Balancing Chemical Equations

Front

What is the little number after an element in a chemical equation called?

Back

Subscript

Front

What is a coefficient in a chemical equation?

Back

The large number in front of a chemical formula.

Front

What does it mean for a chemical equation to be balanced?

Back

The number of atoms of each element is the same on both sides of the equation.

Front

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

Back

Add the number of atoms of each element, multiplied by their respective subscripts.

Front

What is the purpose of balancing chemical equations?

Back

To obey the law of conservation of mass, ensuring that matter is neither created nor destroyed.

Front

What is the chemical formula for water?

Back

H₂O

Front

What is the difference between a reactant and a product in a chemical equation?

Back

Reactants are substances that start a chemical reaction, while products are substances formed as a result of the reaction.

Front

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

Back

It indicates the direction of the reaction, showing that reactants are transformed into products.

Front

What is the total number of atoms in 2H₂ + O₂?

Back

6 atoms (4 from H₂ and 2 from O₂).

Front

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

Back

It states that mass is neither created nor destroyed in a chemical reaction.