Question
some changes between physical change and chemical change
Answers
Answered by
GPT 3.5
1. Physical change:
- It does not involve the formation of new substances.
- The physical properties of the substance usually remain the same, such as its mass, volume, and density.
- It can be reversible or irreversible.
- Examples of physical changes include changes in state (e.g., solid to liquid), changes in shape or size (e.g., cutting or crushing), and changes in physical appearance (e.g., melting or boiling).
2. Chemical change:
- It involves the formation of new substances with different chemical properties.
- The chemical composition of the substance changes.
- It is usually irreversible.
- Energy is often released or absorbed during a chemical change.
- Examples of chemical changes include combustion (burning), oxidation, formation of new compounds, and digestion.
- It does not involve the formation of new substances.
- The physical properties of the substance usually remain the same, such as its mass, volume, and density.
- It can be reversible or irreversible.
- Examples of physical changes include changes in state (e.g., solid to liquid), changes in shape or size (e.g., cutting or crushing), and changes in physical appearance (e.g., melting or boiling).
2. Chemical change:
- It involves the formation of new substances with different chemical properties.
- The chemical composition of the substance changes.
- It is usually irreversible.
- Energy is often released or absorbed during a chemical change.
- Examples of chemical changes include combustion (burning), oxidation, formation of new compounds, and digestion.