Chemical changes change substances in a way that they can never go back to how they were before. This happens because the tiny particles that make up the substances, called atoms, rearrange and connect differently. This results in new substances. Here are some important points to understand:
New Substances Created: During a chemical change, like burning or fermenting, the original substances react and create new ones. These new substances have different properties. For example, when wood burns, it turns into ash and gases. You can't turn the ash and gas back into wood.
Can't Go Back: Many chemical changes cannot be undone. For example, when iron rusts, you can't simply "un-rust" it. Once an egg is cooked, you can’t change it back to its raw state.
Energy Changes: Chemical changes often involve energy shifts. This could mean producing heat or light, which shows that a permanent change in matter has occurred.
In summary, chemical changes show us that some transformations are permanent, changing the very nature of the materials involved!
Chemical changes change substances in a way that they can never go back to how they were before. This happens because the tiny particles that make up the substances, called atoms, rearrange and connect differently. This results in new substances. Here are some important points to understand:
New Substances Created: During a chemical change, like burning or fermenting, the original substances react and create new ones. These new substances have different properties. For example, when wood burns, it turns into ash and gases. You can't turn the ash and gas back into wood.
Can't Go Back: Many chemical changes cannot be undone. For example, when iron rusts, you can't simply "un-rust" it. Once an egg is cooked, you can’t change it back to its raw state.
Energy Changes: Chemical changes often involve energy shifts. This could mean producing heat or light, which shows that a permanent change in matter has occurred.
In summary, chemical changes show us that some transformations are permanent, changing the very nature of the materials involved!