If something is a physical property, it is possible to measure the property through observation that does not irreversibly changing the material that has the property. Chemical properties, on the other hand, are attributes of a substance that allow for a chemical change, often irreversible. They ...
A. chemical reaction B. physical change C. electrical reaction D. biological change 相关知识点: 试题来源: 解析 B。解析:水沸腾是物理变化,只是状态改变,没有新物质生成。选项 A 化学反应会有新物质生成,不符合。选项 C 电反应与题目无关。选项 D 生物变化不符合水沸腾的情况。反馈...
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Is flammability an extensive property? Extensive properties depend on the quantity of the substance (mass, volume). Chemical matter properties include flammability and reactivity. ... So physical properties are things like color, odor, density, melting and boiling points and hardness especially if you...
Mixturesdo not have fixed precise melting and boiling points (whichelementsandcompoundsdo have), but instead mixtures melt / freeze and boil / condense over a range of temperatures according to the physical properties of the different constituents of the mixture. ...
What physical properties of calcium chloride, citric acid, sodium iodide, potassium iodide, and sucrose have in common? Sodium metal is extremely reactive with chlorine gas. Is this a physical property or a chemical property? Explain. Describe the nature and...
Titanium is a shiny gray metal with a low corrosion rate and high strength. It is a very useful metal for its refractory properties due to its high melting and boiling points. Titanium metal compounds include oxides, sulfides, alkoxides, nitrides, carbides, etc. ...
True or False The specific heat of a substance is the amount of energy required by the substance to change phase. Specific Heat of a Substance: Substances have physical and chemical properties. Physical properties are the properties that can be determined ...
The water is the life fountainhead, as the saying goes, the “person may not eat meal by first, but cannot on first not drink water the “humanitys life to the boiling water, the water is not the humanity lives the essential important resources. ...
Describe whether the given statement describes a physical or chemical property. a) chlorine is a green gas Explain how sulfur dioxide, as emitted by some power plants, ends up as a sulfuric acid, and sulfate ion in rivers and lakes. Explain the importance of ...