1. Laurie LeBlanc Cuyamaca College
Clicker Questions
Chapter 1 The Chemical
World
Laurie LeBlanc Cuyamaca College 1

2. the mystical search for the meaning of life.
Chemistry is
the mystical search for the meaning of life.
the science of what matter does by studying atoms and molecules.
speculation about the nature of atoms and molecules.
None of these
All of these
Answer: B 2

3. the mystical search for the meaning of life.
Chemistry is
the mystical search for the meaning of life.
the science of what matter does by studying atoms and molecules.
speculation about the nature of atoms and molecules.
None of these
All of these
Answer: B 3

4. Theories are validated by
observations.
models.
laws.
experiments.
guesses.
Answer: D

5. Theories are validated by
observations.
models.
laws.
experiments.
guesses.
Answer: D

6. A brief statement that summarizes past observations and predicts future ones is called a
scientific theory.
scientific law.
hypothesis.
fact.
experiment.
Answer: B

7. A brief statement that summarizes past observations and predicts future ones is called a
scientific theory.
scientific law.
hypothesis.
fact.
experiment.
Answer: B

8. The scientific method emphasizes
observations and experimentation.
facts and scientific laws.
theories and opinions.
hypotheses and models.
None of the above
Answer: A

9. The scientific method emphasizes
observations and experimentation.
facts and scientific laws.
theories and opinions.
hypotheses and models.
None of the above
Answer: A

10. Which term best fits the following definition: “A theory before it has become well established”?
Observation
Scientific method
Scientific law
Scientific theory
Hypothesis
Answer: E

11. Which term best fits the following definition: “A theory before it has become well established”?
Observation
Scientific method
Scientific law
Scientific theory
Hypothesis
Answer: E

12. Which of the following would NOT be considered matter?
Water
Sugar
Light
Gasoline
Sand
Answer: C

13. Which of the following would NOT be considered matter?
Water
Sugar
Light
Gasoline
Sand
Answer: C

14. What is the first step in the scientific method?
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.
Answer: A

15. What is the first step in the scientific method?
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.
Answer: A

16. The connections that hold atoms to each other are called
sticky atoms.
strong attachments.
chemical bonds.
molecular bonds.
attractive forces.
Answer: C

17. The connections that hold atoms to each other are called
sticky atoms.
strong attachments.
chemical bonds.
molecular bonds.
attractive forces.
Answer: C

18. All matter contains the same mass.
Which of the following statements best describes the Law of Conservation of Mass?
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.
Mass can be either created or saved in a chemical reaction.
Answer: D

19. All matter contains the same mass.
Which of the following statements best describes the Law of Conservation of Mass?
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.
Mass can be either created or saved in a chemical reaction.
Answer: D

20. Which of the following can be classified as matter?
Lead
Salt
Car
Chair
All of the above
Answer: E

21. Which of the following can be classified as matter?
Lead
Salt
Car
Chair
All of the above
Answer: E

22. The ability to work hard The ability to do calculations Loyalty
Which of the following are important qualities of a successful chemist?
Curiosity
The ability to work hard
The ability to do calculations
Loyalty
a, b, and c above
Answer: E

23. The ability to work hard The ability to do calculations Loyalty
Which of the following are important qualities of a successful chemist?
Curiosity
The ability to work hard
The ability to do calculations
Loyalty
a, b, and c above
Answer: E

24. Which one of the following scientists stated and studied the Law of Conservation of Mass?
Dalton
Lavoisier
Proust
Rutherford
Aristotle
Answer: B

25. Which one of the following scientists stated and studied the Law of Conservation of Mass?
Dalton
Lavoisier
Proust
Rutherford
Aristotle
Answer: B

26. Which scientist proposed that all matter was composed of small, indestructible particles called atoms?
Dalton
Lavoisier
Proust
Rutherford
Aristotle
Answer: A

27. Which scientist proposed that all matter was composed of small, indestructible particles called atoms?
Dalton
Lavoisier
Proust
Rutherford
Aristotle
Answer: A

