Question

how do the products of chemical reactions compare to their reactants? the products usually weigh more than the reactants. the products often have completely different properties than the reactants. the products usually have more atoms than the reactants. the products are usually more toxic than the reactants. what is the problem with the chemical equation shown? h₂ + o₂ → h₂o theres a missing hydrogen in the reactants. theres a missing oxygen in the product. theres an additional oxygen in the product. theres an additional hydrogen in the reactants. what is the correct way to balance a chemical equation? total net error using the periodic table complex algebra guesswork

Explanation:

1. In a chemical reaction, products have different chemical and physical properties from reactants due to rearrangement of atoms. Mass is conserved (products don't usually weigh more), atom number is conserved in a balanced reaction, and stability varies case - by - case.
2. For the chemical equation $H_2 + O_2

ightarrow H_2O$, on the reactant side, there are 2 oxygen atoms in $O_2$, but on the product side, there is only 1 oxygen atom in $H_2O$, so there is missing oxygen in the product.

1. Balancing is key in chemical equations to follow the law of conservation of mass.

Answer:

1. The products often have completely different properties than the reactants.
2. There is missing oxygen in the product.
3. Balancing.