1-C. Chemistry is the scientific study of the structure of substances and how they react when combined or in contact with one another.Chemistry is the scientific study of the structure of substances and how they react when combined or in contact with one another.
2-C. Regarding the process of making vinegar, it is made by allowing air to react with alcohol of some type.Regarding the process of making vinegar, it is made by allowing air to react with alcohol of some type.