1. PHYSICAL PROPERTIES OF MATTER

2. Physical Properties Are characteristics of a substance that can be observed and measured without changing the identity of the substance Physical Properties QualitativevsQuantitative

3. Qualitative Physical Properties  Qualitative properties of a substance can be observed through the senses: sight, sound taste, smell, touch  What are some examples?

4. Examples of Qualitative Properties  State  Clarity  Colour  Odour  Homogeneity  Taste  Texture  Lustre  Ductility  Malleability  Brittleness

5. PropertyExamples colourcolourless, black, red odourhow the substance smells (sweet, pungent, mouldy) statesolid, liquid or gas texturethe feel of a substance (rough, smooth, bumpy) lustrehigh lustre = shiny, low lustre = dull malleabilitysoft, pliable, hard tastehow the substance tastes (sweet, sour, salty) brittlenessthe ability of a substance to break apart of bend hardnessthe ability of a substance to be scratched ductilitythe ability of a substance to be stretched into a wire formThe shape of a substance (crystalline, amorphous) claritythe ability of the substance to transmit light (opaque, translucent or transparent/clear)

6. Sodium Metal

7. Copper Metal

8. Quantitative Physical Properties  Can be measured and assigned a particular value  They are often unique to a particular element or compound  Recorded values are available for reference (can look it up)

9. Examples of Quantitative Properties Have a numerical value  Melting point  Boiling point  Density  conductivity  Solubility  Viscosity  Hardness

10. PropertyExamples melting point the temperature a substance changes from solid to liquid – measured in degrees C or F boiling point the temperature a substance changes from a liquid to a gas – measured in degrees C or F freezing point the temperature a substance changes from a liquid to a solid – measured in degrees C or F density Ratio of the mass of matter to it’s volume - Measured in g/cm 3 or g/mL or g/L etc hardness the ability of a substance to be scratched - measured using hardness scales solubility the ability of a substance to dissolve another substance – commonly measured in grams of solute per 100 grams of solvent viscositythe resistance to flow conductivitythe ability to conduct electricity or heat massthe quantity of matter in a sample – g, kg etc height the measurement of length from one end to the other – measured in cm, m, km, inches, ft volume the amount of space occupied by a substance – measured in cm 3, mL or L weightThe force of gravity on a substance – measured in newtons

13. Physical Changes of Matter A Physical Change is a change in which the composition of the substance remains unaltered and no new substances are produced. Examples of Physical Changes:  Change of size or shape  Change of state  Dissolving

14. Physical Changes:  are easily reversible  form no new products  often just a change of state

15. It’s Experiment Time!!