Concept explainers
Interpretation:
Two examples of chemical change needs to be explained.
Concept introduction:
When a new product is formed in a
Answer to Problem 1RQ
A chemical reaction between aluminum and oxygen to form aluminum oxide is a chemical change.
The reaction between acid and base to form a new compound is a chemical change and it is irreversible.
Explanation of Solution
In a chemical reaction, the property of the product is different from the reactant. The composition of the new product is different from the starting reactant. So, it is considered a chemical change. A chemical change is an irreversible process.
The reaction between aluminum and oxygen forms its oxide and in the second example, acid-base reacts together and forms salt. Here, both products have different properties from the original reactant so these are considered as chemical change.
Chapter 1 Solutions
World of Chemistry, 3rd edition