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Physical Change is when something such as a substance is changed physically.

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Chemical Change is when two chemicals mix together to make a new substance.

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Physical and Chemical changes are different because in Physical changes they do not involve energy and Chemical changes do involve the production of energy .

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Five physical properties are color, density, hardness, and melting and boiling points.

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Some common examples of physical changes are: melting, freezing, condensing, breaking, crushing, cutting, and bending.

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ASMR Cutting Paper | Table Rubbing | Scissor Sounds | Relaxing Sleep | Paper Crinkling | NO TALKING

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Some chemical changes are Burning of paper and log of wood, Digestion of food, Boiling an egg, Chemical battery usage, Electroplating a metal.

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Funny Elephant Toothpaste (Chemical Reaction)

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This chemical reaction looks like magic (iodine clock)

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Chemical Change that is a Combustion reaction. 

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Chemical Change that is a Combustion reaction. 

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One chemical change that is a combustion reaction is the burning of natural gas, the balanced equation for the burning of natural gas is CH4+2O2→CO2+2H2O .

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Chemical Change that is a Decomposition reaction

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Chemical Change that is a Decomposition reaction

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One chemical change that is a decomposition reaction is,  the breakdown of hydrogen peroxide to water and oxygen,   the balanced equation for this chemical reaction 2 H2O2 → 2 H2O + O2 .

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Chemical Change that is a synthesis reaction

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Chemical Change that is a synthesis reaction

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An example of a synthesis reaction is the combination of sodium (Na) and chlorine (Cl) to produce sodium chloride (NaCl).

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Chemical Change that is a Single replacement reaction

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Chemical Change that is a Single replacement reaction

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An example of a single replacement reaction occurs when potassium (K) reacts with water (H ₂ O).   The equation for the reaction is: 2K + 2H₂O → 2KOH + H.

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Chemical Reaction that is Double Replacement 

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Chemical Reaction that is Double Replacement 

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odium hydroxide (a base) reacts with ammonium chloride (salt) to form sodium chloride, the equation is NH 4 Cl + NaOH → △ NaCl + H 2 O + NH 3 ( g ).