Balancing Chemical Equations (Flashcardizz Assignment)

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during the reaction.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

How do you determine the number of atoms in a compound?

Back

Count the subscripts in the chemical formula. For example, in H2SO4, there are 2 H, 1 S, and 4 O, totaling 7 atoms.

Front

What does the coefficient in a chemical equation represent?

Back

The coefficient indicates the number of molecules or moles of a substance involved in the reaction.

Front

How do you balance a chemical equation?

Back

Adjust the coefficients of the reactants and products to ensure the same number of each type of atom on both sides.

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule. For example, in H2O, the '2' indicates there are 2 hydrogen atoms.

Front

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

Back

Mg + 2 HCl → MgCl2 + H2.

Front

What is the balanced equation for the decomposition of potassium nitrate?

Back

2 KNO3 → 2 KNO2 + O2.

Front

How can you tell if a chemical equation is balanced?

Back

By counting the number of atoms of each element on both sides of the equation and ensuring they are equal.

Front

What is the balanced equation for the reaction of hydrogen and oxygen to form water?

Back

2 H2 + O2 → 2 H2O.