1) Properties of Matter

• Properties of matter are classified as physical or chemical.
• Physical properties can be measured without changing the identity and composition of the substance.
• Chemical properties describe the way a substance may change or react to form other substances.
• Intensive properties do not depend on the amount of the sample and can be used to identify substances.
• Extensive properties depend on the amount of the sample present.
• Changes in matter can also be classified as physical or chemical.
• A physical change occurs when a substance changes its physical appearance but not its composition.
• A chemical change or chemical reaction occurs when a substance is transformed into a chemically different substance.
• All changes of state are physical changes.
• Three ways to separate mixtures are filtration, distillation, and chromatography.
• These three ways depend on the differences of properties of matter to work.
• Chromatography depends on the differing abilities of substances to adhere to surfaces of various solids.