things that are both physical and chemical changes?
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Melting and burning of candle wax is an example of both physical and chemical changes. Answer: Burning of wood is a example of both physical and chemical change. When wood is burnt the moisture present in it turns to vapour ,it is a physical change while it burns and generate CO2 is a chemical change.
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Examples of physical changes are boiling, melting, freezing, and shredding. Often, physical changes can be undone, if energy is input.
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A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.
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Yes physical and chemical changes can occur together. eg:when a candle is burnt, water vapour, carbon dioxide, and many other materials are released which is a chemical change. but the melting of wax is a physical change.
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Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Often, physical changes can be undone, if energy is input.
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A chemical change (chemical reaction) is a change of materials into other, new materials with different properties, and one or new substances are formed. Burning of wood is a chemical change as new substances which cannot be changed back (e.g. carbon dioxide) are formed.
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Physical changes do not alter the nature of the substance, they simply alter the form. Pure substances, such as compounds, can be separated through chemical changes. Chemical changes change the chemical composition of a substance and can only occur through a chemical reaction.
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In a chemical change, a new substance is made, like when you burn a candle. In a physical change, no new substance is made, like when water turns to ice. To better understand the difference between chemical vs.
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Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
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A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Absolute confirmation of a chemical change can only be validated by chemical analysis of the products!
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Physical versus chemical Sometimes it can be useful to distinguish between different types of properties. Physical properties refer to properties that can be observed or measured without changing the composition of the material. Examples include colour, hardness and smell and freezing, melting and boiling points.
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Physical changes. Physical changes such as state change and dissolving are reversible, and there is no change in total mass when they happen. Flowing and diffusion happens in liquids and gases, but not in solids.
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They are also physical changes because they do not change the nature of the substance. Boiling waterBoiling water is an example of a physical change and not a chemical change because the water vapor still has the same molecular structure as liquid water (H2O).
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Yes, in some cases the physical and the chemical changes can occur together. One such example is the burning of candle. The wax present in the candle changes to liquid state. ... This means that a chemical reaction or change is also taking place.
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Some example of physical change is freezing of water, melting of wax, boiling of water, etc. ... In a physical change, no new substance is formed. A chemical change is always accompanied by one or more new substance(s). Physical change is easily reversible i.e original substance can be recovered.
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Dissolving sugar in water is an example of a physical change. Here's why: A chemical change produces new chemical products. In order for sugar in water to be a chemical change, something new would need to result. ... If you evaporate the water from a sugar-water solution, you're left with sugar.
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Key Points. Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.