symbols formula and equations Flashcards
what are the diatomic elements
have - hydrogen
no - nitrogen
fear - fluorine
of - oxygen
ice - iodine
cold - chlorine
beer - bromine
what does aqueous symbol and what does it mean
(aq) dissolves in water
what does metals and acids make
salt + hydrogen
to remember use MASH
what does magnesium + hydrochloric acid make
whats the symbol equation
magnesium chloride + hydrogen
mg + 2HCL = MgCl2 + h2
what does a acid and alkali make
salt + water
what does magnesium hydroxide and sulfuric acid make
whats the symbol equation
magnesium sulfate + water
mg(OH)2 + h2SO4 = 2h2O
what does hydrochloric acid + calcium carbonate make
calcium chloride + carbon dioxide + water
CaCO2 + 2hcl = caCl2 + H20 + CO2
whats the ionic equation for lithium
li = li+ + e-
whats the charge of group 0 ion
group 3
group 4
group 6
unreactive
2+
dont generally form ions
with the formulae of compounds what should the overall charge be
zero
whats the formula of potassium dichromate
K₂Cr₂O₇
Write balanced symbol equations for the reactions shown by the word equations below
1. sodium + chlorine → sodium chloride
2. calcium carbonate → calcium oxide + carbon dioxide
3. calcium + water → calcium hydroxide + hydrogen
4. aluminium + oxygen → aluminium oxide
5. lead(II) nitrate + potassium iodide → lead(II) iodide + potassium nitrate
1 2Na + Cl₂ → 2NaCl
2 CaCO₃ → CaO + CO₂
3 Ca + H₂O → Ca(OH)₂ + H₂
4 4Al + 3O₂ → 2Al₂O₃
5 Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃
Write balanced symbol equations for the following reactions.
(a) copper(II) carbonate and sulfuric acid
(b) sodium hydroxide and hydrochloric acid
(c) zinc and nitric acid
(a) CuCO3 + H2SO4 → CuSO4 + CO2 + H2O
(b) NaOH + HCl → NaCl + H2O
(c) Zn + 2HNO3 → Zn(NO3)2 + H2
