Question

Which statement best describes the difference between a physical change and a chemical change?

1. A chemical change results in a new element being formed, and a physical change results in a new compound being formed.
2. A physical change produces a new element, and a chemical change results in a bond breaking between atoms.
3. A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.
4. A chemical change does not result in a new substance being formed, whereas a physical change does.

Answer 1

In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.