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Faman39

  • 3 years ago

I have an exam before that i have to figure out old mistake, please help me A scientist is performing an experiment on a powder. Which of the following is a sign that a chemical change has definitely occurred during his experiment? The powder catches on fire. The powder releases bubbles. The powder heats up. The powder breaks apart into smaller particles.

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  1. Faman39
    • 3 years ago
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    @Frostbite can you able to help me?

  2. Faman39
    • 3 years ago
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    please help me guys :(

  3. Frostbite
    • 3 years ago
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    If I have to be honest. I don't know because it is a very bad question. If it stood to me it could be all of them.

  4. Faman39
    • 3 years ago
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    Its ok

  5. Faman39
    • 3 years ago
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    i am not getting anyone for helps in this group, thats y, i was confused and had to call you

  6. Frostbite
    • 3 years ago
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    1) strong exothermic 2) relase of a gas 3) exothermic 4) a break in the molecule. If you can follow my drift.

  7. Faman39
    • 3 years ago
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    third one ? i guess

  8. Frostbite
    • 3 years ago
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    could be all as you see.

  9. Faman39
    • 3 years ago
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    thank you so much coming for helping me out @Frostbite

  10. Frostbite
    • 3 years ago
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    Not much help unfortunately, but I hope you0 figure something out. :/

  11. Faman39
    • 3 years ago
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    i guess heat

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