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IB Chem 1 SL
Question | Answer |
---|---|
NH4,+ | Ammonium |
CO3,2- | Carbonate |
OH- | Hydroxide |
NO3,- | Nitrate |
SO4,2- | Sulphate |
PO4,3- | Phosphate |
Formula to convert between particles (N) and moles (n) | N = n x 6.02 x 10E23 |
Formula to convert between mass (m) and moles (n) | n = mM |
Formula unit | Term for ionic compounds (smallest whole number ratio of the compound) |
Empirical formula | Formula of a compound showing the simplest whole number ratio of atoms of different elements in the compound |
Molecular formula | Formula of a compound showing the actual number of atoms of different elements covalently bonded in a molecule |
Ideal gas law equation | PV=nRT |
Ionic compound | formed from the attraction of positive ions (cations) and negative ions (anions). Metal and a non-metal. |
Covalent compound. | formed by sharing electrons. 2 non-metals. |
Element | A substance composed of atoms having an identical number of protons in each nucleus. |
Atom | Smallest part of an element as regarded in Chemistry (not Physics). |
Compound | 2 or more elements chemically bonded together |
Mixture | Contain more than one element an/or compound that are not chemically bonded together and so retain their individual properties. |
Homogenous | have uniform properties |
Heterogenous | have non-uniform properties |