Chemistry Key Words

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Alkane
Single and Saturated (**)
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Alkene
Double and Unsaturated
2 of 50
Atmosphere
mixture of gases above the lithosphere (nitrogen and oxygen mainly)
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Atomic number
the number of protons found in nucleus of an atom
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Background radiation
Ionising radiation that is present at all times at a low level
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Carbon-14
radioactive isotype of Carbon
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Catalytic converters
reduce Nitrogen Oxide and unburnt hydrocarbons in exhaust fumes
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Cathode
a negative electrode
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Compound
2 or more elements chemically joined eg. H2O
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Chromatography
method for splitting substances to check purity and see compounds
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Cracking
process of small hydrocarbons from large hydrocarbons
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Current
flow of electrons in an electric circuit
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Degassing
gas coming from volcanoes
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Delocalised electrons
electrons free to move away from a group of ions
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Dibromo compound
colourless compound from an alkene and bromine solution
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Distillation
process of evaporation the condensation
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Dry cleaning
cleaning without water
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Electrolyte
the liquid involved in electrolysis
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Electrons
negative particles within an atom
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Endothermic reaction
chemical reaction where heat is taken IN
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Equilibrium
forward and backwards reaction are happening at the same rate
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Essential Elements
NKP- plant growth
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Exothermic reaction
chemical reaction where heat is given OUT
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Galvanising
coating another metal with zinc
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Hydrated Iron (III) oxide
rust
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Halogens
reactive non-metals in group 7
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Ionises
adds/removes electrons leaving it charged
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Isotypes
same number of protons but not of neutrons
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Malleable
bendable
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Mass
the amount of an object in kg
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Matal halide
a compound of a halogen and a metal
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Molar mass
the relative formula mass in grams
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Nanotube
carbon atoms formed into a very tiny tube
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Neutrons
doesn't have a charge
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Oxidation
gains Oxygen and/or lose electrons
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Polymer
a number of short chained molecules joined to make a longer one
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Precipitate
solid formed in a solution during a chemical reaction
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Precipitate reaction
test for metal ions where a solid is formed
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Protons
positive particles
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Radical
a spare electron which is very reactive
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Redox
simultaneous process of reduction and oxidation
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Reduction
loses oxygen and/or gains electrons
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Relative Atomic Mass
the mass of an atom compared to a twelth of a carbon atom
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Resistance
measurement of difficulty for electric current to flow
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Sacrificial protection
using a more reactive metal to protect a less reactive metal
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Saponification
process of soap making using fat and sodium hydroxide
46 of 50
Smart alloy
alloy which will return to previous shape
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Subduction
where one plate sinks below another (oceanic plate sinks)
48 of 50
Titration
an accurate method for neutralisation
49 of 50
Transition element
part of the middle section of periodic table
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Other cards in this set

Card 2

Front

Double and Unsaturated

Back

Alkene

Card 3

Front

mixture of gases above the lithosphere (nitrogen and oxygen mainly)

Back

Preview of the back of card 3

Card 4

Front

the number of protons found in nucleus of an atom

Back

Preview of the back of card 4

Card 5

Front

Ionising radiation that is present at all times at a low level

Back

Preview of the back of card 5
View more cards

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