Mass
What is Mass?
Mass is a fundamental property of matter that measures the amount of substance in an object and its resistance to acceleration (inertia). In chemistry, mass is most commonly expressed in grams or kilograms and is central to stoichiometric calculations via the mole concept (one mole of any substance contains Avogadro's number of particles). Mass is conserved in all ordinary chemical reactions (law of conservation of mass), though it can be interconverted with energy in nuclear reactions.
Key Facts
Frequently Asked Questions
Mass is a fundamental property of matter that measures the amount of substance in an object and its resistance to acceleration (inertia). In chemistry, mass is most commonly expressed in grams or kilograms and is central to stoichiometric calculations via the mole concept (one mole of any substance contains Avogadro's number of particles). Mass is conserved in all ordinary chemical reactions (law of conservation of mass), though it can be interconverted with energy in nuclear reactions.