About metals
The most active metal
Francium
Oxidation states of iron
+2 and +3
Formula of bauxite
Al2O3
Number of electrons in Ca+2 ion
18
Common name of d and f metals
transition
When iron reacts with concentrated sulfuric acid what kind of salt would produce
Fe2(SO4)3
Location of Aluminum on the periodic table. Number of protons, electrons and neutrons.
3rd period and IIIA group. 13.13.14
Formula of marble
CaCO3
Two necessary compound for producind rust
oxygen and water
Two most common alloys of iron
steel and cast iron
What kind of precious stones contain aluminum
ruby and sapphire
Name of following compounds: Ca3(PO4)3 and CaSiO3
calcium phosphate and calcium silicate
Hard water contains
Mg(HCO3)2 and Ca(HCO3)2
Chemical formula of pyrite and why we call it as "Fool's gold"
FeS2. Because it look like a gold but very brittle and easier than real gold
Main way of producing pure aluminum
electrolysis
When calcium carbonate decomposes what kind of inorganic substances would produce
oxides of calcium and carbon
4 ways to producing metals from their ores
pyrometallurgy
metallothermic process
electrometallurgy
hydrometallurgy
Physical properties of pure iron
Pure iron is a silvery white colored, lustrous, soft metal with important magnetic properties.
The most important three alloys of aluminum
Duralumin, Magnalium and
Aluminum Bronze
Formula of gypsum
CaSO4·2H2O