Which of the following statements about mass is correct?

• A. Mass is a measure of the temperature of an object, commonly measured using a barometer, and its basic unit is degree Celsius (°C).
• B. Mass is a measure of the volume of an object, commonly measured using a thermometer, and its basic unit is liter (L).
• C. Mass is a measure of the amount of matter in an object, commonly measured using a balance, and its basic unit in the SI system is kilogram (kg).
• D. Mass is a measure of the length of an object, commonly measured using a ruler, and its basic unit is meter (m).

Answer: (C)

Verified step by step guidance

1. Understand the definition of mass: Mass is the measure of the amount of matter in an object, which is a fundamental property in chemistry and physics.
2. Recognize the correct instrument for measuring mass: Mass is commonly measured using a balance, which compares the object’s mass to known masses.
3. Identify the correct SI unit for mass: The standard unit of mass in the International System of Units (SI) is the kilogram (kg).
4. Distinguish mass from other physical properties: Temperature is measured with a thermometer and expressed in degrees Celsius (°C), volume is measured in liters (L), and length is measured in meters (m).
5. Conclude that the correct statement is the one that defines mass as the amount of matter, measured by a balance, with the unit kilogram (kg).