What is the outcome of all chemical changes when two substances are combined?

A new substance forms with identical properties.
The two substances release an odor.
The two substances change color.
A new substance forms with different properties.

for E D G E N U I T Y PPL its: a new substance forms with different properties

A new substance forms with different properties.

Explanation:

When two different chemical substances are combined, they form new substances with different properties. The properties may be modified and the substance formed may exhibit better characteristic than individual properties of its components. For example, when sodium and chlorine combine, they form sodium chloride. Sodium chloride has different properties than any of the constituents.

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