Quiz Standard 4 Answer Key Teacher Name: Quiz Generated On: 04-29-2016 1) The periodic is organized by A) atomic mass. B) atomic size. C) atomic number. D) atomic periodicity. E) None of the Explanation: The periodic table is organized by atomic number, by the increasing number of protons in each element. This was first ordered by Russian chemist Dimitri Mendeleev. 2) This section of the periodic is called a(n) A) group. B) period. C) series. D) set.
B) C) metalloids D) noble gases E) None of the above Explanation: Metals are the most conductive elements because of they easily lose valence electrons. The second best would be the metalloids, with non-metals and noble gases having little ability to conduct electricity. 18) All the elements of a family in the periodic table have what feature in common? A) They all have similar chemical properties. B) They all have the same number of protons in the nucleus. C) They are all located in the same horizontal row or period. D) They all have the same number of electrons in the electron cloud. E) None of the above Explanation: Elements of any family in the periodic table have the same number of valence electrons. Because of this they all have similar chemical properties. 19) The majority of elements found in the periodic table can be classified as A)
E) None of the above Explanation: The cap keeps the pressure of the gas in the bottle at a high level preventing carbon dioxide from leaving the solution. By keeping the pressure high, the solubility of carbon dioxide in the solution is increased. 20) As matter changes state from gas to liquid, which of these statements is true? A) The particles up. B) The particles slow down. C) The particles get farther apart. D) The attractive force between the particles decreases. E) None of the above Explanation: The particles slow down as matter changes state from a gas to a liquid. You could slow down the particles by reducing the temperature of the substance.
Bleach Detergent Ammonia What property do all three of these common household substances have in common? A) They are all acidic. B) They all taste sour. C) They all have a pH above 7. D) They all turn litmus paper red. E) None of the above Explanation: They all have a pH above 7. They all turn litmus paper blue, taste bitter, and are bases. 21) Lemon Juice Tums (antacid) Water Put all of the above household items in order from lowest to highest pH. A) Lemon juice, water, Tums B) Water, Tums, Lemon Juice C) Water, Lemon Juice, Tums
A) is common in juices B) can be found in the stomach C) can dissolve a copper penny D) includes many cleaners, like bleach E) None of the above Explanation: Only include many cleaners, like bleach. Acids are found in the stomach, in fruit juices, and dissolve metals. 29) BOTH acids and bases A) turn red litmus blue. B) are a component of soaps C) donate protons to solution. D) conduct electricity in water.
C) The light bulb would burn brightest in the strongest acid. D) The light bulb would not burn as acids do not conduct electricity. E) None of the above Explanation: The bulb would burn brightest in the strongest acid. The stronger the acid, the more ions produced in solution, and the better conductor it is. 34) According to this graph, a lake that has a pH level of 4 A) has no fish. B) has many C) has few rainbow trout. D) is healthy and thriving. E) None of the Explanation: This chart shows that a healthy lake has a pH of about 7. As this acidity increases, the pH will decrease. A lake with a ph level of only 4 has no fish. 35)