what are the chemical and physical properties of elements?
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['Atomic number. The atomic number indicates the number of protons within the core of an atom. ... ', 'Atomic mass. The name indicates the mass of an atom, expressed in atomic mass units (amu). ... ', 'Electronegativity according to Pauling. ... ', 'Density. ... ', 'Melting point. ... ', 'Boiling point. ... ', 'Vanderwaals radius. ... ', 'Ionic radius.']
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Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others.
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physical and chemical properties. Examples of physical properties are: color, smell, freezing point, boiling point, melting point, infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density. There are many more examples.
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Summary. Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust. Reactivity is the ability of matter to react chemically with other substances.
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Physical properties are used to observe and describe matter. Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others.
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Different isotopes of an element generally have the same physical and chemical properties. That's because they have the same numbers of protons and electrons.
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The modern periodic law states that the physical and chemical properties of the elements are the periodic functions of their atomic numbers. Scientists arranged elements in increasing order of their atomic numbers from left to right across each row.
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A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.
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A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. ... To identify a chemical property, we look for a chemical change.
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Physical Properties. Physical properties include form (particulate or bulk); porosity (micro- or macroporosity, non- or interconnecting porosity); surface area; and crystallinity (reflecting crystal size, crystal perfection, and grain size as affected by sintering conditions).
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Examples of chemical properties are: heat of combustion, reactivity with water, PH, and electromotive force. The more properties we can identify for a substance, the better we know the nature of that substance.
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Answer and Explanation: The chemical properties of an element are determined by the subatomic particle known as a proton. This is a positively charged particle found in the...
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The same element has different physical properties in different phases or in different compounds. Chemical properties describe a substance's ability to react and form new substances. They can only be tested by reacting the material with other things to see how it changes.
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4. Characteristic Properties of Matter—The Key Ideas The physical properties of matter include color, odor, density, solubility, melting point, boiling point, and electrical conductivity. These are properties that can be observed without chemically changing the substance. 5.
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['Metallic Character.', 'Melting and Boiling Point.', 'Atomic (Covalent) and Ionic Radii.', 'The ionization energy (IE)', 'Colour.', 'Formation of Alloys.', 'Interstitial Compounds.', 'Variable Oxidation State.']
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Physical properties are those in which the chemical formula does not change. ... Physical properties include magnetism, density, molecular mass, viscosity. Chemical properties include combustion, dimerization, polymerization, and reaction with HCl.
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Chemical properties are very useful in identifying substances. However, unlike physical properties, chemical properties can only be observed as the substance is in the process of being changed into a different substance. Iron metal rusts. Mercury is a very dense liquid.