Multiple choice

Which of the following happens when metals are treated with hydrogen?

  1. Metals do not react with hydrogen.

  2. Metal hydrides are formed with the evolution of heat.

  3. Metal hydrides are formed with the absorption of heat.

  4. Metal hydroxides are formed with the evolution of heat.

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When metals react with hydrogen, they form metal hydrides. This reaction is typically exothermic, meaning it releases heat.