Physical properties Learning Goals Identify differences between Quantitative

Physical properties

Learning Goals �Identify differences between Quantitative and Qualitative properties �Identify various physical properties of matter

Quick Questions! �See the picture List 3 physical characteristics List 3 questions that you want to ask to know more about its physical characteristics

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Physical Properties �Characteristics that describe matter based on your 5 senses: Sight Smell Sound Touch Taste

Two Different Physical Properties �Qualitative Properties �Quantitative Properties “Quality over Quantity …. ”

Qualitative Properties �Qualities that cannot be measured by numbers

Colour �The colour of the matter �Example: Salt has white colour Silver has…. silver colour

Odour �The smell of the matter �Example: Carbon monoxide has no smell (odourless) ▪ That’s why it can be so dangerous during winter!

State �The state of the matter Solid Liquid Gas

Change in the state of the matter Gas Liquid Solid

Lustre �Shininess of the matter

Quantitative Properties �Qualities that can be measured by numbers

Viscosity �Measurement of how easily a liquid can flow High viscosity = flows very slowly ▪ Example: Honey Low viscosity – flows very quickly ▪ Example: Water

Boiling point/Melting point �Boiling point: the temperature at which a liquid turns into a gas Example: Water has boiling point of 100 ºC �Melting point: the temperature at which a solid becomes a liquid Example: Water has melting point of 0 ºC

Density �

Conductivity �The ability to transfer electricity or heat Electrical conductivity ▪ Ability to transfer electricity Thermal conductivity ▪ Ability to transfer heat �High conductivity = can transfer electricity or heat really well �Low conductivity = cannot transfer electricity or heat well

Before You Go! �Give me two quantitative properties and two qualitative properties of water �Homework: �Read page 149 -158 �Do page 159 #2, 4, 6