PDF chapter test TRY NOW
A science teacher performs an experiment using two elements.
- Element A is burned in oxygen and the gas produced is dissolved in water to form Solution X.
- Element B is burned in oxygen and the gas produced is dissolved in water to form Solution Y.
After testing with litmus paper, the following observations are recorded:
| Solution | Observation |
| X | Blue litmus turns red |
| Y | Red litmus turns blue |
Study the information attentively and answer the following questions:
1. Which of the following could be Element A? - .
2. Why was water added after the oxide was formed? - .
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