Question

Which of the following examples is considered a physical change? Select all that apply.

A) boiling water
B) slicing potatoes into fries
C) freezing juice to make ice pops
D) food rotting on the counter

Answer 1

Boiling water, slicing potatoes into fries, and freezing juice to make ice pops are all examples of physical changes because they involve altering the state or form of a substance without changing its chemical composition.

Step-by-step explanation:

The student's question is about identifying which examples are considered physical changes. A physical change is one in which the form of matter is altered but one substance is not transformed into another.

• A) Boiling water is a physical change because water changes its state from liquid to gas without changing its chemical composition.
• B) Slicing potatoes into fries is a physical change because the potato's physical shape is altered, but the chemical structure remains the same.
• C) Freezing juice to make ice pops is also a physical change because the juice changes from liquid to solid form without changing its chemical composition.
• D) Food rotting on the counter is a chemical change since it involves the breakdown of food substances into new substances through a chemical reaction.

In summary, options A, B, and C are all physical changes because they involve changes of state or form without altering the substances chemically.