Which of the following is a common feature of chemical reactions?

• A. No energy change involved
• B. Formation of new substances with different chemical properties
• C. Atoms are destroyed during the reaction
• D. Change in physical state without altering chemical composition

Answer: (B)

Verified step by step guidance

1. Understand that a chemical reaction involves the transformation of substances into new substances with different chemical properties.
2. Recall that during chemical reactions, atoms are neither created nor destroyed; they are rearranged to form new molecules.
3. Recognize that energy changes usually occur during chemical reactions, either absorbed or released, so 'no energy change' is not a common feature.
4. Note that a change in physical state without altering chemical composition is a physical change, not a chemical reaction.
5. Conclude that the common feature of chemical reactions is the formation of new substances with different chemical properties.