Question

question 1 - 6
a student places a liquid in a jar and seals it. the liquid is then heated which turns it into a gas. what happens to the mass of the jar and everything inside it after it was heated?
the mass increased.
it depends on whether a chemical reaction occurred.
the mass stayed the same.
the mass decreased.

Explanation:

According to the law of conservation of mass, mass is neither created nor destroyed in a closed system. Here, the jar is sealed (a closed system). Heating the liquid to turn it into a gas is a physical change (no chemical reaction in terms of mass - altering chemical bonds). So the mass of the jar and its contents remains the same.

Answer:

The mass stayed the same.