State Symbols (GCSE Chemistry)

In writing a reversible reaction where a gas dissolves to form aqueous ions, which state symbols combination is correct?

Which state symbol best describes ions free to move in solution (allowing conductivity)?

When writing the electrolysis of molten sodium chloride: Na+ + e– ? Na(l). Why is Na shown as (l) in the half-equation?

In the equation for a neutralisation producing a salt in solution (e.g., HCl + NaOH ? NaCl(aq) + H2O(l)), which state symbol tells you the salt is dissolved and can conduct electricity?

In the oven test for a precipitate, a chemist might write AgCl(s). What does AgCl(s) indicate?

Which state symbol shows a substance is dissolved in water?

Which state symbols would you expect for products of an exothermic reaction that forms a precipitate and releases a gas?

In combustion of methane CH4(g) + 2O2(g) ? CO2(g) + 2H2O(l), why is water often written as (l) rather than (g) in the product?

Which state symbol should be used when writing a salt after evaporating all solvent and collecting the dry crystalline solid?

When writing a reversible thermal decomposition where heating produces a gas, which state symbol is commonly used for the gas product?

In the equation Na2CO3(s) + 2HCl(aq) ? 2NaCl(aq) + CO2(g) + H2O(l), what does (g) show for CO2?