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Tuesday, February 16, 2021

Physical or chemical change.

 (Heating ZnO)

Hypothesis - We could have an explosion - (Chemical change)

Equipment - ZnO - Heath source ( Hot plate ) Scales - Heat proof container ( Evapourating dish ) - Tongs - Heat proof mat.

Method - Get sample of ZnO in an evepourating dish, Welsh the ZnO + Centainer - Record weight, heat centainer & ZnO on hot plate, Observe any changes - Use phones for before and after photos ( or videos ) Take off the heat & put on heat proof mat, Let cool - ( observe and take photos ) Reweigh 

Result - What happened, (   In the end when you burn ZnO it turns Yellow.)

Conclusion- Explaination of the results, (  So it didnt explode but it turnt yellow when we first weighed the ZnO it was 51 Grams but after we bunrt it, It stayed the same : D over all this was our first experiment so I didn't expected but i can say that its a physical change   )




This was all that happened but I can say with proof that it was a physical change


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