does a physical or chemical change occur when sugar dissolves in water?
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A good example of that is dissolving sugar in water. Once the sugar has all dissolved, you have molecules of sugar mixed in with the molecules of water. The chemical formulas at the end are the same as they were at the start, so this is a physical change.
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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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Dissolution is not a chemical change. However, not all substances will dissolve in water. Salts will dissolve, the covalent bond of water "rips" the ionic bonds of the salts. Sand will not dissolve in water because the "bond" of water is not strong enough to dissolve the sand.
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Examples. Sugar, sodium chloride, and hydrophilic proteins are all substances that dissolve in water. Oils, fats, and certain organic solvents do not dissolve in water because they are hydrophobic.
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Increasing the surface area of the solute will increase the rate of dissolving. For example, if you place a whole sugar cube in water it will take a really long time for it to dissolve. ... Stirring will also speed up the rate of dissolving a solid solute in a liquid solvent.
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Dissolving and mixing: Simple forms of dissolving and mixing are considered physical changes, but mixing the ingredients of a cake is not a simple mixing process. A chemical change starts to occur when the ingredients are mixed, forming new substances.
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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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As a result of a chemical reaction, new substances with new properties are formed. In this lesson, students will learn about physical and chemical changes. Physical changes will be demonstrated with playdough and/or M&M's Candy. The chemical change will be demonstrated by making “Elephant's Toothpaste.”
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In a solution, the solute is the substance that dissolves, and the solvent is the substance that does the dissolving. For a given solvent, some solutes have greater solubility than others. For example, sugar is much more soluble in water than is salt. But even sugar has an upper limit on how much can dissolve.
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When sugar dissolves in water, the weak bonds between the individual sucrose molecules are broken, and these C12H22O11 molecules are released into solution. It takes energy to break the bonds between the C12H22O11 molecules in sucrose.
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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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Sugar dissolves in water because energy is given off when the slightly polar sucrose molecules form intermolecular bonds with the polar water molecules. ... When one of these solids dissolves in water, the ions that form the solid are released into solution, where they become associated with the polar solvent molecules.
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Physical changes are usually about physical states of matter. Chemical changes happen on a molecular level when you have two or more molecules that interact. Chemical changes happen when atomic bonds are broken or created during chemical reactions.
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When sugar or another substance is dissolved in water, it disappears from view and forms a homogeneous mixture with the water, also called a solution. A solution consists of two parts, a solute that is dissolved and a solvent that the solute is dissolved into.
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Sugar dissolves and is spread throughout the glass of water. ... The sugar-water is a homogenous mixture while the sand-water is a heterogeneous mixture. Both are mixtures, but only the sugar-water can also be called a solution.
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The physical change is the melting of the wax. The chemical change is the formation of CO2. The answer is yes. Both a physical change and a chemical change can happen at the same time.
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Chemical changes and physical changes. Chemical changes happen when chemical reactions occur. They involve the formation of new chemical elements or compounds . ... In a physical change, a substance simply changes physical state , eg from a solid to a liquid.