Complete the following statements with appropriate answer(s) in the blank space(s): i. Whenever __________ occurs, we say that a chemical reaction has taken place. ii. Magnesium ribbon burns with a white dazzling light and changes into ________________. iii. Zinc metal reacts with hydrochloric acid to form zinc chloride with the liberation of __________ gas. iv. The reaction Cu + x HNO3 (conc.) -----------> Cu (NO3 )2 + y NO2 + z H2O The values of x, y and z are ____, ____, and ____.
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Answer:
1. burning
2. Magnesium Oxide
3. hydrogen
4.
Explanation:
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