Balancing Chemical Reactions

Front

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

Back

It represents 'yield', indicating the direction of the reaction from reactants to products.

Front

What are the substances on the left side of a chemical equation called?

Back

They are called 'reactants'.

Front

What is the term for the large number in front of a chemical formula?

Back

It is called a 'coefficient'.

Front

In the equation _BaS + _PtF2 → _BaF2 + _PtS, what does the underscore represent?

Back

The underscores represent coefficients that need to be determined to balance the equation.

Front

How many atoms of aluminum are present in the equation 4Al + 3O2 --> 2Al2O3?

Back

There are 4 atoms of aluminum on each side of the equation.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation.

Front

What is the purpose of balancing chemical equations?

Back

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

Front

What are products in a chemical reaction?

Back

Products are the substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

What is the difference between a reactant and a product?

Back

Reactants are the starting materials in a chemical reaction, while products are the substances produced.

Front

What does it mean if a chemical equation is unbalanced?

Back

It means that the number of atoms of each element is not the same on both sides of the equation.