Identify the following as either a physical or a chemical property.
1. Diamond is one of the hardest known substances.
2. Carbon monoxide is a poisonous gas.
3. Soap is slippery.
4. Silver tarnishes.
5. Gold does not rust.
6. Carbon dioxide freezes at -78°C.
7. Tin is a shiny, gray metal.
8. Sulfur burns in air.
9. Aluminum has a low density
10. Sodium burns in the presence of chlorine gas.
11. Mercury is a liquid at room temperature.
12. Water boils at 100°C at average sea-level pressure.
13. Limestone gives off carbon dioxide when heated.
14. Hydrogen sulfide has a pungent odor.
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8 is chemical change
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