Physical And Chemical Change

Hypothesis: I think this experiment is gonna show chemical changes. 

Equipment: 

• Sample of ZN 0 (Zinc Oxide)
• Heat Source - Hot Plate
• Scales
• Heat proof container - Evaporating dish 
• Tongs
• Heat proof mat

Method: 

1. Prepare one sample of ZN 0 in an evaporating dish. 
2. Weigh the ZN 0 and container - record weight.
3. Heat container and ZN 0 on hot plate.
4. Observe any changes - use phone for before and after photos 
5. Take of heat and put on heat proof mat.
6. Let cool - observe - photos
7. Re weigh

Results: Before we started the experiment we take the weight of the bowl and the weight of the Zinc. The bowl weigh is 5 grams while the Zinc weight is just 2 grams. We put the bowl with the powder in it on the heat to see the result. It takes time to see any changes that is happening. After some time we started to see that colour changing on the Zinc powder. It's starting to change the colour into yellow but the original colour is white. Basically that is the only changes that we saw in this experiment. 

                                                

Conclusion: My hypothesis is it's gonna be a chemical changes. After this experiment I saw that my hypothesis is wrong. As I said for the result, the whole experiment didn't gave us a lot of changes and it's just a colour. So this experiment is shows physical changes.