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Which of the following phrases best describes a chemical change?
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1. Intro to General Chemistry
Physical & Chemical Changes
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Which type of change occurs once the ice cube melts?
A
Chemical change
B
Physical change
C
Nuclear change
D
No change
Guida verificata passo dopo passo1
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.
Step 2: Recognize that melting ice involves changing water from solid (ice) to liquid (water) without altering the molecular structure of H\_2O.
Step 3: Note that in a chemical change, new substances with different chemical properties are formed, which does not happen when ice melts.
Step 4: Consider nuclear changes, which involve changes in the nucleus of atoms, such as radioactive decay, and are unrelated to melting ice.
Step 5: Conclude that since melting ice only changes the state of matter and not the chemical identity, it is a physical change.
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