Chemistry - Chemistry "The study of the properties of...

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Chemistry "The study of the properties of materials and the changes that materials undergo" Introduction to Matter Matter "Matter is the physical material of the universe; it is anything that occupies space and has mass" Matter can exist in three physical states: 1. gas or vapor 2. liquid 3. solid Gas No fixed volume or shape - it conforms to the volume and shape of its container. Gases can be compressed or expanded to occupy different volumes. Liquid A liquid has a distinct volume, independent of its container, but it has no specific shape . It assumes the shape of the container it is in. Liquids cannot be appreciably compressed. Solid A solid has a definite shape and volume; it is rigid. Solids cannot be appreciably compressed. Substances A pure substance has a fixed composition and distinct properties. Most matter we come in contact with in our daily lives is not a pure substance, but a mixture of substances. Physical and Chemical Properties Every pure substance has a unique set of properties - characteristics which allow us to distinguish it from other substances. These properties fall into two general categories:
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Chemistry - Chemistry "The study of the properties of...

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