A chemical change alters the chemical makeup of a substance, creating a new substance with different properties through a chemical reaction where matter is neither created nor destroyed. Examples of chemical changes include fire and mixing baking soda and vinegar. A physical change only modifies a substance's size, shape, volume, or state of matter without chemically altering its makeup, such as melting ice, breaking glass, or chopping wood.

1. Physical and chemical changes By John Neff

2. Chemical changes A chemical change is the change of the chemical make up of a substance to make a new substance with different properties. When a chemical change is taking place it is called a chemical reaction. Matter cannot be created or destroyed during a chemical reaction.

3. examples of chemical reactions Examples of chemical reactions include: fire, mixing baking soda and vinegar, digesting food, ext.

4. Physical changes Physical changes are changes in size, shape, volume, or state of matter. This change does not change the chemical make up of the substance.

5. examples of physical changes Physical changes include: braking down rocks, melting ice, ripping paper, breaking glass, chopping wood, bending metal, ext.