The identity of a substance (chemical compound) is defined by his chemical formula and molecular structure.
Chemical composition, chemical reactions, color, crystalline structure, melting point, boiling point, hardness, odor, magnetic properties, etc.
It does change its physical look but it does not change chemically.
density
Many physical changes will not alter the identity. However, some physical changes, such as heating or cooling will result in phase changes and so the identity will be different. While ice and water are chemically the same, they are not identical forms of the substance.
Melting ice to get water, or boiling water to get steam, doesn't change the identity of H2O.
when a pure substance undergoes a chemical change it is no longer that same substance. A chemical change changes the identity of the substance. Hope i helped
The identity of a substance (chemical compound) is defined by his chemical formula and molecular structure.
No, a physical property DOES NOT change the identity of a substance. That would be a chemical property which DOES change the identity.
By density
The identity of the substance reamain unchanged.
It does change its physical look but it does not change chemically.
density
A physical change is when a substance changes, but still keeps its identity. When a chemical change occurs, the substance changes its identity.
"an is an ionic"
Appearance
Many physical changes will not alter the identity. However, some physical changes, such as heating or cooling will result in phase changes and so the identity will be different. While ice and water are chemically the same, they are not identical forms of the substance.
If that substance is an element, the smallest part is the atom which, if broken down further into atomic particles, loses its identity.
It can be observed without changing the identity of the object.