CHAPTER 6 REVIEW The Periodic Table 1 In

CHAPTER 6 REVIEW The Periodic Table

` 1) In the modern periodic table, elements are ordered _______. A) according to decreasing atomic mass B) according to Mendeleev's original chart C) according to increasing atomic number D) based on when they were discovered

1) In the modern periodic table, elements are ordered _______. C) according to increasing atomic number

2) Mendeleev noticed that properties of elements appeared at regular intervals when the elements were arranged in order of increasing _______. A) density B) reactivity C) atomic number D) atomic mass

2) Mendeleev noticed that properties of elements appeared a regular intervals when the elements were arranged in order of increasing _______. D) atomic mass

3) The modern periodic law states that ___. A) no two electrons with the same spin can be found in the same place in an atom B) the physical and chemical properties of the elements are functions of their atomic number. C) electrons exhibit properties of both waves and particles D) the chemical properties of elements can be grouped according to periodicity but physical properties cannot

3) The modern periodic law states that ___. B) the physical and chemical properties of the elements are functions of their atomic number.

4) The discovery of the noble gases changed Mendeleev’s periodic table by adding a new_______. A) period B) series C) group d) sublevel or block

4) The discovery of the noble gases changed Mendeleev’s periodic table by adding a new_______. C) group

5) The most distinctive property of the noble gases is that they are ____. A) metallic B) radioactive C) metalloids D) largely unreactive

5) The most distinctive property of the noble gases is that they are ____. D) largely unreactive

6) Lithium, is the first element in Group 1, has an atomic number of 3. The second element in this group has an atomic number of ____ A) 4 B) 10 C) 11 D) 18

6) Lithium, is the first element in Group 1, has an atomic number of 3. The second element in this group has an atomic number of ____ C) 11

7) An isotope of fluorine has a mass number of 19 and an atomic number of 9 How many protons are in this atom? 9 How many neutrons are in this atom? 10 = 19 – 9

8) Samarium, Sm is a member of the lanthanide series. Identify the element just below samarium on the periodic table. Pu plutonium The atomic numbers of these two elements differ by how many units? 32

9) A certain isotope contains 53 protons, 78 neutrons and 54 electrons. What is its atomic number? 53 What is the mass of this atom? 53 + 78 = 131 What is this element? I = iodine Identify two other elements in that are in its group. F Cl Br At

10) In a modern periodic table, every element is a member of a horizontal row and a vertical column. Which one is the group, and which one is the period? Group = Period =

10) In a modern periodic table, every element is a member of a horizontal row and a vertical column. Which one is the group, and which one is the period? Group = vertical Period = horizontal

11)Explain the distinction between atomic mass and atomic number. Atomic Mass = Atomic Number =

11)Explain the distinction between atomic mass and atomic number. Atomic Mass = protons + neutrons Atomic Number = protons or electrons

12) In the periodic table, the atomic masses of Te and I decrease rather than increase, while their atomic numbers increase. This phenomena happens to other neighboring elements in the periodic table. Name two of these sets of elements.

12) In the periodic table, the atomic masses of Te and I decrease rather than increase, while their atomic numbers increase. This phenomena happens to other neighboring elements in the periodic table. Name two of these sets of elements. Cobalt and Nickel Uranium and Neptunium Plutonium and Americium

UNDERSTANDING CONCEPTS PART A 13) Which of the following is an example of periodicity? A) eating breakfast B) hitting a home run C) writing a letter D) sneezing

UNDERSTANDING CONCEPTS PART A 13) Which of the following is an example of periodicity? A) eating breakfast

14) All of the following elements are metals except _____. A) aluminum B) chlorine C) sodium D) copper

14) All of the following elements are metals except _____. B) chlorine

15) when chlorine gains an electron it ____. A) gets smaller B) is charged + C) gets larger D) stays the same size.

15) when chlorine gains an electron it ____. C) gets larger

16) ________ is credited with the discovering the periodic law. A) Linus Pauling B) Atremis Halogen C) Dmitri Mendeleev D) J. W. Drobereiner

16) ________ is credited with the discovering the periodic law. C) Dmitri Mendeleev

17) Chlorine, Iodine and _____ make up the halogen triad. A) bromine B) lithium C) sodium D) potassium

17) Chlorine, Iodine and _____ make up the halogen triad. A) bromine

18) One of the elements whose existence was predicted by Mendeleev was ______. A) aluminum B) silicon C) potassium D) germanium

18) One of the elements whose existence was predicted by Mendeleev was ______. D) germanium

19) The second row of the periodic table includes _____ elements. A) 2 B) 8 C) 18 D) 32

19) The second row of the periodic table includes _____ elements. B) 8

20) ______ is an un-reactive element. A) hydrogen B) chlorine C) helium D) sodium

20) ______ is an un-reactive element. C) helium

21) Which of the following is a transition element? A) gallium B) nickel C) aluminum D) tellurium

21) Which of the following is a transition element? B) nickel

22) All group 1 elements have _____. A) One valence electron B) one energy level C) unpredictable properties D) one electron

22) All group 1 elements have _____. A) One valence electron

23) In 1860, chemists could make which of the following statements about the known chemical elements. A) they all had identical properties B) some had similar properties C) they all had different properties D) they could not be grouped

23) In 1860, chemists could make which of the following statements about the known chemical elements. B) some had similar properties

24) Early scientists classified ______ as one of the coinage metals. A) lithium B) chlorine C) copper D) iron

24) Early scientists classified ______ as one of the coinage metals. C) copper

25) If the first and last elements in a triad have atomic masses of 7 and 39 respectively, then the atomic mass of the middle element is about _____. A) 23 B) 46 C) 15. 3 D) 32

25) If the first and last elements in a triad have atomic masses of 7 and 39 respectively, then the atomic mass of the middle element is about _____. A) 23

26) Mendeleev’s first periodic table consisted of _____ groups. A) 3 B) 18 C) 8 D) 2

26) Mendeleev’s first periodic table consisted of _____ groups. C) 8

27) Which of the following is not a periodic phenomenon? A) rising of the sun B) appearance of Halley’s Comet (every 76 years) C) ocean tides D) growth of a sun flower

27) Which of the following is not a periodic phenomenon? D) growth of a sun flower

28) When moving from left to right across the modern periodic table, the atomic numbers of the elements ____. A) do not change B) increase by one C) decrease by one D) are the same as the atomic masses

28) When moving from left to right across the modern periodic table, the atomic numbers of the elements ____. B) Increase by one

29) The modern periodic table is made up of _______ elements. A) 60 B) 118 C) 92 D) 25

29) The modern periodic table is made up of _______ elements. B) 118

30) In Dobereiner’s halogen triad, the density, boiling point, and melting point of the elements _______as atomic mass increases. A) stay the same B) increases C) double D) decrease