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CU1 Definitions

atomic number number of protons (or electrons) in an atom
mass number protons + neutrons in nucleus of atom
ionic bond electrostatic force between positively and negatively charged ions
covalent bond between two atoms that share one or more pairs of electrons
smelting heating a metal ore to extract its metal
phytomining process of extraction of metals from ores using plants
bioleaching process of extraction of metals from ores using microorganisms
transition metal found in central block of periodic table, has typical metallic properties
fractional distillation a way to separated liquids from a mixture of liquids by boiling them off at different temps then condensing and collecting
fractions hydrocarbons with similar boiling points from crude oil.
cracking used to break down large hydrocarbons into smaller, more useful ones. Hydrocarbon vapour is passed over hot catalyst or mixed with steam and heated to high temp.
double bond covalent bond made by the sharing of two pairs of electrons
polymer made up of repeating units of monomers
monomer small reactive molecules that react together to form a larger molecule (polymer)
polymerisation reactions of using monomers to make a polymer
hydrophilic water loving
hydrophobic water hating
Created by: blameruth