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An Alka-Seltzer tablet in water is a fizzing chemical reaction. The Alka-Seltzer bubbles and fizzes when it is dropped in the water.

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Burning toast is an example of replacement. When the normal piece of bread is burnt, you can not get it back to its original state.

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In this experiment, ion and sulfur were mixed and one was heated and created a new substance. It turned black and became was no longer magnetic

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Chemicals react and produce pure new substances | Chemical Compounds | Chemistry

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When potassium iodide and lead nitrate mix, a new substance is formed. The color changes to yellow, but a new substance was also created.

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Citric acid solution and baking soda is a temperature, but can also be a new substance reaction. When the two chemicals combine, they release energy and become cold, but they also form a new substance called Trisodium Citrate.

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When a person sweats, they give off a scent. The heat produces sweat and the mixture of the bacteria from the sweat glands and the perspiration create a smell.

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Frying an egg is replacement because after you fry an egg, you cannot reverse it to its beginning state.

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A Cool Pack is a temperature chemical reaction. The Cool Pack has an endothermic reaction when it is popped, and it gets cold.

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Baking a cake is a replacement chemical reaction. You start with the batter and once you bake it in the oven, a solid substance replaces the liquid.

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Fireworks are an example of a temperature chemical reaction. They release and absorb energy when they explode.

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The baking soda and vinegar experiment is an example of fizzing because when the chemicals are mixed, they bubble and create a gas that makes the balloon expand.

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How to Blow Up a Balloon With Baking Soda And Vinegar - Cool Science Experiments

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Moldy meat a chemical reaction of aroma because when it expires, it creates bacteria with other chemicals and gives off a new scent.

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This is an example of a chemical reaction that fizzes because when the Mentos and Diet Coke bond, bubbles are produced and it fizzes up in the air.