Which type of change occurs once the ice cube melts?

• A. Chemical change
• B. Physical change
• C. Nuclear change
• D. No change

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the difference between physical and chemical changes. A physical change affects the form or appearance of a substance but does not change its chemical composition.
2. Step 2: Recognize that melting ice involves changing water from solid (ice) to liquid (water) without altering the molecular structure of H\_2O.
3. Step 3: Note that in a chemical change, new substances with different chemical properties are formed, which does not happen when ice melts.
4. Step 4: Consider nuclear changes, which involve changes in the nucleus of atoms, such as radioactive decay, and are unrelated to melting ice.
5. Step 5: Conclude that since melting ice only changes the state of matter and not the chemical identity, it is a physical change.