Review: LOCOM in Reactions

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that in a closed system, the mass of the reactants must equal the mass of the products in a chemical reaction.

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms of each element is the same on both sides of the equation.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula in an equation to indicate how many molecules or moles of that substance are involved in the reaction.

Front

Why is it important to balance chemical equations?

Back

It is important to balance chemical equations to ensure that the same number of each type of atom is present on both sides, reflecting the conservation of mass.

Front

What does it indicate if a chemical reaction produces different products?

Back

The production of different products indicates that a chemical change has occurred, but it does not directly relate to the conservation of mass.

Front

In the reaction @@2KClO_3 ightarrow 2KCl + 3O_2@@, what can be said about the mass of reactants and products?

Back

Front

What role do coefficients play in the reaction @@N_2 + 3H_2 ightarrow 2NH_3@@?

Back

Coefficients indicate the number of molecules involved in the reaction, showing the ratio of reactants to products.

Front

How do you balance the equation @@N_2 + H_2 ightarrow NH_3@@?

Back

Front

What happens to the atoms during a chemical reaction?

Back

Atoms are rearranged during a chemical reaction; they are neither created nor destroyed, which aligns with the conservation of mass.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction, appearing on the left side of the equation.