chap 4 key terms Flashcards
(32 cards)
alkali metal
o Alkali metal- A group 1 metal.
alloy
o Alloy- A substance formed when other materials are mixed with a metal.
cation
o Cation- A positively charged ion.
circular economy
o Circular economy- an economy based on a model of production and consumption that aims to design out waste and pollution, keep products and materials in use, and regenerate natural systems.
coke
o Coke- a solid that contains 80-90% carbon, it is produced by strongly heating coal in the absence of air.
conductor
o Conductor- An object or type of material that permits the flow of electrical charges.
crystal
o Crystal- A solid made up of atoms or molecules arranged in a repeating 3D pattern.
delocalise
spread out
delocalised electron
o Delocalised electron- an electron that isn’t restricted to the region between 2 atoms.
density
o Density- a measure of the amount of ass per unit volume.
ductile
o Ductile- Able to be drawn into a wire.
e-waste
o e-waste- electronic waste.
effective nuclear charge
o effective nuclear charge- the net positive charge experienced by an electron in an outer shell of an atom. It indicates the attractive force felt by the valence electrons towards the nucleus.
electrolysis
o electrolysis- The production of a reaction by the passage of electrical energy from power supply through a conducting liquid.
ferrous
o ferrous- A material containing iron.
in-situ leaching
o in-situ leaching- also known as solution mining. The process involves leaving the ore where it is in the ground, and recovering the minerals from it by dissolving them and pumping the solution to the surface where the minerals can be recovered.
inert
not chemically reactive
ionisation energy
o ionisation energy- the energy required to remove one electron from an atom of an element in the gas phase.
lattice
o lattice- a regular arrangement of large numbers of atoms, ions or molecules.
linear economy
o linear economy- an economy in which raw materials are used to make a product, and after its use the product is thrown away.
lustrous
o lustrous- having the quality of reflecting light in a glossy and shiny way.
malleable
o malleable- able to be bent or beaten into sheets.
metallic bonding
o metallic bonding- the electrostatic attractive forces between delocalised valence electrons and positively charged metal ions.
metallic bonding model
o metallic bonding model- a model that explains the properties and behaviour of metals in terms of the particles in metals.
