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Properties+Changes
ChemPhysProp
| Question | Answer |
|---|---|
| Physical properties | Characteristics of a substance that do not involve forming a new substance. They are observable with our 5 senses |
| Color | Physical properties |
| Texture | Physical properties |
| Density | Physical properties |
| Smell | Physical properties |
| Solubility | Physical properties |
| Taste | Physical properties |
| Melting point | Physical properties |
| Conductivity | Physical properties |
| Chemical properties | Characteristics that describe how a substance interacts with other substances, or changes into something new(Only observable during a chemical reaction) |
| Flammability | Chemical properties |
| Combustibility | Chemical properties |
| Decomposition | Chemical properties |
| Rust | Chemical properties |
| Endothermic/Exothermic reactions | Chemical properties |
| Physical change | A change that does not produce a new substance. Molecular structures are not changed. |
| Tearing a piece of paper in half | Physical Change |
| Melting ice | Physical Change |
| Chemical change | A change that forms a new substance. If the products are different from the starting materials, then a chemical change has taken place. |
| Burning paper | Chemical change |
| Digestion of food | Chemical change |
| Rust | Chemical change |
| Photosynthesis | Chemical change |
| Evidence of Chemical Change (5) | -A change in color -Heat or light are produced or absorbed – -Endothermic, Exothermic -Production of gas -A precipitate forms (two liquids mixed together to form a solid) -The change is (generally) difficult to reverse. |