CHEMICAL CHANGE
Changes that matter undergo based on their characteristics
WHAT IS A CHEMICAL CHANGE?
A chemical change refers to a process in which one or more substances are transformed into different
substances with new properties. This change is not easily reversible.
EXAMPLES OF CHEMICAL CHANGES:
Combustion: The burning of wood, paper, or any other material leads to the formation of new
substances, such as ash and smoke.
Oxidation: When iron rusts, it undergoes a chemical change due to the reaction with oxygen in the air.
Digestion: The breakdown of food in our bodies involves various chemical reactions that transform the
food into nutrients.
EXAMPLES OF CHEMICAL CHANGES:
Combustion: The burning of wood, paper, or any other material leads to the formation of new
substances, such as ash and smoke.
Oxidation: When iron rusts, it undergoes a chemical change due to the reaction with oxygen in the air.
Digestion: The breakdown of food in our bodies involves various chemical reactions that transform the
food into nutrients.
CHARACTERISTICS OF CHEMIICAL CHANGES
Formation of New Substances: Chemical changes create new substances with different properties than
the original materials.
Energy Change: Chemical reactions often involve the release or absorption of energy in the form of heat,
light, or sound.
Irreversibility: Unlike physical changes, chemical changes are usually not easily reversible. Once a
chemical change occurs, it is challenging to return to the original substances.
CHEMICAL VS. PHYSICAL CHANGES
Physical changes affect form but not chemical identity.
Chemical changes result in new chemical products.
PAPER DEMONSTRATION
I will cut the paper and say its physical change
I will burn the paper and say it’s chemical change
