Page 56 - 新思维科学学生用书7 样章
P. 56

2.6  Compounds and formulae



                         2.6  Compounds and formulae





                       In this topic you will:

                       •    learn about the differences between elements and compounds
                       •    learn how to name compounds
                       •    use symbols to represent compounds.




                       Getting started                                                            Key words

                       You have three minutes. Test your partner on the symbols for the           bonding

                       elements.                                                                  compound

                                                                                                  formula

                                                                                                  sodium
                                                                                                   chloride



















































                                                                                                                   55
   51   52   53   54   55   56   57   58   59   60   61