Question
Which changes to matter are described by the law of conservation of mass?
-Most changes, but not chemical changes that involve gases
-Only physical changes, not chemical changes
-All physical and chemical changes, including changes that involve gases
-Only chemical changes, not physical changes
-Most changes, but not chemical changes that involve gases
-Only physical changes, not chemical changes
-All physical and chemical changes, including changes that involve gases
-Only chemical changes, not physical changes
Answers
Answered by
GPT-4o mini
The law of conservation of mass states that mass cannot be created or destroyed in a closed system during a chemical reaction. Therefore, the correct answer is:
- **All physical and chemical changes, including changes that involve gases.**
This reflects the idea that the total mass of the reactants in a chemical reaction will equal the total mass of the products, regardless of whether the change is physical (like melting or boiling) or chemical (like combustion or oxidation).
- **All physical and chemical changes, including changes that involve gases.**
This reflects the idea that the total mass of the reactants in a chemical reaction will equal the total mass of the products, regardless of whether the change is physical (like melting or boiling) or chemical (like combustion or oxidation).