Which statement best describes the  Law of Conservation of Mass?

In the Law of Conservation of Mass: Mg to MgO lab, the reactants were?

A. Mg

B. O₂

C. MgO

D. heat

In the Law of Conservation of Mass: Baking soda and Vinegar lab, the product that was aqueous was?

A. C₂H₄O₂

B. NaHCO₃

C. NaC₂H₃O₂

D. H₂O

What type of reaction was observed in the Law of Conservation of Mass: Mg to MgO lab?

What were the indicators of a chemical reaction observed in the Law of Conservation of Mass: Mg to MgO lab?

In the Law of Conservation of Mass: Baking soda and Vinegar lab, the gas that was produced was??

In the Law of Conservation of Mass: Baking soda and Vinegar lab, the mass of the reactants was approximately?

In the Law of Conservation of Mass: Baking soda and Vinegar lab, what would be a reasonable explanation for why the mass of the products was less than the mass of the reactants?

In the Law of Conservation of Mass: Mg to MgO lab, what would be a reasonable explanation for why the mass of the reactants was more than the mass of the products?

What coefficient correctly balance this equation?

___ Mg_(s) + ___ O_2(g) →  ___ MgO_(s)   +   heat

What coefficient correctly balance this equation for the combustion of methane in a Bunsen burner?

___ CH_4(s) + ___ O_2(g) →  ___ H₂O_(g)  +   ___ CO_2(g)   +   heat

A reaction starts with 24 grams of Mg  and when the reaction is over 56 grams of MgO is produced.  How many grams of oxygen were used?

___ Mg_(s) + ___ O_2(g) →  ___ MgO_(s)   +   heat

In the Law of Conservation of Mass: Baking soda and Vinegar lab, the mass of the flask was approximately?

In the Law of Conservation of Mass: Mg to MgO lab, what was the approximate mass of Mg ribbon used?