Classify each of the following as an element, a compound, a homogeneous mixture, or a heterogeneous mixture: (a) water from a well, (b) argon gas, (c) sucrose, (d) a bottle of red wine, (e) chicken noodle soup, (f) blood flowing in a capillary, (g) ozone.

First, let’s identify the nature of each substance. (a) Water from a well: It may contain other impurities or substances dissolved in it. Thus, it's a heterogeneous mixture. (b) Argon gas: Argon is a noble gas present in the air we breathe. It's an element. (c) Sucrose: Sucrose is table sugar, composed of carbon, hydrogen, and oxygen atoms. It's a compound. (d) A bottle of red wine: It may contain particles that are not dissolved in it. So, it's a heterogeneous mixture. (e) Chicken noodle soup: As it has components like noodles, chicken pieces, vegetables which are not evenly distributed and can be separated out, it's a heterogeneous mixture. (f) Blood flowing in a capillary: Blood is composed of different particles like red cells, white cells, platelets floating in plasma. It's a heterogeneous mixture. (g) Ozone: Ozone is a type of oxygen molecule composed of three oxygen atoms. It's a compound.

Now that we analyzed the substance, we can formally classify them: (a) Water from a well - Heterogeneous Mixture (b) Argon gas - Element (c) Sucrose - Compound (d) A bottle of red wine - Heterogeneous Mixture (e) Chicken noodle soup - Heterogeneous Mixture (f) Blood flowing in a capillary - Heterogeneous Mixture (g) Ozone - Compound