Balancing Reactions Practice

Front

What is the law of conservation of mass in chemical reactions?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure 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

What is the balanced equation for the reaction of hydrogen and nitrogen to form ammonia?

Back

3H2 + N2 → 2NH3.

Front

What is a double displacement reaction?

Back

A double displacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.

Front

What is the balanced equation for the reaction of aluminum and hydrochloric acid?

Back

2Al + 6HCl → 3H2 + 2AlCl3.

Front

How can you tell if a chemical equation is balanced?

Back

A chemical equation is balanced if the number of atoms of each element is the same on both sides of the equation.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is important because it reflects the conservation of mass and allows for accurate stoichiometric calculations.

Front

What is the product of the reaction between sodium phosphate and potassium hydroxide?

Back

The products are sodium hydroxide and potassium phosphate.

Front

What is the balanced equation for the reaction of sodium phosphate with potassium hydroxide?

Back

Na3PO4 + 3KOH → 3NaOH + K3PO4.