Physical and Chemical Properties

By: Joel Mundackal

Physical and Chemical Property definition

Physical property is used to characterize matter and energy and their interactions. Some examples are color, mass, density, and volume. Chemical property is used to characterize materials in reactions that change their identity. Some examples of Chemicals property is burns, rust, heat, and tarnish.

Physical and Chemical Change Definition

Physical changes are concerned with energy and states of matter. A physical change does not produce a new substance. Changes in state or phase (melting, freezing, vaporization, condensation, sublimation) are physical changes. Examples of physical changes include crushing a can, melting an ice cube, cutting a paper, and breaking a bottle.

Chemical changes take place on the molecular level. A chemical change produces a new substance. Examples of chemical changes include combustion (burning), cooking an egg, rusting of an iron pan, and mixing hydrochloric acid and sodium hydroxide to make salt and water.

Chemical Reactions

A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction. Examples of Chemical reaction are water displacement, color change, gas formation, and temperature change.

Reactants and Products in Chemical Reaction

In a chemical reaction, substances called reactants are changed into other substances called products. You can’t change one element into another in a chemical reaction — that happens in nuclear reaction. Instead, you create a new substance with chemical reactions.

Law of Conservation of Mass

Law of Conservation of Mass is a relation stating that in a chemical reaction, the mass of the products equals the mass of the reactants.