A chemical change is when fire burns wood. The wood cannot be put back into its original form. When you chop down wood to make a fence it is not chemical change because it is still the same color but might not be the same shape. The wood burned changes the color of it to black. Chemical changes are when something smells, color, etc. If the shape is different, it is just physical change.
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Burning of paper and log of wood.
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A chemical change is when fire burns wood. The wood cannot be put back into its original form. When you chop down wood to make a fence it is not chemical change because it is still the same color but might not be the same shape. The wood burned changes the color of it to black. Chemical changes are when something smells, color, etc. If the shape is different, it is just physical change.
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