Class8 Science Book Curiosity Chapter 9 QA
Class 8 – Science | Chapter 9 VERY SHORT ANSWER (1 MARK) – IMPORTANT What is density? Density is the mass per unit volume of a substance. State the formula of density. Density = Mass ÷ Volume What is solubility? Solubility is the maximum amount of solute that dissolves in a fixed amount of solvent at a given temperature. What is a saturated solution? A solution that cannot dissolve more solute at a given temperature. What is an unsaturated solution? A solution that can dissolve more solute at a given temperature. Name the instrument used to measure mass. Physical balance. Name the instrument used to measure volume of liquids. Measuring cylinder. SHORT ANSWER (2 MARKS) – IMPORTANT Define solute and solvent. Solute is the substance that dissolves in a solvent. Solvent is the substance that dissolves the solute. What is concentration of a solution? Concentration is the amount of solute present in a given amount of solvent or solution. Differen...