The reaction of sodium and chlorine to form salt has the following properties:
1- It gives out (releases) heat. This means that it is an exothermal reaction
2- A new compound is formed and the components of this compound cannot be separated by physical means. This means that a chemical change occurred.
Based on this:
The reaction of sodium and chlorine to form salt is best described as an<span> exothermic chemical change reaction.</span>
Answer:
Correct answer is B.
Explanation:
Took the test and got this right. :)
Answer:
The five conditions of chemical change are color change, the formation of a precipitate, formation of a gas, odor change, temperature change.
1. 5 atoms
2. 5 atoms
3. 11 atoms
4. 5 atoms
5. 18 atoms