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Balancing Chemical Equations

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Questions and Answers

What is the purpose of putting a coefficient in front of sodium hydroxide in a chemical equation?

To balance the hydrogen atoms
To balance the sodium atoms
To balance the oxygen atoms (correct)
To balance all elements in the equation

In balancing a chemical equation, why is it important to start with elements like sodium and potassium?

They occur as single-element molecules (correct)
They have the highest atomic mass
They are easy to balance
They are the most reactive elements

Why is increasing the coefficient of potassium in the equation a simple fix when balancing it?

It easily forms bonds
It is a noble gas
It reacts vigorously with water
It occurs as a single atom molecule (correct)

What is the benefit of increasing the coefficient in front of carbon dioxide when balancing carbon in a chemical equation?

To balance carbon and oxygen atoms simultaneously (B) Signup and view all the answers

How does balancing an equation ensure that a chemical reaction is correctly represented?

It conserves the number of atoms of each element (C) Signup and view all the answers

Why does balancing each atom individually help simplify the overall process of balancing a chemical equation?

It breaks down complex reactions into simpler components (A) Signup and view all the answers

What does adding a coefficient in front of an element aim to achieve in a chemical equation?

To ensure conservation of atoms for that element (B) Signup and view all the answers

Why is it crucial to perform a final check after balancing all elements in a chemical equation?

To verify that all elements are indeed balanced (D) Signup and view all the answers

What happens if there is an extra molecule of an element on one side of a chemical equation that needs balancing?

Another molecule of that element must be added on the other side to balance it. (A) Signup and view all the answers

In a balanced chemical equation, why should the number of atoms be equal on both sides?

To comply with the law of conservation of mass. (A) Signup and view all the answers

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