Explain the difference between physical and chemical properties. Provide an example of each.

A physical property is when something can be observed or measured without being changed. A chemical property is when a substance undergoes a specific chemical change. Examples of physical property are color or density. Examples of chemical properties are flammability or heat of combustion.

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explanation:

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.