Tro IC.3
Lead
Salt
Car
Chair
All of the above
1.11
What is one important quality for being a successful
chemist?
1.
2.
3.
4.
5.
Tro IC.3
Curious
Courageous
Competent
Clueless
Careful
1.11
What is one important quality for being a successful
chemist?
1.
2.
3.
4.
5.
Tro IC.3
Curious
Courageous
Competent
Clueless
Careful
1.12
Which one of the following scientists stated and
studied the Law of Conservation of Mass?
1.
2.
3.
4.
5.
Tro IC.3
Dalton
Lavoisier
Proust
Rutherford
Aristotle
1.12
Which one of the following scientists stated and
studied the Law of Conservation of Mass?
1.
2.
3.
4.
5.
Tro IC.3
Dalton
Lavoisier
Proust
Rutherford
Aristotle
1.13
Which scientist proposed that all matter was
composed of small, indestructible particles called
atoms?
1.
2.
3.
4.
5.
Tro IC.3
Dalton
Lavoisier
Proust
Rutherford
Aristotle
1.13
Which scientist proposed that all matter was
composed of small, indestructible particles called
atoms?
1.
2.
3.
4.
5.
Tro IC.3
Dalton
Lavoisier
Proust
Rutherford
Aristotle
1.14
Which of the following is a chemical?
1.
2.
3.
4.
5.
Tro IC.3
Air
Shampoo
Water
Turpentine
All of the above
1.14
Which of the following is a chemical?
1.
2.
3.
4.
5.
Tro IC.3
Air
Shampoo
Water
Turpentine
All of the above
1.15
Tro IC.3
What is the difference between a scientific
hypothesis and a theory?
1. Only a scientific hypothesis can be scrutinized,
while a theory is generally accepted and never
changes.
2. A hypothesis is a summary of observed behavior,
while a theory is an explanation of the behavior.
3. Once a hypothesis has been proven to be
accurate, it becomes a theory.
4. A scientific hypothesis is a testable assumption,
while a theory is an accepted model used to
explain the way nature is and predict future
behavior.
5. A hypothesis is a definite explanation for an
observation, while a theory is just an educated
guess.
1.15
Tro IC.3
What is the difference between a scientific
hypothesis and a theory?
1. Only a scientific hypothesis can be scrutinized,
while a theory is generally accepted and never
changes.
2. A hypothesis is a summary of observed behavior,
while a theory is an explanation of the behavior.
3. Once a hypothesis has been proven to be
accurate, it becomes a theory.
4. A scientific hypothesis is a testable assumption,
while a theory is an accepted model used to
explain the way nature is and predict future
behavior.
5. A hypothesis is a definite explanation for an
observation, while a theory is just an educated
guess.
1.16
Which of the following is an example of a scientific
theory?
1. The addition of battery acid to sugar results in the
formation of a black substance and smoke.
2. Gases consist of molecules in constant random
motion.
3. The burning of wood results in a flame, heat,
smoke, and ash.
4. A pure compound always contains definite or
constant proportions of elements by mass.
5. None of the above
Tro IC.3
1.16
Which of the following is an example of a scientific
theory?
1. The addition of battery acid to sugar results in the
formation of a black substance and smoke.
2. Gases consist of molecules in constant random
motion.
3. The burning of wood results in a flame, heat,
smoke, and ash.
4. A pure compound always contains definite or
constant proportions of elements by mass.
5. None of the above
Tro IC.3
1.17
Which of the following is an example of an
observation?
1. Energy may be converted from one form to another,
2.
3.
4.
5.
Tro IC.3
but the total quantity of energy remains constant.
Gases consist of molecules in constant random
motion.
The burning of wood results in a flame, heat,
smoke, and ash.
A pure compound always contains definite or
constant proportions of elements by mass.
None of the above
1.17
Which of the following is an example of an
observation?
1. Energy may be converted from one form to another,
2.
3.
4.
5.
Tro IC.3
but the total quantity of energy remains constant.
Gases consist of molecules in constant random
motion.
The burning of wood results in a flame, heat,
smoke, and ash.
A pure compound always contains definite or
constant proportions of elements by mass.
None of the above
1.18
Which of the following is a scientific law?
1. Energy may be converted from one form to
another, but the total quantity of energy remains
constant.
2. Gases consist of molecules in constant random
motion.
3. The burning of wood results in a flame, heat,
smoke, and ash.
4. At absolute zero, the motion of all atoms stop.
5. None of the above
Tro IC.3
1.18
Which of the following is a scientific law?
1. Energy may be converted from one form to
another, but the total quantity of energy remains
constant.
2. Gases consist of molecules in constant random
motion.
3. The burning of wood results in a flame, heat,
smoke, and ash.
4. At absolute zero, the motion of all atoms stop.
5. None of the above
Tro IC.3