Chemistry Lab Report
1. Prepare all materials needed for an experiment.
2. First, measure the mass of the crucible and its lid with an electronic scale.
3. Put about a half spoonful of zinc powder using a spatula inside the crucible.
4. Reweigh the crucible that contains zinc powder, and its lid with an electronic scale.
5. Then, place a pipe clay triangle on top of a tripod stand and place a crucible on a pipe clay triangle.
6. Set a tripod stand on the heatproof mat and start to heat the crucible with a burner.
7. During heating, open and close the lid of crucible regularly using a tongs to allow more air to enter.
8. The zinc will start to change its black color to yellow when it starts to burn. When the zinc powder looks burned, measure the crucible and
its lid again to see the mass change.
9. Reweigh the crucible and its lid until the mass of zinc reaches the constant mass.
10. When zinc reaches its constant mass, finish the experiment and do several trials to improve the accuracy of data.
2. First, measure the mass of the crucible and its lid with an electronic scale.
3. Put about a half spoonful of zinc powder using a spatula inside the crucible.
4. Reweigh the crucible that contains zinc powder, and its lid with an electronic scale.
5. Then, place a pipe clay triangle on top of a tripod stand and place a crucible on a pipe clay triangle.
6. Set a tripod stand on the heatproof mat and start to heat the crucible with a burner.
7. During heating, open and close the lid of crucible regularly using a tongs to allow more air to enter.
8. The zinc will start to change its black color to yellow when it starts to burn. When the zinc powder looks burned, measure the crucible and
its lid again to see the mass change.
9. Reweigh the crucible and its lid until the mass of zinc reaches the constant mass.
10. When zinc reaches its constant mass, finish the experiment and do several trials to improve the accuracy of data.