1. Chemical/Physical Property Notes

2. Chemical Properties Chemical properties of matter are observed during a reaction in which the substance is changed into a new substance. Chemical properties include: General reactivity, flammability and combustibility.

3. Physical Properties Physical properties of matter are observed without changing the substance. Common physical properties ColorLuster HardnessDensity MalleabilityPhase changes ConductivityPoints of phase changes

4. Both physical and chemical properties can be used to identify unknown substances. This is possible because a substance always has the same properties. Example: Iron will always have the same hardness, the same density and boiling point. If we know that iron has a density of 5.3 g/mL and we have an unknown piece of metal A that has a density 4.7g/mL and a second piece of unknown metal B with a density of 5.3g/mL, which unknown would be iron?

5. Physical and chemical properties do not depend on the size of the substance. They will be the same for a given substance no matter its size.