Page 157 - Chemistry_Form_2

Chemistry
for Secondary Schools

pH the negative logarithm of hydrogen ion concentration

Redox reaction a reaction in which both oxidation and reduction occur
simultaneously

Reduction addition of hydrogen or removal of oxygen from a substance
FOR ONLINE READING ONLY
or gain of electrons by a substance
Relative atomic mass the atomic masses of all the atoms of a particular element
compared to the atomic mass of carbon-12 isotope
Relative molecular mass is the average mass of a molecule relative to the mass of a
carbon-12 atom
Respiration a process in living organisms involving the production of
energy, typically with the intake of oxygen and the release
of carbon dioxide from the oxidation of complex organic
substances

Reversible reaction a reaction that proceeds in both the forward and backward
directions
Sacrificial anode a highly reactive metal used to protect another metal from
corrosion by preventing metal deterioration by making the
protected metal act as a cathode in an electrochemical cell

Salt an ionic compound which is made up of cation(s) and
anion(s)
Saturated solution a solution that holds the maximum dissolved solute at a
given temperature and pressure.
Thermal a breakdown reaction that occurs when a compound is
decomposition exposed to heat
Thermite a mixture of finely powdered aluminium and iron oxide
that produces a very high temperature on combustion, used
in welding and for incendiary bombs
Titrant a standard solution usually added to the burette during
titration
Titration the process of determining the quantity of analyte by adding
measured volumes of a titrant

150 Student’s Book Form Two

01/08/2025 11:21:14
CHEMISTRY FORM TWO NEW 2025 DUMMY.indd 150
CHEMISTRY FORM TWO NEW 2025 DUMMY.indd 150 01/08/2025 11:21:14