I. A chemical change breaks bonds, forms new substances and is irreversible. Ii. Reordering the intermolecular forces is indicative of a chemical change. Iii. During a physical change the substance remains the same, no bonds are broken, and the process is reversible. Iv. Permanently altering the makeup of the substance is characteristic of a physical change. Which conclusion(s) best elaborate(s) on the difference(s) between a chemical change and a physical change?.



Answer :

The first and third statements best elaborates the difference between physical and chemical change.

what is the difference between physical and chemical change?

When a substance changes physically, its makeup doesn't alter even while the molecules are rearranged. Physical change is just transient.  The only things that are affected by physical change are things like shape, size, etc. Very little to no energy is absorbed during a physical change.

 eg;-Water freezing, wax melting, water boiling, 

Typically, energy is not created during physical changes. There is no creation of new substance during a physical change. The original material can be recovered if a physical alteration is made.

When a substance changes chemically, its molecular structure completely alters. As a result, new chemicals are created during chemical reactions. Chemical modification of the substance's constitution as well as its physical and chemical qualities

Energy is absorbed during a chemical reaction and is also released. Food digestion, coal combustion, rusting, and other processes are a few instances of chemical change. Energy is typically produced through chemical reactions (which can be in the form of heat, light, sound, etc.) One or more new substances always follow a chemical transition (s). Chemical alterations cannot be undone; the original substance cannot be obtained.

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