SCH4C - CAT Name: Part A: Multiple Choice Questions 1. Which of the following is considered an inference from an observation? a. The precipitate was yellow. b. The metal sank in the water, it must be iron. C. A gas was released when lithium was dropped into water. d. Bubbles form from Alka-Seltzer tablets. 2. Which of the following is considered an observation? a. The doudy white liquid. b. The man wore a hard hat so he must be a construction worker. When copper metal is placed in a flame, it reacts with oxygen. d. The flame colour of sodium is yellow. 3. The process by which an unknown substance is identified is called a. quantitative analysis c deductive reasoning b. qualitative analysis d. spectroscopy 4. An element may have more than one atomic mass depending on which particular isotope it is. This is due to: a. varying numbers of protons b. varying numbers of electrons c varying numbers of neutrons d. heavier protons in the heavier isotopes 5. The line spectrum observed when an element is excited by flame or electricity is a result of: a. a quanta of energy released by moving electrons b. electrons undergoing transitions the absorption and release of energy d. all of these e. none of these 6. Which of the following is covalently bonded? a. NIF b. Nad C CHE d. NaOH C. Ne d. Chi 7. Which of the following is ionically bonded? a. NaOH b. Na metal 8. What happened to aluminum to form Al-ion? a. aluminum gained three protons b. aluminum lost three protons c. aluminum lost three electrons d. aluminum gained three electrons SCH4C - CAT Name: Part A: Multiple Choice Questions 1. Which of the following is considered an inference from an observation? a. The precipitate was yellow. b. The metal sank in the water, it must be iron. C. A gas was released when lithium was dropped into water. d. Bubbles form from Alka-Seltzer tablets. 2. Which of the following is considered an observation? a. The doudy white liquid. b. The man wore a hard hat so he must be a construction worker. When copper metal is placed in a flame, it reacts with oxygen. d. The flame colour of sodium is yellow. 3. The process by which an unknown substance is identified is called a. quantitative analysis c deductive reasoning b. qualitative analysis d. spectroscopy 4. An element may have more than one atomic mass depending on which particular isotope it is. This is due to: a. varying numbers of protons b. varying numbers of electrons c varying numbers of neutrons d. heavier protons in the heavier isotopes 5. The line spectrum observed when an element is excited by flame or electricity is a result of: a. a quanta of energy released by moving electrons b. electrons undergoing transitions the absorption and release of energy d. all of these e. none of these 6. Which of the following is covalently bonded? a. NIF b. Nad C CHE d. NaOH C. Ne d. Chi 7. Which of the following is ionically bonded? a. NaOH b. Na metal 8. What happened to aluminum to form Al-ion? a. aluminum gained three protons b. aluminum lost three protons c. aluminum lost three electrons d. aluminum gained three electrons