definitions
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define lattice
millions of atoms in a regular structure regular arrangement of alternating positive and negative ions.
define an Atom
The smallest particle that cannot be further broken down.
define a compound
2 or more diff. types of atoms chemically bonded together
define a molecule
particles made of 2 or more atoms covalently bonded together (can be same or diff. type of atoms)
define an element
same type of atoms
define an ion
a charged particle
define aqueous
dissolved in solution
define molten
melted
(off topic) define Resolution
the smallest reading on a piece of equipment. eg, stop watch counts 2.05s,, the resolution (smallest reading is 0.05)
define volatile
turns to a gas easily (low boiling point)
define diffusion
moment of particles from a region of high concentration to a region of low concentration as a result of their random motions
define pressure
force acting perpendicular to a surface per unit area
define net force
define net force
define a mixture
2 or more elements / compounds mixed together that can be separated by physical means
Define an isotope
Atoms of the same element with the same number of protons and electrons but a different number of neutrons
define an ionic bond
transfer of electrons between positive metal ions and negative non metal ions
define metallic bond
positive metal ions in a ‘sea’ of delocalised electrons
define malleable
can be bent or hammered into shape
define ductile
can be drawn into wires
define a covalent bond
shared pair of electrons between non metals
define molecular formula
number of each type of atoms present (chemical formula)
define empirical formula
simplest whole number ratio of atoms present
define relative atomic mass
the average mass of isotopes of an element compared to 1/12 of the mass of an atom of carbon 12
define atomic mass
proton + neutron