Counting Atoms & Balancing Equations

Front

What are the numbers found on the lower right-hand side of an element symbol?

Back

Subscript

Front

In the equation 2H₂ + O₂ ----> 2H₂O, what is the product?

Back

2H₂O

Front

What do coefficients in chemical formulas do?

Back

Multiply EVERYTHING!

Front

Why is the equation H₂ + O₂ --> H₂O not balanced?

Back

Each side of the equation has a different number of oxygen atoms.

Front

What does the law of conservation of matter state?

Back

Atoms are neither created nor destroyed in chemical reactions.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are present.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does it mean to balance a chemical equation?

Back

To ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during the reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.