Signs of a chemical change
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| A solution of CuSO4. It is a liquid | The CuSO4 solution after the additon of NaOH. A solid formed in the solution. that solid is Cu(OH)2 |
| The formation of a solid in the solution forming Cu(OH)2 from CuSO4 indicates a chemical change occurred |
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| Note the light, heat and gas formation of a new substance all indicate a chemical change occurred |
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| A clear solution | Note the new gas formation, light, and energy release. All are signs of a chemical change | Note the clear solution turns pink. change of color is also a sign that a chemical change occurred | Note the deep pink color |
| Note the formation of a new gas, energy release, light and color change. all indicate that a chemical change happened. |
