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Physical Properties of Matter

Physical Properties of Matter. What Is Matter?. Classifying Matter. Matter. Mixtures. Substances. Homogeneous. Elements. same throughout. cannot be separated into different kinds of matter. Heterogeneous. Compounds. samples are not made of exactly the same portions of matter.

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Physical Properties of Matter

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  1. PhysicalProperties of Matter

  2. What Is Matter?

  3. Classifying Matter Matter Mixtures Substances Homogeneous Elements same throughout cannot be separated into different kinds of matter Heterogeneous Compounds samples are not made of exactly the same portions of matter two or more elements that cannot be separated by physical means

  4. Changes In Matter (Example: Digestion) Physical Change Chemical Change Chewing breaks up the apple into smaller pieces. Chemicals break down the apple into simple sugars.

  5. Physical Changes In Matter …are changes in the physical properties of matter. Examples include phase changes from solid, liquid and gas.

  6. Properties of Matter3 States of Matter At a Constant Temperature: • Stays the same shape and size • Molecules stay in the sameposition Solid 1 • Stays the same size • No definite shape • Molecules slideover each other • No definite shape or size • Molecules bounce off each other Liquid Fluids 2 Gas • Most common state in universe • High temp. causes atoms to fall apart Our sun and stars made of plasma. 3 Plasma

  7. Water Phase Change Graph

  8. Density of Solids m = D Mass (g) V cm3 Density (g/cm3) height x width x depth

  9. Physical Propertiesof Solids • Hardness – resistance to scratching • Elasticity – ability to stretch and return to their original size • Brittleness – tendency to shatter • Malleable – ability to be pounded into thin sheets • Tensile Strength – measure of how much pulling, or tension a material can withstand before breaking

  10. Buoyancy Pressure Properties of Fluids Viscosity Archimedes’ Principle Charles’ Law Boyle’s Law

  11. What Is Buoyancy? A 3rd Century BC mathematician Archimedes, discovered... Force exerted on an object in a liquid… is EQUAL to… Weight (force) of fluid displaced by that object. Buoyancy is the measure of the upward pressure a fluid exerts on an object.

  12. Buoyancy of Gases Warmer Air Less DenseInside Charles’ Law: The volume of a gas  (increases) as the temperature . The volume of a gas  (decreases) as the temperature. Cooler Air More Dense Outside On which day would it be easier to fly an air balloon? A cooler day or a warmer day?

  13. The Viscosity of Fluids... is a measure of a material’s resistance to resist flow. Water Ketchup Which the above fluids resists flow more?

  14. Viscosity

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