what are the indicators of a chemical change

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Some signs of a chemical change are achange in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change. Challenge: food cooking, rust formation, tarnish forming on doorknobs, fuel burning for heat, tarnished penny.

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What Are Five Indicators of a Chemical Change? What Are Five Indicators of a Chemical Change? Five indicators of a chemical change are color change, temperature change, precipitate formation, gas bubble formation and smell or taste change.

Signs and Evidence. There are a variety of signs that may provide clues that a chemical change has entered the building. Let’s look at the following five signs: Odor. Energy change. Gas bubbles. Precipitate formation. Color change.

Chemical changes are distinguishable from physical changes by five major indicators. If at least one of these indicators is present during a change in matter, a chemical change is probably occurring. The five major indicators of chemical changes are:

Indicators are weak acids or weak bases that show a change in colour as the concentration of Hydrogen ions in a solution changes or the pH of a solution changes. The indicators dissociate slightly in the water to form ions. Some examples of indicators are Litmus, turmeric, phenolphthalein, etc.