abrasive
Property of a material or an object with a rough surface compared to a smoother surface.
brittle
"Property of a material which is fragile
brittleness
"Tendency of a material to fracture or fail upon the application of a relatively small amount of force
catalyst
A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
alloy
"Blended mixture of materials of which at least one is a metal (e.g. steel alloy
aluminium
Lightweight metal made from bauxite. Excellent electrical conductor and has good alloying properties.
cast iron
Iron-carbon alloy with a carbon content > 2%. Grey cast iron has less tensile strength and shock resistance than steel but good compressive strength.
copper
Heavy metal with excellent electrical conductivity and alloying properties. Reddish when unoxidized.
ferrous metals
"Metals that contain iron (Fe)
heavy metals
"Dense metals like Cadmium (Cd)
lead
Heavy metal (Pb) that does not oxidize.
lightweight metals
"Metals with low density
mercury
"Heavy metal (Hg)
metalloids
"Elements with some metallic properties
non-metals
"Chemical elements lacking metallic attributes
pig iron
Intermediate product of smelting iron ore.
precious metals
"Rare metals with valuable properties
steel
Ferrous metal with excellent alloying properties.
tin
"Metal (Sn) useful as an alloying element
tungsten
"Very hard
carbon
"Element used in materials like carbon fibers
diamond
"Strong
graphene
Carbon allotrope made of a single layer of graphite atoms.
graphite
"Thermodynamically stable carbon allotrope
natural rubber
"Hydrocarbon elastomer
resin
"Hydrocarbon secretion of plants
combustible
Capable of igniting and burning.
compressive
"Describes force per unit area
ductility
Ability of a material to deform without breaking.
durability
Ability to undergo deformation without cracking.
explosive
Capable of exploding or tending to explode.
inert (chemically)
Does not react chemically under various conditions.
inflammable
Easily catches fire.
intumescent
"Swelling when exposed to heat
opaque
"Light may pass
resiliency
Ability to return to original shape after deformation.
roughness
Describes the irregularity of a material’s surface.
smoothness
Describes the regularity of a material’s surface.
toughness
Describes a material's ability to resist destruction under pressure.
transparent
Light and images pass through
viscosity
Internal friction in a fluid
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