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Add dye or food coloring you may see a diffence in color. The water may take longer to have the dye take over. Your cheimcal may not or there is no color.

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When ice melts why can you tell there is not a chemical change?

Melting is not a chemical change because the chemical formula of water remain unchanged.


How can you tell when a chemical has reacted?

You can tell when a chemical reaction has occurred by observing changes in color, temperature, formation of a gas, or the formation of a precipitate. Additionally, a chemical reaction often involves the breaking and forming of bonds between atoms, resulting in the rearrangement of molecules.


When a kettle is boiled you can tell it is NOT chemical change because?

When a kettle is boiled, it is not a chemical change because the water molecules are simply changing state from liquid to gas due to the heat, without any change in their chemical composition. The process is reversible, as the water vapor can condense back into liquid water.


Is water boiling in a pan a physical or chemical change?

It depends on what is boiling. If you are boiling WATER, then it is NOT a chemical change, it is a physical change (change of state from liquid to gas). If you are cooking food on the stove, a chemical change is occuring. That is, the chemical bonds within the food molecules are actually changing. One way you can tell that it is a chemical change is that you can't "uncook" food, but you can condense steam back into water.


What is the difference between a subscript and a coefficient in a chemical formula?

The subscripts tell you how the atoms are bound together. The coefficient tells you how many atoms there are.

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When ice melts why can you tell there is not a chemical change?

Melting is not a chemical change because the chemical formula of water remain unchanged.


How can you tell the difference between physical and chemical properties?

You can tell the difference by knowing that a physical property changes shape and that a chemical property changes the substance.


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How to tell ice is physical change?

No gas or chemical is released. That is the easiest way to differ between a chemical and physical change.