Page 110 - Science Course 2 (Book 1)
P. 110

Substances, Mixtures and Solutions Mo4-L2a:  How Are Substances,
                                                                  Compounds, and Mixtures Different?
               Lesson 2


                                                                  Heterogeneous mixture
                                                                  is a mixture in which substances
                 In this topic, you will learn the following      are not evenly mixed.
                 lessons:

                 Mo.4-L2a: How Are Substances, Compounds, and
                                    Mixtures Different?

                                                                             Homogeneous mixture
                                                                             is a mixture in which two or more

                  Mo4-L2a     How Are Substances, Compounds,                 substances are evenly mixed on the
                                                                             atomic level but not bonded together.
                                   and Mixtures Different?
                KEY CONCEPTS:
                1. How do substances and mixtures differ?
                2. How can you determined whether a mixture is
                    homogeneous or heterogeneous?
                3. In what two ways do compounds differ from
                    mixtures?



                            Vocabulary A-Z                            Homogeneous             Heterogeneous
                            Let us learn some vocabulary



                Substance                                         Solution
                is matter that is always made up of the same      is another name for a homogeneous mixture.
                combination of atoms.
                                                                                 Add more        Add more
                   H                 11                                       copper sulphate copper sulphate

                          H         Na
                      C
                  H                Sodium          o
                          H       22.98976928     H    H


                Mixture
                is two or more substances that are physically
                blended but are not chemically bonded together.
                                                                    Dilute copper  Concentrated      Saturated
                                                                      sulphate        copper          copper
                                                                      solution        sulphate       sulphate
                                                                                      solution       solution





                        Mixture                 Separated













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