Question
Key features of chemical reactions: Measurable energy change square are broken up or formed At least 1 new No atoms are created
Answer
4.6
(305 Votes)
Imani
Master · Tutor for 5 years
Answer
All the features mentioned in the question are characteristics of a chemical reaction.
Explanation
## Step 1: Identify the key features of chemical reactions mentioned in the question. The features mentioned are: 1. Measurable energy changes are present.2. Bonds are broken or formed.3. At least one new substance is created.4. No atoms are created or destroyed.## Step 2: Analyze each feature to determine if it is a characteristic of a chemical reaction.### Feature 1: Measurable energy changes are present.This is a characteristic of a chemical reaction. Energy is either absorbed or released during a chemical reaction. This energy change can be measured.### Feature 2: Bonds are broken or formed.This is also a characteristic of a chemical reaction. During a chemical reaction, the bonds between atoms in the reactants are broken and new bonds are formed to create the products.### Feature 3: At least one new substance is created.This is another characteristic of a chemical reaction. The products of a chemical reaction are new substances that have different properties from the reactants.### Feature 4: No atoms are created or destroyed.This is a characteristic of a chemical reaction as well. This is in line with the law of conservation of mass, which states that matter cannot be created or destroyed. Therefore, the number of atoms of each element in the reactants must equal the number of atoms of that element in the products.