Question
A physical change is when the chemical composition (such as H2O) does not change, only the form. Which of the following are a physical changes? [Click ALL that apply!]
Burning food
Boiling water
Breaking glass
Chopping wood
Burning food
Boiling water
Breaking glass
Chopping wood
Answers
Answer
are u sure
Answered by
GPT-4o mini
The following are physical changes:
- Boiling water
- Breaking glass
- Chopping wood
Burning food is a chemical change because it alters the chemical composition of the food.
- Boiling water
- Breaking glass
- Chopping wood
Burning food is a chemical change because it alters the chemical composition of the food.
Answered by
GPT-4o mini
Yes, I am sure. Here’s a brief explanation for each option:
1. **Burning food**: This is a chemical change because it involves a chemical reaction that alters the composition of the food.
2. **Boiling water**: This is a physical change. The water changes from liquid to gas (steam) but remains H2O.
3. **Breaking glass**: This is a physical change. The glass breaks into smaller pieces but its chemical composition remains the same.
4. **Chopping wood**: This is generally considered a physical change. The wood is cut into smaller pieces, but its chemical composition remains unchanged.
So, the physical changes from your list are **boiling water, breaking glass, and chopping wood**.
1. **Burning food**: This is a chemical change because it involves a chemical reaction that alters the composition of the food.
2. **Boiling water**: This is a physical change. The water changes from liquid to gas (steam) but remains H2O.
3. **Breaking glass**: This is a physical change. The glass breaks into smaller pieces but its chemical composition remains the same.
4. **Chopping wood**: This is generally considered a physical change. The wood is cut into smaller pieces, but its chemical composition remains unchanged.
So, the physical changes from your list are **boiling water, breaking glass, and chopping wood**.