The answer is
Physical properties: Properties that do not change the chemical nature of matter
Chemical properties: Properties that do change tha chemical nature of matter
Examples of physical properties are: color, smell, freezing point, boiling point, melting point, infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density. There are many more examples. Note that measuring each of these properties will not alter the basic nature of the substance.
Examples of chemical properties are: heat of combustion, reactivity with water, PH, and electromotive force.
The solution shows only a small change in its pH when a strong acid or base is added and the solution resists change in its pH only when a weak acid or base is added to it are the characteristic properties the buffered solutions possess.
Options B and C
<u>Explanation:</u>
A solution is precipitated by the presence of weaker acid and its joint base (or vice versa). Buffer solutions are used to maintain the pH level of a chemical reaction at a constant level.
The solution shows only a small change in its pH when small amount of strong base or acid is added. Solutions resist any change in its pH when a weak base or acid is added. The buffer solution's pH is affected only when a certain concentration of bases or acids is added.
Answer:
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