1. Conservation of Mass in Open and Closed Systems
DIGI: AC11
Conservation of Mass in Open and Closed Systems

2. AC11: law of conservation of mass in open and closed systems
Zn + HCl  ZnCl + H2(gas)
With the current setup, would this be considered an open or closed system?
What will happen to the mass of the system (increase, decrease, or stay the same), and why?

3. AC11: law of conservation of mass in open and closed systems
Zn + HCl  ZnCl + H2(gas)
3. If this reaction occurred in a flask with A BALLOON on top, would that be an OPEN or a CLOSED system? 4. What would happen to the mass (increase, decrease, or stay the same), and why? 5. Extension: Balance the chemical reaction above.