Question

practice it!
select which statements correctly compare melting and boiling points with solubility.
both solubility and melting/boiling points are seen in nature.
both solubility and melting/boiling points only pertain to substances when connected to water.
both solubility and melting/boiling points are affected by temperature.
both solubility and melting/boiling points are physical properties of matter.
both solubility and melting/boiling points are chemical properties of matter.

Explanation:

• Both solubility and melting/boiling points are seen in nature: Solubility (e.g., salt dissolving in water) and melting/boiling points (e.g., ice melting, water boiling) occur naturally.
• Both solubility and melting/boiling points are affected by temperature: Generally, solubility of solids in liquids increases with temperature (except for some like \(CaSO_4\)), and melting/boiling points are temperature - dependent (e.g., ice melts at \(0^{\circ}C\), water boils at \(100^{\circ}C\) at standard pressure).
• Both solubility and melting/boiling points are physical properties of matter: Physical properties can be observed without changing the substance's chemical identity. Solubility (e.g., sugar dissolving in water - still sugar and water chemically) and melting/boiling (e.g., ice to water - same \(H_2O\) chemically) are physical changes.

• Incorrect statements:
• Both solubility and melting/boiling points only pertain to substances when connected to water: Melting/boiling points are properties of pure substances (e.g., melting point of iron is \(1538^{\circ}C\) regardless of water). Solubility can be in other solvents (e.g., salt in alcohol).
• Both solubility and melting/boiling points are chemical properties of matter: Chemical properties involve chemical change (e.g., reactivity of sodium with water). Solubility and melting/boiling are physical.

Answer:

Both solubility and melting/boiling points are seen in nature, Both solubility and melting/boiling points are affected by temperature, Both solubility and melting/boiling points are physical properties of matter.