Which of the following properties can change during a physical change?

Question

1. Shape.
2. PH level.
3. flammability.
4. reactivity.

Answer 1

During a physical change, properties that can change include:

1. Shape - Yes, this can change. For example, molding clay changes shape without altering its chemical composition.

The other properties listed (pH level, flammability, and reactivity) are associated with chemical changes:

2. PH level - This can change during a chemical reaction (like neutralization) but not during a physical change.

3. Flammability - This is a chemical property, which does not change during a physical change.

4. Reactivity - This is also a chemical property and remains unchanged during a physical change.

Therefore, the only property from your list that can change during a physical change is 1. Shape.