what are 5 examples of a chemical change?
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['Burning wood.', 'Souring milk.', 'Mixing acid and base.', 'Digesting food.', 'Cooking an egg.', 'Heating sugar to form caramel.', 'Baking a cake.', 'Rusting of iron.']
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List some examples of physical change. Physical change involved tearing, breaking, grinding a state of matter, changing the state of matter and dissolving a substance. A physical change is easy to reverse. ... Some examples of chemical change is burning, rusting of iron, souring of milk and decaying of food.
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When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an energy change as new products are generated. An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen.
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The following can indicate that a chemical change has taken place, although this evidence is not conclusive: Change of odor. Change of color (for example, silver to reddish-brown when iron rusts). Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat.
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Brilliant fireworks are exploding in the night sky. ... The explosion of fireworks is an example of chemical change. During a chemical change, substances are changed into different substances. Another words, the composition of the substance changes.
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Chemical reactions are common in daily life, but you may not recognize them. Look for signs of a reaction. Chemical reactions often involve color changes, temperature changes, gas production, or precipitant formation. Simple examples of everyday reactions include digestion, combustion, and cooking.
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['Precipitation, or double-replacement reaction.', 'Acid-base, or neutralization reaction.', 'Oxidation-Reduction (Redox) Reactions.', 'Combustion Reaction.', 'Synthesis Reactions.', 'Decomposition Reactions.', 'Single Replacement Reactions.']
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An chemical change occurs when a new substance is produced having different characteristics from the original substance. ... Some examples of chemical change is burning, rusting of iron, souring of milk and decaying of food.
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['A change of color occurs during the reaction.', 'A gas is produced during the reaction.', 'A solid product called a precipitate is produced in the reaction.', 'A transfer of energy occurs as a result of the reaction.']
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['Combination.', 'Decomposition.', 'Single displacement.', 'Double displacement.', 'Combustion.', 'Redox.']
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A chemical change must occur. Chemical bonds are made or broken in order to create a new molecule. One example of a chemical reaction is the rusting of a steel garbage can. That rusting happens because the iron (Fe) in the metal combines with oxygen (O2) in the atmosphere.
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Examples of physical change include changes in the size or shape of matter. Changes of state—for example, from solid to liquid or from liquid to gas—are also physical changes. Some of the processes that cause physical changes include cutting, bending, dissolving, freezing, boiling, and melting.
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['Elements. ... ', 'Melting and Boiling Points (increases down the group)', 'Atomic Radius (increases down the group)', 'Ionization Energy (decreases down the group)', 'Electronegativity (decreases down the group)', 'Electron Affinity (decreases down the group)', 'Reactivity of Elements (decreases down the group)']
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A "natural" chemical change would be burning wood, cooking eggs, baking a cake and milk going sour. These changes can't be changed so therefore they are chemical changes. A natural physical change would be mixing salt or sand with water, melting or boiling water, cutting wood, and shredding paper.
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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). If the bubbles were caused by the decomposition of a molecule into a gas (such as H2O →H2 and O2), then boiling would be a chemical change.
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A chemical change must occur. One example of a chemical reaction is the rusting of a steel garbage can. That rusting happens because the iron (Fe) in the metal combines with oxygen (O2) in the atmosphere. Chemical bonds are created and destroyed to finally make iron oxide (Fe2O3).
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Chemical reactions often involve color changes, temperature changes, gas production, or precipitant formation. Simple examples of everyday reactions include digestion, combustion, and cooking.