Science MCQs

Increasing temperature often increases solubility so previously undissolved solute may dissolve.

Solubility is defined as the maximum grams of solute that saturate 100g of solvent.

Sodium nitrate (NaNO₃) is much more soluble in water than silver chloride (AgCl).

Like dissolves like; naphthalene and benzene are both covalent non-polar substances.

These solvents evaporate easily which helps the paint to dry quickly.

Controlling solubility ensures drugs are at the correct concentration for effectiveness and safety.

Stirring helps by bringing fresh solvent into contact with the solute surface speeding up dissolution.

Crushing increases the surface area of the solute exposed to the solvent speeding up dissolving.

Heating water gives its particles more kinetic energy allowing them to interact with and break apart sugar faster.

Carbon dioxide (CO2) is dissolved under pressure to make fizzy carbonated drinks.