7.1 Counting Atoms

Front

What is the definition of a coefficient in a chemical equation?

Back

A coefficient is a number written in front of a chemical formula that indicates how many molecules or atoms of that substance are involved in the reaction.

Front

How many atoms of Oxygen are in Fe(NO₃)₃?

Back

9

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Back

Products

Front

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

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.

Front

What is the purpose of balancing chemical equations?

Back

To ensure that the law of conservation of mass is followed, meaning that the total mass of reactants equals the total mass of products.

Front

What is a subscript in a chemical formula?

Back

A subscript is a number written below and to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.

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Back

4

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Front

What is the difference between reactants and products?

Back

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

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.