plumbing science Flashcards
(46 cards)
what is kelvin equal to
273
what’s a pure metal
a metal that consists of 1 atom
what’s a alloy
a alloy is a blend of 2 or more elements, one of which must be a metal
what’s a ferrous metal
a ferrous metal is what contains iron, suck as steel and cast iron
what are non ferrous metals
non ferrous metals don’t contain iron and do not rust
what is density equal too
mass divide volume
atmospheric pressure at sea level is
101.3Pa
what does pressure =
force
what is the ph number for pure water
7
name a malleable material
lead
what does ductile mean
how much something can be stretched or pulled
what the letters DZ stamped on modern brass fittings
de-zinced
what’s the best conductor of heat
copper
what is a drawback of soft water
can lead to health problems
what is meant by calorific value
the energy continued in a fuel or food
which gas has the highest calorific value
butane
how does conduction occur
heat travelling through or along a solid material
what’s the si unit of heat
kelvin
what is bar used for
it’s the unit we measure water with
what’s the freezing point of water at sea level
0°C
what water comes out of the tap
wholesome
what is tensile strength
the max a material can withstand being pulled apart
what is the hardness of a material
the resistance of material to be cut
what’s the toughness of a material
the amount of energy a material can absorb without breaking
