Given your responses to Questions 1–3, what is the phrase “conservation of mass” most likely to mean?

Question

A
Mass is kept the same

B
Mass changes shape but not size

C
Mass is protected from danger

D
Mass is unpredictable

Answer 1

The phrase "conservation of mass" most likely means:

A. Mass is kept the same

This concept refers to the principle that in a closed system, the total mass remains constant over time, regardless of the processes acting inside the system.