is dissolve an example of a chemical change?
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Why Dissolving Salt Is a Chemical Change Therefore, dissolving salt in water is a chemical change. ... In contrast, dissolving a covalent compound like sugar does not result in a chemical reaction. When sugar is dissolved, the molecules disperse throughout the water, but they do not change their chemical identity.
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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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We call substances that dissolve in water soluble. Sugar and salt are examples of soluble substances. Substances that do not dissolve in water are called insoluble. Sand and flour are examples of insoluble substances.
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For example salt dissolving in water is usually considered to be a physical change, however the chemical species in salt solution (hydrated sodium and chlorine ions) are different from the species in solid salt.
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Why Dissolving Salt Is a Chemical Change Therefore, dissolving salt in water is a chemical change. ... When sugar is dissolved, the molecules disperse throughout the water, but they do not change their chemical identity.
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Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
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If the sugar has been burned, it's gone through a chemical reaction. ... Dissolving sugar in water is a process that is pretty easy to reverse - it is a physical change. Crushing, mixing, dissolving, melting, or boiling something are examples of physical changes.
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['Chemical changes make new substances. Anytime a new substance is made, a chemical change takes place. ... ', 'Physical changes do not make a new substance. Physical changes come in many forms. ... ', 'Physical changes also happen when matter changes states. ... ', 'Chemical and physical changes are all around us.']
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17. An example of a chemical change is when water freezes. 18. When platinum is heated, then cooled to its original state, we say this is a physical change.
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What is an example of a chemical change that happens inside your body? Food being broken down by acids in your stomach. Food being broken down into small pieces by your teeth. Food being moved to your stomach.
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The correct answer is A chemical change results in a new substance being formed; whereas, a physical change will result in a different state of matter.
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Food is chemically changed in digestion when new, smaller substances are formed. These chemical changes are examples of chemical digestion. Chemical digestion begins in the mouth when enzymes in saliva begin to break down carbohydrates. Most chemical changes in digestion occur in the small intestine.
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At the molecular level, chemical change involves making or breaking of bonds between atoms. These changes are chemical - for example, iron rusts and iron oxide is formed. ... Chemical reaction is a process of changing from one chemical state to another and chemical change is a change in the state of a material.
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A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
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Which is an example of a chemical change? Ans: A chemical transition is the result of a chemical reaction, whereas a physical change is when the structure of matter changes, but not the chemical identity. Burning, cooking, rusting, and rotting are examples of chemical changes.
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What would be an example of a chemical change that took a long time to occur? An example is rusts when it is exposed to oxygen gas in the air. You can watch the process happen over a long period of time. ... The chemical change as hydrogen peroxide becomes water cannot be seen since both liquids are clear.
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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.