* No new substances are formed: Blending simply changes the size and shape of the food particles. The chemical composition of the food remains the same. For example, blending an apple doesn't change the sugars, fiber, or vitamins present.

* Change is reversible: You can often reverse the change by allowing the blended food to settle or by separating the solids from the liquid.

* Change doesn't affect the chemical properties: The food still has the same taste, smell, and nutritional value after blending.

Chemical changes involve the formation of new substances with different properties. For example, burning wood is a chemical change because it produces ash, carbon dioxide, and other substances.