1. A Physical Property is a property that can be observed without changing the make up of the substance. You just look at it - or measure it. Examples are: shape, color, odor, texture, temperature, density, taste, and melting point Properties Notes

2. Density Density is the mass of a substance per unit of volume. D = M mass Density is the mass of a substance per unit of volume. D = M mass V volume V volume Mass is in grams, volume in cm 3 so density is in g/cm 3 Mass is in grams, volume in cm 3 so density is in g/cm 3

3. A Chemical Property A Chemical Property is a property that depends on how a substance reacts with something else. Examples are: reacts with oxygen, burns in air, flammability, reacts with acid Examples are: reacts with oxygen, burns in air, flammability, reacts with acid Look for with or in Look for with or in

4. A Physical Change is a change in the general appearance of a substance, but the chemical composition does not change, it is still the same material. A Physical Change is a change in the general appearance of a substance, but the chemical composition does not change, it is still the same material. It is a change in a physical property: a change in size, shape, or form. It is a change in a physical property: a change in size, shape, or form. Examples are: a change from a solid to a liquid, tearing a paper in half, or boiling water. Examples are: a change from a solid to a liquid, tearing a paper in half, or boiling water.

5. A Chemical Change is a change in the substance itself. You get a new substance with new properties. You can not get back what you started with. A Chemical Change is a change in the substance itself. You get a new substance with new properties. You can not get back what you started with. Examples are iron rusting, digesting food, baking a cake, or burning a match. Examples are iron rusting, digesting food, baking a cake, or burning a match.