The Chemical World - Introduction to Chemistry | CHM 1025, Study notes of Chemistry

Download The Chemical World - Introduction to Chemistry | CHM 1025 and more Study notes Chemistry in PDF only on Docsity! © 2015 Pearson Education, Inc. Chapter 1 The Chemical World Laurie LeBlanc Cuyamaca College Clicker Questions © 2015 Pearson Education, Inc. A. the mystical search for the meaning of life. B. the science of what matter does by studying atoms and molecules. C. speculation about the nature of atoms and molecules. D. None of these E. All of these Chemistry is © 2015 Pearson Education, Inc. A. observations. B. models. C. laws. D. experiments. E. guesses. Theories are validated by © 2015 Pearson Education, Inc. A. scientific theory. B. scientific law. C. hypothesis. D. fact. E. experiment. A brief statement that summarizes past observations and predicts future ones is called a © 2015 Pearson Education, Inc. A. scientific theory. B. scientific law. C. hypothesis. D. fact. E. experiment. A brief statement that summarizes past observations and predicts future ones is called a © 2015 Pearson Education, Inc. A. Observation B. Scientific method C. Scientific law D. Scientific theory E. Hypothesis Which term best fits the following definition: “A theory before it has become well established”? © 2015 Pearson Education, Inc. A. Observation B. Scientific method C. Scientific law D. Scientific theory E. Hypothesis Which term best fits the following definition: “A theory before it has become well established”? © 2015 Pearson Education, Inc. A. Water B. Sugar C. Light D. Gasoline E. Sand Which of the following would NOT be considered matter? © 2015 Pearson Education, Inc. A. Observe some aspect of nature. B. Develop a scientific hypothesis. C. Design a detailed experiment. D. Check the results in triplicate. E. Develop a scientific law to summarize observations. What is the first step in the scientific method? © 2015 Pearson Education, Inc. A. sticky atoms. B. strong attachments. C. chemical bonds. D. molecular bonds. E. attractive forces. The connections that hold atoms to each other are called © 2015 Pearson Education, Inc. A. sticky atoms. B. strong attachments. C. chemical bonds. D. molecular bonds. E. attractive forces. The connections that hold atoms to each other are called © 2015 Pearson Education, Inc. A. Lead B. Salt C. Car D. Chair E. All of the above Which of the following can be classified as matter? © 2015 Pearson Education, Inc. A. Lead B. Salt C. Car D. Chair E. All of the above Which of the following can be classified as matter? © 2015 Pearson Education, Inc. A. Curiosity B. The ability to work hard C. The ability to do calculations D. Loyalty E. a, b, and c above Which of the following are important qualities of a successful chemist? © 2015 Pearson Education, Inc. A. Dalton B. Lavoisier C. Proust D. Rutherford E. Aristotle Which one of the following scientists stated and studied the Law of Conservation of Mass? © 2015 Pearson Education, Inc. A. Dalton B. Lavoisier C. Proust D. Rutherford E. Aristotle Which scientist proposed that all matter was composed of small, indestructible particles called atoms? © 2015 Pearson Education, Inc. A. Dalton B. Lavoisier C. Proust D. Rutherford E. Aristotle Which scientist proposed that all matter was composed of small, indestructible particles called atoms? © 2015 Pearson Education, Inc. A. A scientific hypothesis can be scrutinized; a theory is widely accepted and never changes. B. A hypothesis is a summary of observed behavior; a theory is an explanation of the behavior. C. Once a hypothesis has been proven to be accurate, it becomes a theory. D. A scientific hypothesis is a testable assumption; a theory is an accepted model used to more fully explain past observations and laws. E. A hypothesis is a definite explanation for an observation; a theory is just an educated guess. What is the difference between a scientific hypothesis and a theory? © 2015 Pearson Education, Inc. A. A scientific hypothesis can be scrutinized; a theory is widely accepted and never changes. B. A hypothesis is a summary of observed behavior; a theory is an explanation of the behavior. C. Once a hypothesis has been proven to be accurate, it becomes a theory. D. A scientific hypothesis is a testable assumption; a theory is an accepted model used to more fully explain past observations and laws. E. A hypothesis is a definite explanation for an observation; a theory is just an educated guess. What is the difference between a scientific hypothesis and a theory? © 2015 Pearson Education, Inc. A. The addition of battery acid to sugar results in the formation of a black substance and smoke. B. Gases consist of molecules in constant random motion. C. The burning of wood results in a flame, heat, smoke, and ash. D. Copper metal conducts electricity. E. None of the above Which of the following is an example of a scientific theory? © 2015 Pearson Education, Inc. Which of the following is an example of an observation? A. Energy may be converted from one form to another, but the total quantity of energy remains constant. B. Gases consist of molecules in constant random motion. C. The burning of wood results in a flame, heat, smoke, and ash. D. A pure compound always contains definite or constant proportions of elements by mass. E. None of the above © 2015 Pearson Education, Inc. Which of the following is a scientific law? A. Energy may be converted from one form to another, but the total quantity of energy remains constant. B. Gases consist of molecules in constant random motion. C. The burning of wood results in a flame, heat, smoke, and ash. D. At absolute zero, the motion of all atoms stops. E. None of the above © 2015 Pearson Education, Inc. Which of the following is a scientific law? A. Energy may be converted from one form to another, but the total quantity of energy remains constant. B. Gases consist of molecules in constant random motion. C. The burning of wood results in a flame, heat, smoke, and ash. D. At absolute zero, the motion of all atoms stops. E. None of the above © 2015 Pearson Education, Inc. A. The scientific method is a way of learning that uses observations and experimentation. B. An observation is an educated guess. C. A hypothesis is a tentative explanation of a series of observations. D. A scientific law synthesizes past observations and predicts future ones. E. None of the above Which of the following statements is FALSE? © 2015 Pearson Education, Inc. A. The scientific method is a way of learning that uses observations and experimentation. B. An observation is an educated guess. C. A hypothesis is a tentative explanation of a series of observations. D. A scientific law synthesizes past observations and predicts future ones. E. None of the above Which of the following statements is FALSE? © 2015 Pearson Education, Inc. A. The state of the substance at room temperature B. The way a substance tastes C. The odor of the substance D. All of the above E. None of the above The kinds of atoms that form molecules of a substance and the way they are arranged determine which of the following? © 2015 Pearson Education, Inc. A. Chemicals can only be found in the laboratory. B. Chemicals make up virtually everything we come in contact with. C. All chemicals are dangerous. D. Ordinary things are made of chemicals. E. Both b and d are true. Which of the following statements is/are true? © 2015 Pearson Education, Inc. A. Proust B. Feynman C. Rutherford D. Lavoisier E. Dalton Which of the following scientists said that the most important idea in all human knowledge is that all things are made of atoms? © 2015 Pearson Education, Inc. A. Proust B. Feynman C. Rutherford D. Lavoisier E. Dalton Which of the following scientists said that the most important idea in all human knowledge is that all things are made of atoms?