Balancing Reactions Flashcard

Front

What are the smaller numbers that you CANNOT change in a chemical equation?

Back

Subscript

Front

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

Back

The mass is the same.

Front

Balance this equation: CH₄ + O₂ --> CO₂ + H₂O. What are the coefficients?

Back

1,2,1,2

Front

In the equation AcF₃ +..... Li → Ac + 3 LiF, what coefficient will go in front of Li on the reactant side to balance this equation?

Back

3

Front

In the compound Mg(NO₃)₂, how many atoms of nitrogen are present?

Back

2

Front

What is a 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

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.

Front

What is the difference between reactants and products in a chemical reaction?

Back

Reactants are substances that undergo a chemical change, while products are the substances formed as a result of that change.

Front

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

Back

Count the subscripts in the chemical formula; if there is no subscript, it is understood to be 1.

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms for each element is the same on both sides of the equation.