Final answer:
In chemistry, magnesium reacts with sulfuric acid to produce magnesium sulfate and hydrogen gas, sodium burns in oxygen to form sodium oxide, calcium reacts with hydrogen to create calcium hydride, and an iron nail in copper sulfate solution undergoes a displacement reaction, yielding iron sulfate and copper.
Step-by-step explanation:
When discussing the reactions of different elements and compounds in chemistry, it's important to understand the outcomes of each reaction:
- Magnesium reacts with sulfuric acid to produce magnesium sulfate and hydrogen gas.
- Sodium burning in oxygen results in the formation of sodium oxide, a strong base.
- When calcium reacts with hydrogen, calcium hydride is formed.
- An iron nail kept in a copper sulfate solution undergoes a displacement reaction, resulting in iron sulfate and copper metal.
Each reaction is characterized by its own specific product and type of reaction, whether it be single displacement, combustion, or simple combination.