Physical & Chemical Changes
Chemical Change
A change in matter that produces one or more new substances
Products
The result of substances being combined in a chemical reaction.
Precipitates
When two liquid are combined together, but a solid is produced that solid is called a precipitate.
Combustion Burning
A chemical reaction between substances, usually including oxygen accompanied by giving off heat and or light.
Bubbles
Gas given off during a chemical reaction; may or may not have an odor. Sign of a chemical reaction.
Unexpected Color Change
New molecules created in a chemical reaction radiate light differently producing new colors.
Unexpected Temperature Change
Often times heat is released when elements or compounds are combined. This change is temperature proves a chemical reaction occurred.
Reactants
Substances that are combined to form products in a chemical reaction.
Physical Change
a change of matter from one form to another without a change in chemical properties
Physical Property
a characteristic that can be observed or measured without changing the identity of the substance
Chemical Property
a property of matter that describes a substance's ability to participate in chemical reactions
Chemical Reaction
the process by which one or more substances change to produce one or more different substances
Catalyst
A chemical that makes a chemical reaction happen faster.
