Ionization energy is the energy required to remove an electron from an atom in the gas phase. In this graph, the ionization energy is shown as a function of the atomic number for the first twenty elements in the periodic table.
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Ionization energy is the energy required to remove an electron from an atom in the gas phase. In this graph, the ionization energy is shown as a function of the atomic number for the first twenty elements in the periodic table.
1. The independent variable on this graph isO a. Ionization Energy
O b. Atomic Number
O c. Number of Electrons
O d. Electron Orbitals2. Elements 3, 11, and 19 require the lowest amount of ionization energy. What do these elements have in common?
O a. They have one electron in their outer orbital.
O b. They lose a proton, which makes them neutral.
O c. Their outer orbital is full.
O d. They have an extra proton, which makes them neutral.3. Elements 2, 10, and 18 require the highest amount of ionization energy. What do these elements have in common?
O a. They have one electron in their outer orbital.
O b. They lose a proton, which makes them neutral.
O c. Their outer orbital is full.
O d. They have an extra proton, which makes them neutral.4. Elements 2, 10, and 18 show a general trend of decreasing ionization energy as you go from left to right on the graph. Which of these is the best hypothesis explaining the cause of this trend?
O a. The outer orbital gets farther from the nucleus as you go from left to right.
O b. The outer orbital gets closer to the nucleus as you go from left to right.
O c. The outer electron moves slower as you go from left to right.
O d. The nucleus gets stronger as you go from left to right.5. If the pattern of the graph continues, what can be predicted about the ionization energy of element 21?
O a. The ionization energy of element 21 will be more than element 20.
O b. The ionization energy of element 21 will be less than element 21.
O c. The ionization energy of element 21 will be more than element 2.
O d. The ionization energy of element 21 will be the same as element 21.
6. Which of the following elements is a nonmetal?
O a. fluorineUse the following information to answer questions 7 - 10.
O b. copper
O c. magnesium
O d. sodium
This graph illustrates the relationship between the force and acceleration of objects.
Mass is the amount of matter an object contains. Acceleration is a function of speed vs time. Force is a type of energy defined as any "push or pull" one object exerts on another object. The units of force are Newtons. When objects are moving, their force is a function of speed vs mass. Object B has more mass then object A.
7. What are the units of force?
O a. meters per second squared
O b. seconds
O c. Newtons
O d. pounds8. What force does object B have when its acceleration is 0.5 m/s2?
O a. 50N
O b. 75N
O c. 100N
O d. 125N9. Object B and object A are shown on the graph with 200N of force. At this point, the acceleration of object B is
O a. 3.0 m/s2
O b. less than object A
O c. greater than object A
O d. not shown on the graph10. Mass is defined as
O a. any "push or pull" one object exerts on another object
O b. the "weight" of an object
O c. the amount of matter in an object
O d. a type of energy
11. According to this graph, a piece of timber containing one-eighth of the amount of carbon-14 found in a living tree died about how many years ago?
O a. 5,700 years |
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