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Properties of Matter

Properties of Matter. Physical Properties. Viscosity Conductivity Malleability Hardness Melting point Boiling point Density Ductility Magnetism. Viscosity: the tendency of a liquid to keep flowing – its resistance to flowing . Greater = slower the liquid moves

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Properties of Matter

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  1. Properties of Matter

  2. Physical Properties • Viscosity • Conductivity • Malleability • Hardness • Melting point • Boiling point • Density • Ductility • Magnetism

  3. Viscosity: the tendency of a liquid to keep flowing – its resistance to flowing . • Greater = slower the liquid moves • Viscosity usually decreases when heated

  4. Conductivity • Ability to allow heat to flow. • Those materials that have a high conductivity like metals are called good conductors. • Usually means conductors of heat and electricity.

  5. Malleability • Ability of a solid to be hammered without shattering. • Most metals are malleable.

  6. Hardness • One way to compare is to see which material scratches the other. • Diamond is the hardest mineral and Talc is softest.

  7. Melting and Boiling Point • The temperature at which a substance changes from solid to liquid is its melting point. Water = 0° C • The temperature at which a substance boils is its boiling point. • Water = 100 ° C

  8. Density

  9. Physical Properties • Some of the properties of the material change, but the substances in the material remain the same. • Water from liquid to a gas during boiling • Crumpling and slicing change size and shape. • Some can be reversed (freezing and melting)

  10. Chemical Properties • Any ability to produce a change in composition of matter. • Can be observed only when the substances in a sample of matter are changing into different substances.

  11. Flammability • Materials ability to burn in the presence of oxygen. • Sometimes not desirable property. Children's sleepwear. (flame-resistant) • Materials that can burn are used for fuel.

  12. Reactivity • How readily a substance combines chemically with other substances. • Oxygen is reactive easily with most other elements. Rust • Nitrogen is not reactive and used on ships as a gas to decrease rusting.

  13. Buoyant Force • The upward force on an object immersed in a fluid. • If the buoyant force is equal to the object then it floats. • If the buoyant force is less than the object then it sinks.

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