HOMOGENEOUS VS. HETEROGENEOUS MATTER
Classify the following as either homogeneous or heterogeneous.

1.    flat soft drink (no bubbles)                                9.    air (with smog)

2.    chocolate chip ice cream                                    10.    paint

3.    Italian salad dressing                                        11.    alcohol

4.    sugar                                                              12.    iron

5.    soil                                                                 13.    beach sand

6.    aluminum foil                                                  14.    pure air

7.    black coffee                                                     15.    chunky spaghetti sauce

8.    sugar water
--------------------------------------------------------------------------------------------------------------------PURE SUBSTANCES VS. MIXTURES
Classify the following as pure substances or mixtures.

1.    sodium                                                            11.    iron

2.    water                                                              12.    salt water

3.    soil                                                                 13.    chocolate chip ice cream

4.    coffee                                                              14.    nitrogen

5.    oxygen                                                            15.    eggs

6.    70% isopropyl alcohol                                      16.    blood

7.    carbon dioxide                                                 17.    table salt

8.    cake batter                                                       18.    nail polish

9.    air                                                                  19.    milk

10.    chicken noodle soup                                       20.    soda

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