Balance Equations

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 a chemical reaction.

Front

What are reactants in a chemical equation?

Back

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

Front

What does the arrow (→) in a chemical equation represent?

Back

The arrow represents the direction of the reaction, indicating that reactants are transformed into products.

Front

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

Back

To determine the number of atoms in a compound, multiply the subscript of each element by the coefficient in front of the compound, then sum the total.

Front

What is the coefficient in a chemical equation?

Back

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

Front

How many hydrogen atoms are in 4H₂O?

Back

There are 8 hydrogen atoms in 4H₂O (4 x 2 = 8).

Front

What is the total number of atoms in 5Na₃PO₄?

Back

There are 40 atoms in 5Na₃PO₄ (5 x (3 Na + 1 P + 4 O) = 40).

Front

What is the first step in balancing a chemical equation?

Back

The first step in balancing a chemical equation is to write down the number of atoms of each element present in the reactants and products.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is important because it reflects the law of conservation of mass, ensuring that matter is neither created nor destroyed in a chemical reaction.