One or more substances changing into new substances; commonly known as a chemical reaction.

One or more substances changing into new substances; commonly known as a chemical reaction.

• A. Physical Changes
• B. Physical Property
• C. Chemical Property
• D. Chemical Changes

Answer: (D)

Chemical changes occur when bonds are broken and formed, producing substances with different identities. The statement describes exactly that: one or more substances turning into new substances, which is what a chemical reaction is. In contrast, a physical change only alters form or state without creating new substances, so the identity stays the same. Physical properties describe how a substance behaves or appears without changing what it is, while chemical properties describe how a substance might react under certain conditions.

Chemical changes occur when bonds are broken and formed, producing substances with different identities. The statement describes exactly that: one or more substances turning into new substances, which is what a chemical reaction is. In contrast, a physical change only alters form or state without creating new substances, so the identity stays the same. Physical properties describe how a substance behaves or appears without changing what it is, while chemical properties describe how a substance might react under certain conditions.