8 atonic mass unit read, write answers to your questions. (amu) : 8 metals Questions About the Periodictable. & transition metals Question Answer non metals . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 metalloids b. d. Figure 5 On this syn
REVIEW PACKET FOR CHAPTER 6 – PERIODIC TABLE
Name: Date:
SECTION 6.1 ORGANIZING THE ELEMENTS (pages155– 160) This section describes the development of the periodic table and explains the periodic law. It also describes the classification of elements into metals, nonmetals, and metalloids. Searching For An Organizing Principle (page 155) 1. How many elements had been identified by the year 1700? 2. What caused the rate of discovery to increase after 1700? 2. What did chemists use to sort elements into groups Mendeleev’s Periodic Table (page 156) 4. Who was Dmitri Mendeleev? 5. What property did Mendeleev use to organize the elements into a periodic table?
6. Is the following sentence true or false? Mendeleev used his periodic table to true predict the properties of undiscovered elements. ______________________
The Periodic Law (page 157) 7. How are the elements arranged in the modern periodic table? 8. Is the following statement true or false? The periodic law states that when elements are arranged in order of increasing atomic number, there is a periodic repetition of physical and chemical properties. ______________________ Metals, Nonmetals, and Metalloids (pages 158–160) 9. Explain the color coding of the squares in the periodic table in Figure 6.5.
10. Which property below is NOT a general property of metals: a. b. c. d.
ductile malleable poor conductor of heat high luster
11.
Where are the alkali metals, the alkaline earth metals, the halogens, and the noble gases located in the periodic table?
12.
Which of the following are symbols for representative elements: Na, Mg, Fe, Ni, Cl?
13.
Which of these metals isn’t a transition metal?
a. aluminum b. silver c. iron d. zirconium
14.
Identify each property below as more characteristic of a metal or a nonmetal. a. a gas at room temperature b. brittle c. malleable d. poor conductor of electric current e. shiny
15.
In general, how are metalloids different from metals and nonmetals?
16.
Write the symbol of the element or elements that fit each description.
a. a nonmetal in Group 4A b. the inner transition metal with the lowest atomic number c. all of the nonmetals for which the atomic number is a multiple of five d. a metal in Group 5A.
17.
In which pair of elements are the chemical properties of the elements most similar? Explain your reasoning. a. sodium and chlorine b. nitrogen and phosphorus c. boron and oxygen
18. The bar graph shows how many elements were discovered before 1750 and in each 50-year period between 1750 and 2000. a. In which 50-year discovered?
period
were
the
most
elements
b. How did Mendeleev’s work contribute to the discovery of elements?
c. What percent of the elements were discovered by 1900?
