Which of the following are chemical changes?
Answers
Answer: the changes which are irreversible
Explanation:
Explanation:
In a chemical change, new substances are formed. In order for this to occur, the chemical bonds of the substances break, and the atoms that compose them separate and rearrange themselves into new substances with new chemical bonds. When this process occurs, we call it a chemical reaction. A chemical reaction is the process in which one or more substances are changed into one or more new substances.
Key takeways: chemical changes
1. A chemical change results from a chemical reaction
2. Examples of chemical changes are burning, cooking, rusting, and rotting.
3. physical changes can be undone, if energy is input. The only way to reverse a chemical change is via another chemical reaction.
Examples of Chemical Changes:-
1. Burning wood
2. Souring milk
3. Mixing acid and base
4. Digesting food
5. Cooking an egg
6. Heating sugar to form caramel
7. Baking a cake
8. Rusting of iron