Science, Unit 5 Flashcards
List 6 properties of Metals
shiny
malleable
ductile
sonorous
conduct heat
magnetic
Why is copper so useful and what is an example it can be used for?
electrical wire
it conducts electricity and is ductile
what is ductile
means it can be drawn out into wires
what does malleable mean
means they can be hammered into shape
which part of a cooking pan should metal be used for
the cooking / heating part of the pan
which part of a cooking pan should non-metal be used for and why
the handle so it won’t burn your hand
name properties of non-metal
brittle, shatter / break easily, do not conduct heat / electricity
what is the word used to describe materials that do not conduct electricity?
insulator
why is helium used in balloons?
Hydrogen is lighter than air but it is flammable and as oxygen is present in the air, so the risk of explosion and fire is there. Helium is lighter than air and it is a non-combustible (flammable) gas so it used to fill balloons.
what is an alloy?
a mixture containing 2 different types of metal atoms (in other words, alloys are metal mixtures)
which properties of aluminium make it useful for building aeroplanes?
resistant to corrosion, lightweight, malleable
why would you mix different metals (ie. alloy) to build certain things instead of using pure metals?
to make the metal stronger
for example: coins (silver+copper+nickel), jewellery (gold+copper+silver+zinc)
what does corrosive mean?
can destroy living tissue and cause burns
what safety gear should you use to protect yourself from dangerous acids
glove, safety glass
draw 8 hazard warning labels
explosive
flammable
oxidising
corrosive
toxic
hazardous to environment
health hazard
serious health hazard