28. Which of the following is a chemical?
Air
Shampoo
Water
Turpentine
All of the above
Answer: E

29. Which of the following is a chemical?
Air
Shampoo
Water
Turpentine
All of the above
Answer: E

30. What is the difference between a scientific hypothesis and a theory?
A scientific hypothesis can be scrutinized; a theory is widely accepted and never changes.
A hypothesis is a summary of observed behavior; a theory is an explanation of the behavior.
Once a hypothesis has been proven to be accurate, it becomes a theory.
A scientific hypothesis is a testable assumption; a theory is an accepted model used to more fully explain past observations and laws.
A hypothesis is a definite explanation for an observation; a theory is just an educated guess.
Answer: D

31. What is the difference between a scientific hypothesis and a theory?
A scientific hypothesis can be scrutinized; a theory is widely accepted and never changes.
A hypothesis is a summary of observed behavior; a theory is an explanation of the behavior.
Once a hypothesis has been proven to be accurate, it becomes a theory.
A scientific hypothesis is a testable assumption; a theory is an accepted model used to more fully explain past observations and laws.
A hypothesis is a definite explanation for an observation; a theory is just an educated guess.
Answer: D

32. Which of the following is an example of a scientific theory?
The addition of battery acid to sugar results in the formation of a black substance and smoke.
Gases consist of molecules in constant random motion.
The burning of wood results in a flame, heat, smoke, and ash.
Copper metal conducts electricity.
None of the above
Answer: B

33. Which of the following is an example of a scientific theory?
The addition of battery acid to sugar results in the formation of a black substance and smoke.
Gases consist of molecules in constant random motion.
The burning of wood results in a flame, heat, smoke, and ash.
Copper metal conducts electricity.
None of the above
Answer: B

34. Which of the following is an example of an observation?
Energy may be converted from one form to another, 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
Answer: C

35. Which of the following is an example of an observation?
Energy may be converted from one form to another, 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
Answer: C

36. Which of the following is a scientific law?
Energy may be converted from one form to another, 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.
At absolute zero, the motion of all atoms stops.
None of the above
Answer: A

37. Which of the following is a scientific law?
Energy may be converted from one form to another, 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.
At absolute zero, the motion of all atoms stops.
None of the above
Answer: A

38. Which scientist disproved the existence of Phlogiston?
Dalton
Lavoisier
Proust
Rutherford
Aristotle
Answer: B

39. Which scientist disproved the existence of Phlogiston?
Dalton
Lavoisier
Proust
Rutherford
Aristotle
Answer: B

40. Which of the following statements is FALSE?
The scientific method is a way of learning that uses observations and experimentation.
An observation is an educated guess.
A hypothesis is a tentative explanation of a series of observations.
A scientific law synthesizes past observations and predicts future ones.
None of the above
Answer: B

41. Which of the following statements is FALSE?
The scientific method is a way of learning that uses observations and experimentation.
An observation is an educated guess.
A hypothesis is a tentative explanation of a series of observations.
A scientific law synthesizes past observations and predicts future ones.
None of the above
Answer: B

42. The state of the substance at room temperature
The kinds of atoms that form molecules of a substance and the way they are arranged determine which of the following?
The state of the substance at room temperature
The way a substance tastes
The odor of the substance
All of the above
None of the above
Answer: D

43. The state of the substance at room temperature
The kinds of atoms that form molecules of a substance and the way they are arranged determine which of the following?
The state of the substance at room temperature
The way a substance tastes
The odor of the substance
All of the above
None of the above
Answer: D

44. Which of the following statements is/are true?
Chemicals can only be found in the laboratory.
Chemicals make up virtually everything we come in contact with.
All chemicals are dangerous.
Ordinary things are made of chemicals.
Both b and d are true.
Answer: E

45. Which of the following statements is/are true?
Chemicals can only be found in the laboratory.
Chemicals make up virtually everything we come in contact with.
All chemicals are dangerous.
Ordinary things are made of chemicals.
Both b and d are true.
Answer: E

46. Which of the following scientists said that the most important idea in all human knowledge is that all things are made of atoms?
Proust
Feynman
Rutherford
Lavoisier
Dalton
Answer: B

47. Which of the following scientists said that the most important idea in all human knowledge is that all things are made of atoms?
Proust
Feynman
Rutherford
Lavoisier
Dalton
Answer: B