3. Kamir and Alexis are studying the properties of water. They conducted a variety of experiments to determine its physical and chemical properties. Of the tests the students conducted, which one illustrates a chemical property of water?
a. Salt dissolves in water
b. Oil and water do not mix
c. Paper floats in water
d. Water reacts with carbon dioxide to form acid solution
d. uses the word "reacts".
The answer is D.Water reacts with carbon dioxide to form acid solution
The test that illustrates a chemical property of water is option d. Water reacts with carbon dioxide to form an acid solution.
To determine which option illustrates a chemical property of water, let's first understand the difference between physical and chemical properties.
Physical properties are characteristics of a substance that can be observed or measured without changing the chemical composition of the substance. Examples of physical properties include color, density, boiling point, and solubility.
Chemical properties, on the other hand, describe how a substance interacts with other substances and can only be observed through a chemical change or reaction. Chemical properties involve the breaking or forming of chemical bonds and result in the transformation of the substance into something new.
Now, let's analyze the given options:
a) Salt dissolves in water: This demonstrates a physical property of water, specifically its solubility. Water's ability to dissolve many substances is a physical property.
b) Oil and water do not mix: This also exhibits a physical property of water. The inability of oil and water to mix is due to differences in their intermolecular forces and molecular structures.
c) Paper floats in water: This is another example of a physical property. The buoyancy of paper in water is due to the difference in density between the two substances.
d) Water reacts with carbon dioxide to form an acid solution: This option demonstrates a chemical property of water. When water reacts with carbon dioxide (CO2), it undergoes a chemical change and forms carbonic acid (H2CO3), resulting in an acid solution.
Therefore, the correct answer is d) Water reacts with carbon dioxide to form an acid solution, as it illustrates a chemical property of water.