Multiple Choice. Identify the choice that best completes the statement or answers the question. 18) Mendeleev created the first periodic table by arra...
Periodic Table Test-PH Multiple Choice Identify the choice that best completes the statement or answers the question. 18) Mendeleev created the first periodic table by arranging elements in order of A) decreasing atomic mass. B) increasing atomic mass. C) increasing atomic number. D) increasing melting points and densities. 19) How did chemists change Mendeleev’s periodic table in the early 1900s? A) They included chemical properties such as bonding power. B) They included physical properties such as melting point and density. C) They used atomic mass instead of atomic number to organize the elements. D) They used atomic number instead of atomic mass to organize the elements. 20) From an element’s location in the periodic table, you can predict A) its properties. B) its chemical name. C) its chemical symbol. D) when it was discovered. 21) Which of these statements about a column of the periodic table is true? A) The elements have similar properties. B) The elements have a wide range of properties. C) The elements have the same atomic number. D) The elements have the same atomic mass. 22) The factor that determines how an atom interacts with other atoms is its A) number of protons. B) number of neutrons. C) atomic mass. D) number of valence electrons. 23) Which of the following have the same number and arrangement of valence electrons? A) the elements in a period B) the elements in a group C) the elements having similar atomic masses D) the elements having similar atomic numbers 24) In the periodic table, the most reactive metals are found A) in Group 1, the first column on the left. B) in Period 1, the first row across the top. C) in Groups 13 through 16 in the center. D) in Periods 6 and 7 at the bottom. 25) Which group of elements always have two valence electrons in their atoms? A) transition metals B) metal alloys C) alkaline earth metals D) alkali metals 26) Which group contains the most elements? A) metalloids B) nonmetals C) metals D) transition elements 27) At room temperature, more than half of the nonmetal elements are A) alloys. B) gases. C) liquids. D) solids. 28) The elements in a row of the periodic table A) are in the same family. B) have the same or nearly the same properties. C) have the same average atomic mass. D) are in the same period. 29) The elements in a column of the periodic table A) are in the same family. B) are in the same period. C) have the same atomic mass. D) have very similar chemical symbols. 30) What information in the periodic table indicates the number of protons in an atom? A) the position of the element in its column B) the element’s chemical symbol C) the element’s atomic number D) the element’s atomic mass 31) The atomic number of an element is based on the A) mass of its nucleus. B) number of electrons around its core. C) number of protons in its nucleus. D) number of neutrons in its nucleus.
32) The two most common alkaline earth metals are A) copper and zinc. B) iron and silver. C) sodium and potassium. D) calcium and magnesium. 33) Which of the following statements about transition metals is true? A) They are never found uncombined in nature. B) They are so similar that it’s often difficult to find differences between them. C) They are so soft that they can be cut with an ordinary knife. D) They are the most reactive of all the types of metals. 34) Which group of elements share characteristics with both metals and nonmetals? A) salts B) metalloids C) halogens D) alloys 35) The elements that do not ordinarily form compounds are A) the carbon family. B) metals. C) halogens. D) noble gases. 36) Fluorine, chlorine, bromine, and iodine are part of a group called A) noble gases. B) metalloids. C) halogens. D) alkali metals. Completion Complete each statement. 37) Mendeleev discovered that periodic patterns appeared when he arranged the elements in order of increasing ____________________. 38) The property of an element that indicates the number of protons in its atoms is the ____________________. 39) A column of elements in the periodic table is called a group, or ____________________. 40) The electrons in an atom that are involved in forming chemical bonds are called ____________________. 41) Elements that transmit electricity and heat easily are called good ____________________. 42) The chemical reactivity of metals tends to ____________________ from left to right across the periodic table. 43) Some elements on the right side of the periodic table form molecules of two atoms each, which are called ____________________ molecules. 44) Nonmetals are ____________________ conductors of heat and electricity. 45) In the 1800s, Dmitri Mendeleev organized the first truly useful ____________________. 46) An element’s ____________________ can be predicted from its location in the periodic table. 47) Each chemical element is given a specific ____________________ that usually consists of one or two letters. 48) Elements in Group 1 have ____________________ valence electron(s). 49) Brass is a(n) ____________________ formed by mixing copper and zinc. 50) A substance that will conduct electricity only under certain conditions is called a ____________________.
