In a physical change, a substance’s _____ changes but it remains the ______ substance.
In a physical change, a substance's appearance changes but it remains the same substance.
In a physical change, a substance's physical state or appearance changes, but it remains the same substance.
In a physical change, a substance's PHYSICAL PROPERTIES change but it remains the SAME substance.
To understand this concept, we first need to clarify what a physical change is. A physical change refers to a transformation in the physical properties of a substance without changing its chemical composition or identity. It involves changes in characteristics such as size, shape, phase, or state, without any modification in the fundamental chemical structure or arrangement of atoms.
For example, let's consider the physical change of melting ice. When we heat solid ice, it transforms into liquid water. In this process, the physical properties of the substance, such as its shape and state, change. However, the chemical composition of the matter remains the same, meaning it is still water. The ice does not turn into a different substance with new chemical properties.
In summary, during a physical change, a substance's physical properties may alter, but it remains the same substance with its original chemical identity intact.