Question

What does the law of conservation of matter (or the law of conservation of mass) tell the students
Matter might be lost in a chemical or physical process
Matter might be gained in a chemical or physical process
Matter is always gained or lost in a chemical or physical process
Matter is never gained or lost in a chemical or physical process

Answer 1

The law of conservation of matter (or the law of conservation of mass) tells the students that matter is never gained or lost in a chemical or physical process.