GCSE CHEM METALS & ORES Flashcards
Define an element
an element contains 1 TYPE of atom only
Define an atom
an atom is the smallest component of an element having the chemical properties of the element.
A compound is…
2 or more DIFFERENT elements chemically bonded together
What is a Molecule is
2 or more elements chemically bonded together
what is the chemical formula of limestone or calcium carbonate?
CaCO3
What is the chemical formula of glucose?
C6 H12 O6
put these elements in order of reactivity most reactive 1st
Pb Cu K Al Mg Au Fe
K Mg Al Fe Pb Cu Au
What is a patina
the film of copper oxide formed on the surface of bronze or copper
what is an alloy
an alloy is a metal and at least one other element chemically bonded together
what is bronze an alloy of
copper and tin
What is reduction or smelting
Smelting is where you heat the metal oxide with carbon to remove the oxygen
what is a high grade ore
a high grade ore is an ore such as gold that is easy to extract yet still expensive
what is a low grade ore
a low grade ore is an ore wher
what is an ore
an ore is a metal containing rock that is commercially viable to extract for the metal content.
native state
a metal found in native state is found in pure form such as gold or platinum.
