Page 234 - Science Course 1 (Book 1)
P. 234

Mo6-L5b: How are Metals Grouped?






                               Key Concept                                         SUMMARY
                           How Metals are Grouped?                            How Metals are Grouped?
                                                                      Alkali metals and alkaline earth metals
                 What are the group of metals in the periodic table?  react easily with other elements. These
                                                                       metals make up groups 1 and 2 on the
                                                                                  periodic table.

















                                                                     Transition elements make up groups
                                                                     3-12 and the lanthanide and actinide
                                                                     series on the periodic table.













                 Mo6-L5: Vocabulary Review

               Directions: Each of the statements below is false. Change the underlined word(s) to make each statement
               true. Write your changes on the lines provided.

                      alkali metal         alkaline earth metal         density       ductility

                      luster               malleability                 metal         transition element

                                       1. A (n) alkaline earth metal is an element in groups 3–12 of the periodic table.
                                       2. Malleability is the ability of a metal to reflect light.

                                       3. The mass per unit volume of a substance is its ductility.
                                       4. Luster is the ability of a substance to be pulled into thin wires.

                                       5. A(n) nonmetal is a good conductor of electricity and thermal energy.
                                       6. A(n) transition element is an element in group 2 of the periodic table;

                                            it has properties similar to those of the alkali metals.
                                       7. A(n) density is an element in group 1 of the periodic table.

                                       8. Metal is the ability of a substance to be hammered or rolled into sheets.









                                                                                                                  227
   229   230   231   232   233   234   235   236   237   238   239