Classify the following properties of ozones as physical or chemical:
1.bluish color
2.pungent odor
3.reactive towards oxygen
4.decomposes to oxygen on exposure to ultraviolet light
5.it is a gas
Is this correct?
1.chemical
2.physical
3.chemical
4.chemical
5.phsical
Color is a physical property.
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Your classification is mostly correct. Here's a breakdown of each property:
1. Bluish color: Physical Property
A bluish color is a physical property because it describes the visual appearance of the substance without any chemical changes occurring.
2. Pungent odor: Physical Property
Similar to the bluish color, the pungent odor describes the sensory perception of the substance without any chemical changes occurring.
3. Reactive towards oxygen: Chemical Property
This property indicates that ozone reacts with oxygen, suggesting a chemical reaction between the two substances.
4. Decomposes to oxygen on exposure to ultraviolet light: Chemical Property
The decomposition of ozone to oxygen when exposed to ultraviolet light is a chemical property. It indicates a chemical change occurring in the presence of specific conditions (ultraviolet light).
5. It is a gas: Physical Property
The fact that ozone is a gas at a certain temperature and pressure is a physical property. It describes the state of matter in which ozone exists under normal conditions.
To summarize:
- Physical properties describe the characteristics of a substance without involving any chemical changes.
- Chemical properties describe how a substance behaves or reacts chemically with other substances.