Chemical Properties of, & Changes in Matter

A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity

A chemical change, also known as a chemical reaction, involves a change in a substance’s composition.

A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another.

• Gas bubbles appear

• Change of smell and/or taste

• Change of color (for example, silver to reddish-brown when iron rusts)

• Energy change: Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat

• Production of Light

• Formation of a Precipitate

In a chemical reaction, reactants form products.

The law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction; it is conserved.