Question

can someone help, please ??

Chemistry


3. In a nuclear reaction, energy is released by the combination of two elements into a new element. This

process is an example of

A. artificial disintegration.

B. nuclear fission.

C. natural radioactivity.

D. nuclear fusion.


4. Which of the following is one way to prevent the corrosion of iron?

A. Protect the iron from polluted air.

B. Let the iron develop a natural coat of carbonate.

C. Paint exposed iron parts with protective paint.

D. Add carbon to the iron

Answer 1

Nuclear fusion because fusion neans joining

Painting the iron would block iron to react

Answer 2

In a nuclear reaction, energy is released by the combination of two elements into a new element. This process is an example of nuclear fusion. It is the reaction in which two or more atomic nuclei form one or more different atomic nuclei. 
Separating the base metal from the environment will prevent the metal from oxidizing. Chromium dioxide on the surface of the steel acts like paint and separates the base metal from the surrounding environment.
Solution C: Paint exposed iron parts with protective paint is one way to prevent the corrosion of iron?