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10 cards from this deck
Gases can escape or enter the container
CaOCaOCaO and CO2CO_2CO2
CO2CO_2CO2 gas escapes from open container
When a gas product escapes, making mass seem to decrease
Oxygen (O2O_2O2)
Iron oxide (rust)
Oxygen from air combines with it
When a gas reactant combines, making mass seem to increase
Gas can escape, causing apparent mass loss
Gas from air combines, causing apparent mass gain
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