Physical or chemicals change

 

(Heating ZnO

Hypothesis- Explosion = Chemicals change 

Equipment- Sample of ZnO ( Zinc oxide)

• Heat source- Hot plate
• Scales
• Heatproof container-Evaporating
• Tongs Heatproof mat 

Method- 

1. Get a sample of ZnO in an evaporation dish
2. weight the ZnO on a hot plate.
3. Heat container + ZnO a hot plate.
4. Observe any changes - use the phone for before and after photos.
5. Take off heat + put on a heatproof mat.
6. Let cool- observe - photos
7. Re weight.

Results- 

Conclusion