A property of matter that can be observed without changing the matter into a new substance is known as _?

A property of matter that can be observed without changing the matter into a new substance is known as a physical property.

To determine the physical properties of matter, you can gather information through observations or experiments without altering the substance chemically. Some examples of physical properties include:

1. Color: Observe the color of the substance.
2. Density: Measure the mass of a particular volume of the substance.
3. Odor: Smell the substance to determine its odor.
4. Melting point: Determine the temperature at which the substance changes from a solid to a liquid state.
5. Boiling point: Identify the temperature at which the substance changes from a liquid to a gas state.
6. Solubility: Determine if the substance dissolves in a particular solvent.
7. Conductivity: Test the ability of the substance to conduct heat or electricity.
8. Magnetism: Determine if the substance is attracted to a magnetic field.

These are just a few examples, and there are many other physical properties that can be observed without changing the substance into a new substance.