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Exercises
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Label the following reactions as PHYSICAL or CHEMICAL:
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PHYSICAL or CHEMICAL? WHY?
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PHYSICAL or CHEMICAL? WHY?
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PHYSICAL or CHEMICAL? WHY?
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When vinegar and baking powder are mixed a fizzy solution is created. Is this a chemical reaction? Explain Click to see a 120kb video. |
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| Click to see a 120kb video of a light globe filament glowing when supplied with microwave energy. Is this a chemical reaction or physical change? Explain. | |
| Click to see a 120kb movie of the mixing of two clear solutions. Is this a chemical reaction or a physical change? Explain | |
| Click to see a 120kb movie of solid carbon dioxide(dry ice) as it turns directly into the gas phase(sublimes). Is this a chemical reaction or physical change? Explain. | |
