chapter 2 Flashcards
what are the common physical properties
electrical conductivity, thermal conductivity, melting point, boiling point, strength, hardness, flexibilty, density
what is electrical conductivity
how easily electrical current flows through that material
examples of electrical conductors
metal
examples of electrical insulators
rubber
what is thermal conductivity
how readily heat passes through a material
what is melting point
the temp at which a material changes from solid to liquid
what is boiling point
the temp at which a material changes from liquid to gas
what is flexibility
the ability to bend easily without breaking and return back to its original shape
what is strength
the ability to support a heavy load without changing its mass
what is hardness
the ability to resist wear and tear and cut/scratch another material that is less hard than itself
what is density
amount of mass per unit volume
what is mass
amount of matter an object has (kg)
what is weight
amount of gravitational force acting on an object (N)
what is the precision of a vernier calliper and normal ruler
0.01 cm and 0.1 cm respectively
how to measure volume of an irregular object
using displacement mthd which is use displacement can fill w water lower object gently with string to avoid splash. volume of water displaced is volume of irreg obj
