Hypothesis: Chemical change
Equipment: Sample of ZnO (Zinc Oxide)
Heat source- Hot plate
Scales
Tongs
Heatproof container- Evaporating dish
Heatproof mat
Tongs
Heatproof container- Evaporating dish
Heatproof mat
Method-
1. Get a sample of ZnO in an evaporating dish
2. Weigh the ZnO & Container - Record Weight
3. Heat Container & ZnO on a hot plate
4. Observe any changes- use phones for before and after photos (video?)
5. Take off the heat and put on a heatproof mat
6. Let Cool - Observe - Photos
7. Re Weigh
2. Weigh the ZnO & Container - Record Weight
3. Heat Container & ZnO on a hot plate
4. Observe any changes- use phones for before and after photos (video?)
5. Take off the heat and put on a heatproof mat
6. Let Cool - Observe - Photos
7. Re Weigh
Results What happened?: it weighed 57 grams in the beginning and the weight didn't change.
Conclusion:When we heated the Zinc Oxide it smelt and and turned a little bit yellow, it was a physical change because it could easily reversed to its original state.
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