Balancing Chemical Equations (Q2W6)

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products involved.

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances in a chemical reaction, found on the left side of the equation.

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction, found on the right side of the equation.

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 the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it is conserved.

Front

How do you determine the coefficients in a balanced equation?

Back

Coefficients are determined by adjusting the numbers in front of the compounds to ensure equal numbers of each type of atom on both sides.

Front

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

Back

2H₂ + O₂ → 2H₂O.

Front

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

Back

Zn + 2HCl → ZnCl₂ + H₂.

Front

What is the balanced equation for the combustion of propane (C₃H₈)?

Back

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.

Front

What is a skeleton equation?

Back

A skeleton equation is a chemical equation that shows the reactants and products but not their coefficients.